<?xml version="1.0" encoding="us-ascii"?>
<!-- Created by Merrill Corporation -->
<!--Generated by IRIS XBRL Generation Engine-->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureSubsequentEventsDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureSubsequentEventsDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureCommitmentsAndContingenciesTables" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureCommitmentsAndContingenciesTables" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureLoansReceivableDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureLoansReceivableDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureSelectedQuarterlyFinancialDataDetails3" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureSelectedQuarterlyFinancialDataDetails3" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureRealEstatePropertyInvestmentsDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureRealEstatePropertyInvestmentsDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureVariableInterestEntitiesDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureVariableInterestEntitiesDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureInvestmentsInAndAdvancesToUnconsolidatedJointVenturesDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureInvestmentsInAndAdvancesToUnconsolidatedJointVenturesDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureCommitmentsAndContingenciesDetails5" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureCommitmentsAndContingenciesDetails5" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureCommitmentsAndContingenciesDetails3" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureCommitmentsAndContingenciesDetails3" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureMergersAndAcquisitionDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureMergersAndAcquisitionDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureCompensationPlansDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureCompensationPlansDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureCompensationPlansDetails2" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureCompensationPlansDetails2" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureRealEstatePropertyInvestmentsDetails2" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureRealEstatePropertyInvestmentsDetails2" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureEquityDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureEquityDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureNetInvestmentInDirectFinancingLeasesDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureNetInvestmentInDirectFinancingLeasesDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureDebtDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureDebtDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureInvestmentsInAndAdvancesToUnconsolidatedJointVenturesDetails2" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureInvestmentsInAndAdvancesToUnconsolidatedJointVenturesDetails2" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureMergersAndAcquisitionTables" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureMergersAndAcquisitionTables" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureSelectedQuarterlyFinancialDataDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureSelectedQuarterlyFinancialDataDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureSelectedQuarterlyFinancialDataDetails2" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureSelectedQuarterlyFinancialDataDetails2" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureTransactionsWithRelatedPartiesDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureTransactionsWithRelatedPartiesDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureSegmentDisclosuresDetails3" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureSegmentDisclosuresDetails3" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureIncomeTaxesDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureIncomeTaxesDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureDispositionsOfRealEstateAndDiscontinuedOperationsDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureDispositionsOfRealEstateAndDiscontinuedOperationsDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureCommitmentsAndContingenciesDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureCommitmentsAndContingenciesDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureImpairmentsDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureImpairmentsDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureOtherAssetsDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureOtherAssetsDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureDebtTables" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureDebtTables" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureDerivativeFinancialInstrumentsDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureDerivativeFinancialInstrumentsDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureFairValueMeasurementsDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureFairValueMeasurementsDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureDisclosuresAboutFairValueOfFinancialInstrumentsDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureDisclosuresAboutFairValueOfFinancialInstrumentsDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureSegmentDisclosuresDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureSegmentDisclosuresDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureLoansReceivableDetails3" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureLoansReceivableDetails3" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureCommitmentsAndContingenciesDetails2" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureCommitmentsAndContingenciesDetails2" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureEarningsPerCommonShareDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureEarningsPerCommonShareDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureValuationAndQualifyingAccountsDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureValuationAndQualifyingAccountsDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureRealEstateAndAccumulatedDepreciationDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureRealEstateAndAccumulatedDepreciationDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureNetInvestmentInDirectFinancingLeasesTables" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureNetInvestmentInDirectFinancingLeasesTables" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureLoansReceivableTables" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureLoansReceivableTables" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureRealEstatePropertyInvestmentsTables" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureRealEstatePropertyInvestmentsTables" />
  <link:roleRef roleURI="http://www.hcpi.com/role/DisclosureIntangiblesDetails" xlink:type="simple" xlink:href="hcp-20140630.xsd#DisclosureIntangiblesDetails" />
  <link:roleRef roleURI="http://www.hcpi.com/role/StatementOfStockholdersEquity" xlink:type="simple" xlink:href="hcp-20140630.xsd#StatementOfStockholdersEquity" />
  <link:roleRef roleURI="http://www.hcpi.com/role/BalanceSheetParenthetical" xlink:type="simple" xlink:href="hcp-20140630.xsd#BalanceSheetParenthetical" />
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureSubsequentEventsDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="loc_us-gaap_SubsequentEventLineItems" xlink:title="SubsequentEventLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventTable" xlink:label="loc_us-gaap_SubsequentEventTable" xlink:title="SubsequentEventTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems" xlink:to="loc_us-gaap_SubsequentEventTable" xlink:title="Definition : loc_us-gaap_SubsequentEventLineItems to loc_us-gaap_SubsequentEventTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis" xlink:title="LegalEntityAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain" xlink:title="EntityDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis" xlink:to="loc_dei_EntityDomain" xlink:title="Definition : loc_dei_LegalEntityAxis to loc_dei_EntityDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CounterpartyNameAxis" xlink:label="loc_us-gaap_CounterpartyNameAxis" xlink:title="CounterpartyNameAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:title="RepurchaseAgreementCounterpartyNameDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CounterpartyNameAxis" xlink:to="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:title="Definition : loc_us-gaap_CounterpartyNameAxis to loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TypeOfArrangementAxis" xlink:label="loc_us-gaap_TypeOfArrangementAxis" xlink:title="TypeOfArrangementAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:title="ArrangementsAndNonarrangementTransactionsMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:title="Definition : loc_us-gaap_TypeOfArrangementAxis to loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CCRCJVMember" xlink:label="loc_hcp_CCRCJVMember" xlink:title="CCRCJVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain" xlink:to="loc_hcp_CCRCJVMember" xlink:title="Definition : loc_dei_EntityDomain to loc_hcp_CCRCJVMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EmeritusMember" xlink:label="loc_hcp_EmeritusMember" xlink:title="EmeritusMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:to="loc_hcp_EmeritusMember" xlink:title="Definition : loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain to loc_hcp_EmeritusMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RIDEAJVMember" xlink:label="loc_hcp_RIDEAJVMember" xlink:title="RIDEAJVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:to="loc_hcp_RIDEAJVMember" xlink:title="Definition : loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember to loc_hcp_RIDEAJVMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="loc_us-gaap_SubsequentEventTypeAxis" xlink:title="SubsequentEventTypeAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable" xlink:to="loc_us-gaap_SubsequentEventTypeAxis" xlink:title="Definition : loc_us-gaap_SubsequentEventTable to loc_us-gaap_SubsequentEventTypeAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:label="ArrangementsAndNonarrangementTransactionsMember_1" xlink:title="ArrangementsAndNonarrangementTransactionsMember_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis" xlink:to="ArrangementsAndNonarrangementTransactionsMember_1" xlink:title="Definition : loc_us-gaap_TypeOfArrangementAxis to loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BrookdaleMember" xlink:label="loc_hcp_BrookdaleMember" xlink:title="BrookdaleMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:to="loc_hcp_BrookdaleMember" xlink:title="Definition : loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain to loc_hcp_BrookdaleMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfFacilitiesAcquiredForWhichExistingLeaseAgreementIsAmended" xlink:label="loc_hcp_NumberOfFacilitiesAcquiredForWhichExistingLeaseAgreementIsAmended" xlink:title="NumberOfFacilitiesAcquiredForWhichExistingLeaseAgreementIsAmended" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems" xlink:to="loc_hcp_NumberOfFacilitiesAcquiredForWhichExistingLeaseAgreementIsAmended" xlink:title="Definition : loc_us-gaap_SubsequentEventLineItems to loc_hcp_NumberOfFacilitiesAcquiredForWhichExistingLeaseAgreementIsAmended" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable" xlink:to="loc_dei_LegalEntityAxis" xlink:title="Definition : loc_us-gaap_SubsequentEventTable to loc_dei_LegalEntityAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfPropertiesWithCancelledPurchaseOptionsForWhichExistingLeaseAgreementIsAmended" xlink:label="loc_hcp_NumberOfPropertiesWithCancelledPurchaseOptionsForWhichExistingLeaseAgreementIsAmended" xlink:title="NumberOfPropertiesWithCancelledPurchaseOptionsForWhichExistingLeaseAgreementIsAmended" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems" xlink:to="loc_hcp_NumberOfPropertiesWithCancelledPurchaseOptionsForWhichExistingLeaseAgreementIsAmended" xlink:title="Definition : loc_us-gaap_SubsequentEventLineItems to loc_hcp_NumberOfPropertiesWithCancelledPurchaseOptionsForWhichExistingLeaseAgreementIsAmended" xlink:type="arc" use="optional" order="3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable" xlink:to="loc_us-gaap_CounterpartyNameAxis" xlink:title="Definition : loc_us-gaap_SubsequentEventTable to loc_us-gaap_CounterpartyNameAxis" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfFacilitiesAcquiredForWhichExistingLeaseAgreementIsTerminated" xlink:label="loc_hcp_NumberOfFacilitiesAcquiredForWhichExistingLeaseAgreementIsTerminated" xlink:title="NumberOfFacilitiesAcquiredForWhichExistingLeaseAgreementIsTerminated" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems" xlink:to="loc_hcp_NumberOfFacilitiesAcquiredForWhichExistingLeaseAgreementIsTerminated" xlink:title="Definition : loc_us-gaap_SubsequentEventLineItems to loc_hcp_NumberOfFacilitiesAcquiredForWhichExistingLeaseAgreementIsTerminated" xlink:type="arc" use="optional" order="4" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable" xlink:to="loc_us-gaap_TypeOfArrangementAxis" xlink:title="Definition : loc_us-gaap_SubsequentEventTable to loc_us-gaap_TypeOfArrangementAxis" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfPropertiesWithCancelledPurchaseOptionsForWhichExistingLeaseAgreementIsTerminated" xlink:label="loc_hcp_NumberOfPropertiesWithCancelledPurchaseOptionsForWhichExistingLeaseAgreementIsTerminated" xlink:title="NumberOfPropertiesWithCancelledPurchaseOptionsForWhichExistingLeaseAgreementIsTerminated" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems" xlink:to="loc_hcp_NumberOfPropertiesWithCancelledPurchaseOptionsForWhichExistingLeaseAgreementIsTerminated" xlink:title="Definition : loc_us-gaap_SubsequentEventLineItems to loc_hcp_NumberOfPropertiesWithCancelledPurchaseOptionsForWhichExistingLeaseAgreementIsTerminated" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NumberOfRealEstateProperties" xlink:label="loc_us-gaap_NumberOfRealEstateProperties" xlink:title="NumberOfRealEstateProperties" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems" xlink:to="loc_us-gaap_NumberOfRealEstateProperties" xlink:title="Definition : loc_us-gaap_SubsequentEventLineItems to loc_us-gaap_NumberOfRealEstateProperties" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_JointVentureOwnershipPercentage" xlink:label="loc_hcp_JointVentureOwnershipPercentage" xlink:title="JointVentureOwnershipPercentage" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems" xlink:to="loc_hcp_JointVentureOwnershipPercentage" xlink:title="Definition : loc_us-gaap_SubsequentEventLineItems to loc_hcp_JointVentureOwnershipPercentage" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfRetirementCommunities" xlink:label="loc_hcp_NumberOfRetirementCommunities" xlink:title="NumberOfRetirementCommunities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems" xlink:to="loc_hcp_NumberOfRetirementCommunities" xlink:title="Definition : loc_us-gaap_SubsequentEventLineItems to loc_hcp_NumberOfRetirementCommunities" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_JointVentureInvestments" xlink:label="loc_hcp_JointVentureInvestments" xlink:title="JointVentureInvestments" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems" xlink:to="loc_hcp_JointVentureInvestments" xlink:title="Definition : loc_us-gaap_SubsequentEventLineItems to loc_hcp_JointVentureInvestments" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="loc_us-gaap_SubsequentEventTypeDomain" xlink:title="SubsequentEventTypeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis" xlink:to="loc_us-gaap_SubsequentEventTypeDomain" xlink:title="Definition : loc_us-gaap_SubsequentEventTypeAxis to loc_us-gaap_SubsequentEventTypeDomain" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="loc_us-gaap_SubsequentEventMember" xlink:title="SubsequentEventMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain" xlink:to="loc_us-gaap_SubsequentEventMember" xlink:title="Definition : loc_us-gaap_SubsequentEventTypeDomain to loc_us-gaap_SubsequentEventMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NNNLeasedPortfolioMember" xlink:label="loc_hcp_NNNLeasedPortfolioMember" xlink:title="NNNLeasedPortfolioMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:to="loc_hcp_NNNLeasedPortfolioMember" xlink:title="Definition : loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember to loc_hcp_NNNLeasedPortfolioMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfPropertiesWithCancelledPurchaseOptions" xlink:label="loc_hcp_NumberOfPropertiesWithCancelledPurchaseOptions" xlink:title="NumberOfPropertiesWithCancelledPurchaseOptions" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems" xlink:to="loc_hcp_NumberOfPropertiesWithCancelledPurchaseOptions" xlink:title="Definition : loc_us-gaap_SubsequentEventLineItems to loc_hcp_NumberOfPropertiesWithCancelledPurchaseOptions" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="SubsequentEventTypeDomain_2" xlink:title="SubsequentEventTypeDomain_2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis" xlink:to="SubsequentEventTypeDomain_2" xlink:title="Definition : loc_us-gaap_SubsequentEventTypeAxis to loc_us-gaap_SubsequentEventTypeDomain" xlink:type="arc" use="optional" order="8001" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureCommitmentsAndContingenciesTables">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskLineItems" xlink:label="loc_us-gaap_ConcentrationRiskLineItems" xlink:title="ConcentrationRiskLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskTable" xlink:label="loc_us-gaap_ConcentrationRiskTable" xlink:title="ConcentrationRiskTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_us-gaap_ConcentrationRiskTable" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_us-gaap_ConcentrationRiskTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis" xlink:title="ConcentrationRiskByTypeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain" xlink:title="ConcentrationRiskTypeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain" xlink:title="Definition : loc_us-gaap_ConcentrationRiskByTypeAxis to loc_us-gaap_ConcentrationRiskTypeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingMember" xlink:label="loc_hcp_SeniorHousingMember" xlink:title="SeniorHousingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OperatorsMember" xlink:label="loc_hcp_OperatorsMember" xlink:title="OperatorsMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain" xlink:to="loc_hcp_OperatorsMember" xlink:title="Definition : loc_us-gaap_ConcentrationRiskTypeDomain to loc_hcp_OperatorsMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_us-gaap_ConcentrationRiskTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PostAcuteAndSkilledNursingMember" xlink:label="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="PostAcuteAndSkilledNursingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_PostAcuteAndSkilledNursingMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock" xlink:label="loc_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock" xlink:title="SchedulesOfConcentrationOfRiskByRiskFactorTextBlock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis" xlink:title="Definition : loc_us-gaap_ConcentrationRiskTable to loc_us-gaap_ConcentrationRiskByTypeAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ScheduleOfCondensedFinancialStatementsByOperatorsTableTextBlock" xlink:label="loc_hcp_ScheduleOfCondensedFinancialStatementsByOperatorsTableTextBlock" xlink:title="ScheduleOfCondensedFinancialStatementsByOperatorsTableTextBlock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_ScheduleOfCondensedFinancialStatementsByOperatorsTableTextBlock" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_ScheduleOfCondensedFinancialStatementsByOperatorsTableTextBlock" xlink:type="arc" use="optional" order="3" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureLoansReceivableDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:title="AccountsNotesAndLoansReceivableLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:title="ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:title="AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReceivableTypeDomain" xlink:label="loc_us-gaap_ReceivableTypeDomain" xlink:title="ReceivableTypeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:to="loc_us-gaap_ReceivableTypeDomain" xlink:title="Definition : loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis to loc_us-gaap_ReceivableTypeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis" xlink:title="RangeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember" xlink:title="RangeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis" xlink:to="loc_us-gaap_RangeMember" xlink:title="Definition : loc_us-gaap_RangeAxis to loc_us-gaap_RangeMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InternalCreditAssessmentAxis" xlink:label="loc_us-gaap_InternalCreditAssessmentAxis" xlink:title="InternalCreditAssessmentAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InternalCreditAssessmentDomain" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain" xlink:title="InternalCreditAssessmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain" xlink:title="Definition : loc_us-gaap_InternalCreditAssessmentAxis to loc_us-gaap_InternalCreditAssessmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageReceivablesMember" xlink:label="loc_us-gaap_MortgageReceivablesMember" xlink:title="MortgageReceivablesMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain" xlink:to="loc_us-gaap_MortgageReceivablesMember" xlink:title="Definition : loc_us-gaap_ReceivableTypeDomain to loc_us-gaap_MortgageReceivablesMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_TandemHealthCareLoanMember" xlink:label="loc_hcp_TandemHealthCareLoanMember" xlink:title="TandemHealthCareLoanMember" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_TandemHealthCareLoanFirstTrancheMember" xlink:label="loc_hcp_TandemHealthCareLoanFirstTrancheMember" xlink:title="TandemHealthCareLoanFirstTrancheMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_TandemHealthCareLoanMember" xlink:to="loc_hcp_TandemHealthCareLoanFirstTrancheMember" xlink:title="Definition : loc_hcp_TandemHealthCareLoanMember to loc_hcp_TandemHealthCareLoanFirstTrancheMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember" xlink:title="MaximumMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember" xlink:to="loc_us-gaap_MaximumMember" xlink:title="Definition : loc_us-gaap_RangeMember to loc_us-gaap_MaximumMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PerformingFinancingReceivableMember" xlink:label="loc_us-gaap_PerformingFinancingReceivableMember" xlink:title="PerformingFinancingReceivableMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain" xlink:to="loc_us-gaap_PerformingFinancingReceivableMember" xlink:title="Definition : loc_us-gaap_InternalCreditAssessmentDomain to loc_us-gaap_PerformingFinancingReceivableMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OtherLoansReceivableSecuredMember" xlink:label="loc_hcp_OtherLoansReceivableSecuredMember" xlink:title="OtherLoansReceivableSecuredMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_OtherLoansReceivableSecuredMember" xlink:to="loc_hcp_TandemHealthCareLoanMember" xlink:title="Definition : loc_hcp_OtherLoansReceivableSecuredMember to loc_hcp_TandemHealthCareLoanMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable to loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReceivableTypeDomain" xlink:label="ReceivableTypeDomain_1" xlink:title="ReceivableTypeDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:to="ReceivableTypeDomain_1" xlink:title="Definition : loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis to loc_us-gaap_ReceivableTypeDomain" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain" xlink:to="loc_hcp_OtherLoansReceivableSecuredMember" xlink:title="Definition : loc_us-gaap_ReceivableTypeDomain to loc_hcp_OtherLoansReceivableSecuredMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_TandemHealthCareLoanSecondTrancheMember" xlink:label="loc_hcp_TandemHealthCareLoanSecondTrancheMember" xlink:title="TandemHealthCareLoanSecondTrancheMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_TandemHealthCareLoanMember" xlink:to="loc_hcp_TandemHealthCareLoanSecondTrancheMember" xlink:title="Definition : loc_hcp_TandemHealthCareLoanMember to loc_hcp_TandemHealthCareLoanSecondTrancheMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_WorkoutFinancingReceivableMember" xlink:label="loc_hcp_WorkoutFinancingReceivableMember" xlink:title="WorkoutFinancingReceivableMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain" xlink:to="loc_hcp_WorkoutFinancingReceivableMember" xlink:title="Definition : loc_us-gaap_InternalCreditAssessmentDomain to loc_hcp_WorkoutFinancingReceivableMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LoansReceivableGrossCarryingAmountMezzanine" xlink:label="loc_hcp_LoansReceivableGrossCarryingAmountMezzanine" xlink:title="LoansReceivableGrossCarryingAmountMezzanine" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_LoansReceivableGrossCarryingAmountMezzanine" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_LoansReceivableGrossCarryingAmountMezzanine" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DelphisOperationsLPSeniorSecuredTermLoanMember" xlink:label="loc_hcp_DelphisOperationsLPSeniorSecuredTermLoanMember" xlink:title="DelphisOperationsLPSeniorSecuredTermLoanMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_OtherLoansReceivableSecuredMember" xlink:to="loc_hcp_DelphisOperationsLPSeniorSecuredTermLoanMember" xlink:title="Definition : loc_hcp_OtherLoansReceivableSecuredMember to loc_hcp_DelphisOperationsLPSeniorSecuredTermLoanMember" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:to="loc_us-gaap_RangeAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable to loc_us-gaap_RangeAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LoansAndLeasesReceivableGrossCarryingAmountOther" xlink:label="loc_us-gaap_LoansAndLeasesReceivableGrossCarryingAmountOther" xlink:title="LoansAndLeasesReceivableGrossCarryingAmountOther" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_LoansAndLeasesReceivableGrossCarryingAmountOther" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_LoansAndLeasesReceivableGrossCarryingAmountOther" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BarchesterLoanMember" xlink:label="loc_hcp_BarchesterLoanMember" xlink:title="BarchesterLoanMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_OtherLoansReceivableSecuredMember" xlink:to="loc_hcp_BarchesterLoanMember" xlink:title="Definition : loc_hcp_OtherLoansReceivableSecuredMember to loc_hcp_BarchesterLoanMember" xlink:type="arc" use="optional" order="3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:to="loc_us-gaap_InternalCreditAssessmentAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable to loc_us-gaap_InternalCreditAssessmentAxis" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums" xlink:label="loc_us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums" xlink:title="UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LoansAndLeasesReceivableAllowance" xlink:label="loc_us-gaap_LoansAndLeasesReceivableAllowance" xlink:title="LoansAndLeasesReceivableAllowance" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_LoansAndLeasesReceivableAllowance" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_LoansAndLeasesReceivableAllowance" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:label="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:title="LoansAndLeasesReceivableNetReportedAmount" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LoansReceivableCommercialConstruction" xlink:label="loc_us-gaap_LoansReceivableCommercialConstruction" xlink:title="LoansReceivableCommercialConstruction" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_LoansReceivableCommercialConstruction" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_LoansReceivableCommercialConstruction" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LoansAndLeasesReceivableCommitmentsFixedRates" xlink:label="loc_us-gaap_LoansAndLeasesReceivableCommitmentsFixedRates" xlink:title="LoansAndLeasesReceivableCommitmentsFixedRates" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_LoansAndLeasesReceivableCommitmentsFixedRates" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_LoansAndLeasesReceivableCommitmentsFixedRates" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LoansAndLeasesReceivableAsPercentage" xlink:label="loc_hcp_LoansAndLeasesReceivableAsPercentage" xlink:title="LoansAndLeasesReceivableAsPercentage" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_LoansAndLeasesReceivableAsPercentage" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_LoansAndLeasesReceivableAsPercentage" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LoanReceivablePurchasedFaceOrParValue" xlink:label="loc_hcp_LoanReceivablePurchasedFaceOrParValue" xlink:title="LoanReceivablePurchasedFaceOrParValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_LoanReceivablePurchasedFaceOrParValue" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_LoanReceivablePurchasedFaceOrParValue" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LoanReceivablePurchasedDiscount" xlink:label="loc_hcp_LoanReceivablePurchasedDiscount" xlink:title="LoanReceivablePurchasedDiscount" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_LoanReceivablePurchasedDiscount" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_LoanReceivablePurchasedDiscount" xlink:type="arc" use="optional" order="11" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfFacilities" xlink:label="loc_hcp_NumberOfFacilities" xlink:title="NumberOfFacilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_NumberOfFacilities" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_NumberOfFacilities" xlink:type="arc" use="optional" order="12" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LoanReceivablePurchasedAcquisitionCost" xlink:label="loc_hcp_LoanReceivablePurchasedAcquisitionCost" xlink:title="LoanReceivablePurchasedAcquisitionCost" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_LoanReceivablePurchasedAcquisitionCost" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_LoanReceivablePurchasedAcquisitionCost" xlink:type="arc" use="optional" order="13" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentDescriptionOfVariableRateBasis" xlink:label="loc_us-gaap_DebtInstrumentDescriptionOfVariableRateBasis" xlink:title="DebtInstrumentDescriptionOfVariableRateBasis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_DebtInstrumentDescriptionOfVariableRateBasis" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_DebtInstrumentDescriptionOfVariableRateBasis" xlink:type="arc" use="optional" order="14" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:title="DebtInstrumentBasisSpreadOnVariableRate1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:type="arc" use="optional" order="15" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromCollectionOfLoansReceivable" xlink:label="loc_us-gaap_ProceedsFromCollectionOfLoansReceivable" xlink:title="ProceedsFromCollectionOfLoansReceivable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_ProceedsFromCollectionOfLoansReceivable" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_ProceedsFromCollectionOfLoansReceivable" xlink:type="arc" use="optional" order="16" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestAndFeeIncomeLoansAndLeases" xlink:label="loc_us-gaap_InterestAndFeeIncomeLoansAndLeases" xlink:title="InterestAndFeeIncomeLoansAndLeases" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_InterestAndFeeIncomeLoansAndLeases" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_InterestAndFeeIncomeLoansAndLeases" xlink:type="arc" use="optional" order="17" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LoanReceivableSubordinatedToSeniorMortgageDebt" xlink:label="loc_hcp_LoanReceivableSubordinatedToSeniorMortgageDebt" xlink:title="LoanReceivableSubordinatedToSeniorMortgageDebt" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_LoanReceivableSubordinatedToSeniorMortgageDebt" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_LoanReceivableSubordinatedToSeniorMortgageDebt" xlink:type="arc" use="optional" order="18" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetReportedAmountOther" xlink:label="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmountOther" xlink:title="LoansAndLeasesReceivableNetReportedAmountOther" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmountOther" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_LoansAndLeasesReceivableNetReportedAmountOther" xlink:type="arc" use="optional" order="19" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LoanReceivableInterestRatePayable" xlink:label="loc_hcp_LoanReceivableInterestRatePayable" xlink:title="LoanReceivableInterestRatePayable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_LoanReceivableInterestRatePayable" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_LoanReceivableInterestRatePayable" xlink:type="arc" use="optional" order="20" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LoanReceivableMaturityTerm" xlink:label="loc_hcp_LoanReceivableMaturityTerm" xlink:title="LoanReceivableMaturityTerm" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_LoanReceivableMaturityTerm" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_LoanReceivableMaturityTerm" xlink:type="arc" use="optional" order="21" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AllowanceForLoanAndLeaseLossesRollForward" xlink:label="loc_us-gaap_AllowanceForLoanAndLeaseLossesRollForward" xlink:title="AllowanceForLoanAndLeaseLossesRollForward" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_AllowanceForLoanAndLeaseLossesRollForward" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_AllowanceForLoanAndLeaseLossesRollForward" xlink:type="arc" use="optional" order="22" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProvisionForLoanAndLeaseLosses" xlink:label="loc_us-gaap_ProvisionForLoanAndLeaseLosses" xlink:title="ProvisionForLoanAndLeaseLosses" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AllowanceForLoanAndLeaseLossesRollForward" xlink:to="loc_us-gaap_ProvisionForLoanAndLeaseLosses" xlink:title="Definition : loc_us-gaap_AllowanceForLoanAndLeaseLossesRollForward to loc_us-gaap_ProvisionForLoanAndLeaseLosses" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCRManorCareIncMember" xlink:label="loc_hcp_HCRManorCareIncMember" xlink:title="HCRManorCareIncMember" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCRManorCareMezzanineLoanMember" xlink:label="loc_hcp_HCRManorCareMezzanineLoanMember" xlink:title="HCRManorCareMezzanineLoanMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_HCRManorCareIncMember" xlink:to="loc_hcp_HCRManorCareMezzanineLoanMember" xlink:title="Definition : loc_hcp_HCRManorCareIncMember to loc_hcp_HCRManorCareMezzanineLoanMember" xlink:type="arc" use="optional" order="8000" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain" xlink:to="loc_hcp_HCRManorCareIncMember" xlink:title="Definition : loc_us-gaap_ReceivableTypeDomain to loc_hcp_HCRManorCareIncMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_GenesisHealthCareLoansMember" xlink:label="loc_hcp_GenesisHealthCareLoansMember" xlink:title="GenesisHealthCareLoansMember" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_GenesisSeniorLoansMember" xlink:label="loc_hcp_GenesisSeniorLoansMember" xlink:title="GenesisSeniorLoansMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_GenesisHealthCareLoansMember" xlink:to="loc_hcp_GenesisSeniorLoansMember" xlink:title="Definition : loc_hcp_GenesisHealthCareLoansMember to loc_hcp_GenesisSeniorLoansMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember" xlink:title="MinimumMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember" xlink:to="loc_us-gaap_MinimumMember" xlink:title="Definition : loc_us-gaap_RangeMember to loc_us-gaap_MinimumMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_AccruedInterestReceivableOnLoansAndLeases" xlink:label="loc_hcp_AccruedInterestReceivableOnLoansAndLeases" xlink:title="AccruedInterestReceivableOnLoansAndLeases" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_AccruedInterestReceivableOnLoansAndLeases" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_AccruedInterestReceivableOnLoansAndLeases" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCRManorCareParticipationInFirstMortgageDebtMember" xlink:label="loc_hcp_HCRManorCareParticipationInFirstMortgageDebtMember" xlink:title="HCRManorCareParticipationInFirstMortgageDebtMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_HCRManorCareIncMember" xlink:to="loc_hcp_HCRManorCareParticipationInFirstMortgageDebtMember" xlink:title="Definition : loc_hcp_HCRManorCareIncMember to loc_hcp_HCRManorCareParticipationInFirstMortgageDebtMember" xlink:type="arc" use="optional" order="8001" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain" xlink:to="loc_hcp_GenesisHealthCareLoansMember" xlink:title="Definition : loc_us-gaap_ReceivableTypeDomain to loc_hcp_GenesisHealthCareLoansMember" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_GenesisMezzanineParticipationLoanMember" xlink:label="loc_hcp_GenesisMezzanineParticipationLoanMember" xlink:title="GenesisMezzanineParticipationLoanMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_GenesisHealthCareLoansMember" xlink:to="loc_hcp_GenesisMezzanineParticipationLoanMember" xlink:title="Definition : loc_hcp_GenesisHealthCareLoansMember to loc_hcp_GenesisMezzanineParticipationLoanMember" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_AcquiredLoansReceivableSettled" xlink:label="loc_hcp_AcquiredLoansReceivableSettled" xlink:title="AcquiredLoansReceivableSettled" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_AcquiredLoansReceivableSettled" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_AcquiredLoansReceivableSettled" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentFloorOnVariableRate" xlink:label="loc_hcp_DebtInstrumentFloorOnVariableRate" xlink:title="DebtInstrumentFloorOnVariableRate" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_DebtInstrumentFloorOnVariableRate" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_DebtInstrumentFloorOnVariableRate" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LoanReceivableTerminationFee" xlink:label="loc_hcp_LoanReceivableTerminationFee" xlink:title="LoanReceivableTerminationFee" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_LoanReceivableTerminationFee" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_LoanReceivableTerminationFee" xlink:type="arc" use="optional" order="8003" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LoanReceivableSubordinatedToSeniorMezzanineDebt" xlink:label="loc_hcp_LoanReceivableSubordinatedToSeniorMezzanineDebt" xlink:title="LoanReceivableSubordinatedToSeniorMezzanineDebt" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_LoanReceivableSubordinatedToSeniorMezzanineDebt" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_LoanReceivableSubordinatedToSeniorMezzanineDebt" xlink:type="arc" use="optional" order="8004" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DistributionToGuarantor" xlink:label="loc_hcp_DistributionToGuarantor" xlink:title="DistributionToGuarantor" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_DistributionToGuarantor" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_DistributionToGuarantor" xlink:type="arc" use="optional" order="8005" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LoanReceivableProceedsSettlement" xlink:label="loc_hcp_LoanReceivableProceedsSettlement" xlink:title="LoanReceivableProceedsSettlement" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_LoanReceivableProceedsSettlement" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_LoanReceivableProceedsSettlement" xlink:type="arc" use="optional" order="8006" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LegalFees" xlink:label="loc_us-gaap_LegalFees" xlink:title="LegalFees" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_LegalFees" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_LegalFees" xlink:type="arc" use="optional" order="8007" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LoanReceivableProceedsSettlementOther" xlink:label="loc_hcp_LoanReceivableProceedsSettlementOther" xlink:title="LoanReceivableProceedsSettlementOther" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_LoanReceivableProceedsSettlementOther" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_LoanReceivableProceedsSettlementOther" xlink:type="arc" use="optional" order="8008" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ProceedsFromGuarantor" xlink:label="loc_hcp_ProceedsFromGuarantor" xlink:title="ProceedsFromGuarantor" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_ProceedsFromGuarantor" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_ProceedsFromGuarantor" xlink:type="arc" use="optional" order="8009" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ProceedsFromSaleOfCollateralAssets" xlink:label="loc_hcp_ProceedsFromSaleOfCollateralAssets" xlink:title="ProceedsFromSaleOfCollateralAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_ProceedsFromSaleOfCollateralAssets" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_ProceedsFromSaleOfCollateralAssets" xlink:type="arc" use="optional" order="8010" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfPrimaryCollateralAssetsSold" xlink:label="loc_hcp_NumberOfPrimaryCollateralAssetsSold" xlink:title="NumberOfPrimaryCollateralAssetsSold" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_NumberOfPrimaryCollateralAssetsSold" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_NumberOfPrimaryCollateralAssetsSold" xlink:type="arc" use="optional" order="8011" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureSelectedQuarterlyFinancialDataDetails3">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems" xlink:title="RestructuringCostAndReserveLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:title="ScheduleOfRestructuringAndRelatedCostsTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:title="Definition : loc_us-gaap_RestructuringCostAndReserveLineItems to loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TitleOfIndividualAxis" xlink:label="loc_us-gaap_TitleOfIndividualAxis" xlink:title="TitleOfIndividualAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:title="TitleOfIndividualWithRelationshipToEntityDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TitleOfIndividualAxis" xlink:to="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:title="Definition : loc_us-gaap_TitleOfIndividualAxis to loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ChiefExecutiveOfficerMember" xlink:label="loc_us-gaap_ChiefExecutiveOfficerMember" xlink:title="ChiefExecutiveOfficerMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:to="loc_us-gaap_ChiefExecutiveOfficerMember" xlink:title="Definition : loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain to loc_us-gaap_ChiefExecutiveOfficerMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:to="loc_us-gaap_TitleOfIndividualAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable to loc_us-gaap_TitleOfIndividualAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SeveranceCosts1" xlink:label="loc_us-gaap_SeveranceCosts1" xlink:title="SeveranceCosts1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems" xlink:to="loc_us-gaap_SeveranceCosts1" xlink:title="Definition : loc_us-gaap_RestructuringCostAndReserveLineItems to loc_us-gaap_SeveranceCosts1" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost" xlink:title="Definition : loc_us-gaap_RestructuringCostAndReserveLineItems to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeverancePaymentsAndOtherCosts" xlink:label="loc_hcp_SeverancePaymentsAndOtherCosts" xlink:title="SeverancePaymentsAndOtherCosts" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems" xlink:to="loc_hcp_SeverancePaymentsAndOtherCosts" xlink:title="Definition : loc_us-gaap_RestructuringCostAndReserveLineItems to loc_hcp_SeverancePaymentsAndOtherCosts" xlink:type="arc" use="optional" order="4" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureRealEstatePropertyInvestmentsDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems" xlink:title="BusinessAcquisitionLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:title="ScheduleOfBusinessAcquisitionsByAcquisitionTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="BusinessAcquisitionAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="BusinessAcquisitionAcquireeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAxis to loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingMember" xlink:label="loc_hcp_SeniorHousingMember" xlink:title="SeniorHousingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterestAbstract" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterestAbstract" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterestAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross" xlink:title="PaymentsToAcquireBusinessesGross" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterestAbstract" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterestAbstract to loc_us-gaap_PaymentsToAcquireBusinessesGross" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_UKPortfolioMember" xlink:label="loc_hcp_UKPortfolioMember" xlink:title="UKPortfolioMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="loc_hcp_UKPortfolioMember" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAcquireeDomain to loc_hcp_UKPortfolioMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_BusinessAcquisitionAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BlackstoneJVMember" xlink:label="loc_hcp_BlackstoneJVMember" xlink:title="BlackstoneJVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="loc_hcp_BlackstoneJVMember" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAcquireeDomain to loc_hcp_BlackstoneJVMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfFacilitiesAcquired" xlink:label="loc_hcp_NumberOfFacilitiesAcquired" xlink:title="NumberOfFacilitiesAcquired" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfFacilitiesAcquired" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfFacilitiesAcquired" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LifescienceMember" xlink:label="loc_hcp_LifescienceMember" xlink:title="LifescienceMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_LifescienceMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_LifescienceMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterestAbstract" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterestAbstract to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MedicalOfficeMember" xlink:label="loc_hcp_MedicalOfficeMember" xlink:title="MedicalOfficeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_MedicalOfficeMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_MedicalOfficeMember" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1" xlink:title="BusinessCombinationConsiderationTransferred1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_BusinessCombinationConsiderationTransferred1" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" xlink:title="BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterestAbstract" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterestAbstract to loc_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LeaseTermInitial" xlink:label="loc_hcp_LeaseTermInitial" xlink:title="LeaseTermInitial" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_LeaseTermInitial" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_LeaseTermInitial" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HospitalMember" xlink:label="loc_hcp_HospitalMember" xlink:title="HospitalMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_HospitalMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_HospitalMember" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterestAbstract" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterestAbstract to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfExtensionOptionsInLeases" xlink:label="loc_hcp_NumberOfExtensionOptionsInLeases" xlink:title="NumberOfExtensionOptionsInLeases" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfExtensionOptionsInLeases" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfExtensionOptionsInLeases" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterestAbstract" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterestAbstract to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ExtensionOptionsInMasterLeasesTerm" xlink:label="loc_hcp_ExtensionOptionsInMasterLeasesTerm" xlink:title="ExtensionOptionsInMasterLeasesTerm" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_ExtensionOptionsInMasterLeasesTerm" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_ExtensionOptionsInMasterLeasesTerm" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent" xlink:title="OperatingLeasesFutureMinimumPaymentsReceivableCurrent" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OperatingLeasesBasisSpreadOnVariableFloorRate" xlink:label="loc_hcp_OperatingLeasesBasisSpreadOnVariableFloorRate" xlink:title="OperatingLeasesBasisSpreadOnVariableFloorRate" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_OperatingLeasesBasisSpreadOnVariableFloorRate" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_OperatingLeasesBasisSpreadOnVariableFloorRate" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OperatingLeasesBasisSpreadOnVariableCeilingRate" xlink:label="loc_hcp_OperatingLeasesBasisSpreadOnVariableCeilingRate" xlink:title="OperatingLeasesBasisSpreadOnVariableCeilingRate" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_OperatingLeasesBasisSpreadOnVariableCeilingRate" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_OperatingLeasesBasisSpreadOnVariableCeilingRate" xlink:type="arc" use="optional" order="9" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterestAbstract" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterestAbstract" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestNonManagingMemberFairValue" xlink:label="loc_hcp_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestNonManagingMemberFairValue" xlink:title="BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestNonManagingMemberFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestNonManagingMemberFairValue" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestNonManagingMemberFairValue" xlink:type="arc" use="optional" order="11" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AreaOfLand" xlink:label="loc_us-gaap_AreaOfLand" xlink:title="AreaOfLand" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_AreaOfLand" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_AreaOfLand" xlink:type="arc" use="optional" order="12" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LeasesWithPurchaseOptionPurchasePrice" xlink:label="loc_hcp_LeasesWithPurchaseOptionPurchasePrice" xlink:title="LeasesWithPurchaseOptionPurchasePrice" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_LeasesWithPurchaseOptionPurchasePrice" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_LeasesWithPurchaseOptionPurchasePrice" xlink:type="arc" use="optional" order="13" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsToAcquireProductiveAssets" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets" xlink:title="PaymentsToAcquireProductiveAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_PaymentsToAcquireProductiveAssets" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_PaymentsToAcquireProductiveAssets" xlink:type="arc" use="optional" order="14" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners" xlink:title="MinorityInterestOwnershipPercentageByNoncontrollingOwners" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PostAcuteAndSkilledNursingMember" xlink:label="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="PostAcuteAndSkilledNursingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_PostAcuteAndSkilledNursingMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingLifeScienceAndMedicalOfficeMember" xlink:label="loc_hcp_SeniorHousingLifeScienceAndMedicalOfficeMember" xlink:title="SeniorHousingLifeScienceAndMedicalOfficeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingLifeScienceAndMedicalOfficeMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingLifeScienceAndMedicalOfficeMember" xlink:type="arc" use="optional" order="8001" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureVariableInterestEntitiesDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_VariableInterestEntityLineItems" xlink:label="loc_us-gaap_VariableInterestEntityLineItems" xlink:title="VariableInterestEntityLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfVariableInterestEntitiesTable" xlink:label="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable" xlink:title="ScheduleOfVariableInterestEntitiesTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_VariableInterestEntityLineItems" xlink:to="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable" xlink:title="Definition : loc_us-gaap_VariableInterestEntityLineItems to loc_us-gaap_ScheduleOfVariableInterestEntitiesTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis" xlink:label="loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis" xlink:title="VariableInterestEntitiesByClassificationOfEntityAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ClassificationOfVariableInterestEntityDomain" xlink:label="loc_us-gaap_ClassificationOfVariableInterestEntityDomain" xlink:title="ClassificationOfVariableInterestEntityDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis" xlink:to="loc_us-gaap_ClassificationOfVariableInterestEntityDomain" xlink:title="Definition : loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis to loc_us-gaap_ClassificationOfVariableInterestEntityDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember" xlink:label="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember" xlink:title="VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassificationOfVariableInterestEntityDomain" xlink:to="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember" xlink:title="Definition : loc_us-gaap_ClassificationOfVariableInterestEntityDomain to loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_VariableInterestEntityNotPrimaryBeneficiaryTenantsWithOperatingLeasesMember" xlink:label="loc_hcp_VariableInterestEntityNotPrimaryBeneficiaryTenantsWithOperatingLeasesMember" xlink:title="VariableInterestEntityNotPrimaryBeneficiaryTenantsWithOperatingLeasesMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember" xlink:to="loc_hcp_VariableInterestEntityNotPrimaryBeneficiaryTenantsWithOperatingLeasesMember" xlink:title="Definition : loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember to loc_hcp_VariableInterestEntityNotPrimaryBeneficiaryTenantsWithOperatingLeasesMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable" xlink:to="loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfVariableInterestEntitiesTable to loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ClassificationOfVariableInterestEntityDomain" xlink:label="ClassificationOfVariableInterestEntityDomain_1" xlink:title="ClassificationOfVariableInterestEntityDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis" xlink:to="ClassificationOfVariableInterestEntityDomain_1" xlink:title="Definition : loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis to loc_us-gaap_ClassificationOfVariableInterestEntityDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_VariableInterestEntityNotPrimaryBeneficiaryTenantsWithDirectFinancingLeasesMember" xlink:label="loc_hcp_VariableInterestEntityNotPrimaryBeneficiaryTenantsWithDirectFinancingLeasesMember" xlink:title="VariableInterestEntityNotPrimaryBeneficiaryTenantsWithDirectFinancingLeasesMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember" xlink:to="loc_hcp_VariableInterestEntityNotPrimaryBeneficiaryTenantsWithDirectFinancingLeasesMember" xlink:title="Definition : loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember to loc_hcp_VariableInterestEntityNotPrimaryBeneficiaryTenantsWithDirectFinancingLeasesMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryAggregatedDisclosureMember" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryAggregatedDisclosureMember" xlink:title="VariableInterestEntityPrimaryBeneficiaryAggregatedDisclosureMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassificationOfVariableInterestEntityDomain" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryAggregatedDisclosureMember" xlink:title="Definition : loc_us-gaap_ClassificationOfVariableInterestEntityDomain to loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryAggregatedDisclosureMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PropertiesLeasedNumber" xlink:label="loc_hcp_PropertiesLeasedNumber" xlink:title="PropertiesLeasedNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems" xlink:to="loc_hcp_PropertiesLeasedNumber" xlink:title="Definition : loc_us-gaap_VariableInterestEntityLineItems to loc_hcp_PropertiesLeasedNumber" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:title="AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfVariableInterestEntitiesTable to loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_VariableInterestEntityNotPrimaryBeneficiarySeniorLoansSecuredMember" xlink:label="loc_hcp_VariableInterestEntityNotPrimaryBeneficiarySeniorLoansSecuredMember" xlink:title="VariableInterestEntityNotPrimaryBeneficiarySeniorLoansSecuredMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember" xlink:to="loc_hcp_VariableInterestEntityNotPrimaryBeneficiarySeniorLoansSecuredMember" xlink:title="Definition : loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember to loc_hcp_VariableInterestEntityNotPrimaryBeneficiarySeniorLoansSecuredMember" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_VIETenantsNumber" xlink:label="loc_hcp_VIETenantsNumber" xlink:title="VIETenantsNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems" xlink:to="loc_hcp_VIETenantsNumber" xlink:title="Definition : loc_us-gaap_VariableInterestEntityLineItems to loc_hcp_VIETenantsNumber" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_VariableInterestEntityNotPrimaryBeneficiaryDebtInvestmentMember" xlink:label="loc_hcp_VariableInterestEntityNotPrimaryBeneficiaryDebtInvestmentMember" xlink:title="VariableInterestEntityNotPrimaryBeneficiaryDebtInvestmentMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember" xlink:to="loc_hcp_VariableInterestEntityNotPrimaryBeneficiaryDebtInvestmentMember" xlink:title="Definition : loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember to loc_hcp_VariableInterestEntityNotPrimaryBeneficiaryDebtInvestmentMember" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfPartnershipsLeasePropertyOwned" xlink:label="loc_hcp_NumberOfPartnershipsLeasePropertyOwned" xlink:title="NumberOfPartnershipsLeasePropertyOwned" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems" xlink:to="loc_hcp_NumberOfPartnershipsLeasePropertyOwned" xlink:title="Definition : loc_us-gaap_VariableInterestEntityLineItems to loc_hcp_NumberOfPartnershipsLeasePropertyOwned" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount" xlink:label="loc_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount" xlink:title="VariableInterestEntityEntityMaximumLossExposureAmount" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems" xlink:to="loc_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount" xlink:title="Definition : loc_us-gaap_VariableInterestEntityLineItems to loc_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_VariableInterestEntityClassificationOfCarryingAmountAssets" xlink:label="loc_us-gaap_VariableInterestEntityClassificationOfCarryingAmountAssets" xlink:title="VariableInterestEntityClassificationOfCarryingAmountAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems" xlink:to="loc_us-gaap_VariableInterestEntityClassificationOfCarryingAmountAssets" xlink:title="Definition : loc_us-gaap_VariableInterestEntityLineItems to loc_us-gaap_VariableInterestEntityClassificationOfCarryingAmountAssets" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet" xlink:label="loc_us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet" xlink:title="VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems" xlink:to="loc_us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet" xlink:title="Definition : loc_us-gaap_VariableInterestEntityLineItems to loc_us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_VariableInterestEntityNumberOfTaxCreditSubsidiaries" xlink:label="loc_hcp_VariableInterestEntityNumberOfTaxCreditSubsidiaries" xlink:title="VariableInterestEntityNumberOfTaxCreditSubsidiaries" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems" xlink:to="loc_hcp_VariableInterestEntityNumberOfTaxCreditSubsidiaries" xlink:title="Definition : loc_us-gaap_VariableInterestEntityLineItems to loc_hcp_VariableInterestEntityNumberOfTaxCreditSubsidiaries" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReceivableTypeDomain" xlink:label="loc_us-gaap_ReceivableTypeDomain" xlink:title="ReceivableTypeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:to="loc_us-gaap_ReceivableTypeDomain" xlink:title="Definition : loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis to loc_us-gaap_ReceivableTypeDomain" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DelphisOperationsLPSeniorSecuredTermLoanMember" xlink:label="loc_hcp_DelphisOperationsLPSeniorSecuredTermLoanMember" xlink:title="DelphisOperationsLPSeniorSecuredTermLoanMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain" xlink:to="loc_hcp_DelphisOperationsLPSeniorSecuredTermLoanMember" xlink:title="Definition : loc_us-gaap_ReceivableTypeDomain to loc_hcp_DelphisOperationsLPSeniorSecuredTermLoanMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_VariableInterestEntityNotPrimaryBeneficiarySubordinatedSecuredMember" xlink:label="loc_hcp_VariableInterestEntityNotPrimaryBeneficiarySubordinatedSecuredMember" xlink:title="VariableInterestEntityNotPrimaryBeneficiarySubordinatedSecuredMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember" xlink:to="loc_hcp_VariableInterestEntityNotPrimaryBeneficiarySubordinatedSecuredMember" xlink:title="Definition : loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember to loc_hcp_VariableInterestEntityNotPrimaryBeneficiarySubordinatedSecuredMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_VariableInterestEntityOwnershipPercentage" xlink:label="loc_us-gaap_VariableInterestEntityOwnershipPercentage" xlink:title="VariableInterestEntityOwnershipPercentage" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems" xlink:to="loc_us-gaap_VariableInterestEntityOwnershipPercentage" xlink:title="Definition : loc_us-gaap_VariableInterestEntityLineItems to loc_us-gaap_VariableInterestEntityOwnershipPercentage" xlink:type="arc" use="optional" order="8000" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureInvestmentsInAndAdvancesToUnconsolidatedJointVenturesDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:title="ScheduleOfEquityMethodInvestmentsLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:title="ScheduleOfEquityMethodInvestmentsTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems to loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis" xlink:title="RangeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember" xlink:title="RangeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis" xlink:to="loc_us-gaap_RangeMember" xlink:title="Definition : loc_us-gaap_RangeAxis to loc_us-gaap_RangeMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:title="ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvesteeNameDomain" xlink:label="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:title="EquityMethodInvesteeNameDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:to="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis to loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingMember" xlink:label="loc_hcp_SeniorHousingMember" xlink:title="SeniorHousingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember" xlink:title="MinimumMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember" xlink:to="loc_us-gaap_MinimumMember" xlink:title="Definition : loc_us-gaap_RangeMember to loc_us-gaap_MinimumMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCRManorCareIncMember" xlink:label="loc_hcp_HCRManorCareIncMember" xlink:title="HCRManorCareIncMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:to="loc_hcp_HCRManorCareIncMember" xlink:title="Definition : loc_us-gaap_EquityMethodInvesteeNameDomain to loc_hcp_HCRManorCareIncMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCPLifeSciencesMember" xlink:label="loc_hcp_HCPLifeSciencesMember" xlink:title="HCPLifeSciencesMember" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_TorreyPinesScienceCenterMember" xlink:label="loc_hcp_TorreyPinesScienceCenterMember" xlink:title="TorreyPinesScienceCenterMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_HCPLifeSciencesMember" xlink:to="loc_hcp_TorreyPinesScienceCenterMember" xlink:title="Definition : loc_hcp_HCPLifeSciencesMember to loc_hcp_TorreyPinesScienceCenterMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable to loc_us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvesteeNameDomain" xlink:label="EquityMethodInvesteeNameDomain_1" xlink:title="EquityMethodInvesteeNameDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:to="EquityMethodInvesteeNameDomain_1" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis to loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PostAcuteAndSkilledNursingMember" xlink:label="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="PostAcuteAndSkilledNursingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_PostAcuteAndSkilledNursingMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember" xlink:title="MaximumMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember" xlink:to="loc_us-gaap_MaximumMember" xlink:title="Definition : loc_us-gaap_RangeMember to loc_us-gaap_MaximumMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCPVenturesIIILLCMember" xlink:label="loc_hcp_HCPVenturesIIILLCMember" xlink:title="HCPVenturesIIILLCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:to="loc_hcp_HCPVenturesIIILLCMember" xlink:title="Definition : loc_us-gaap_EquityMethodInvesteeNameDomain to loc_hcp_HCPVenturesIIILLCMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BritanniaBiotechGatewayLPMember" xlink:label="loc_hcp_BritanniaBiotechGatewayLPMember" xlink:title="BritanniaBiotechGatewayLPMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_HCPLifeSciencesMember" xlink:to="loc_hcp_BritanniaBiotechGatewayLPMember" xlink:title="Definition : loc_hcp_HCPLifeSciencesMember to loc_hcp_BritanniaBiotechGatewayLPMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:title="InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems to loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LifescienceMember" xlink:label="loc_hcp_LifescienceMember" xlink:title="LifescienceMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_LifescienceMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_LifescienceMember" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCPVenturesIVLLCMember" xlink:label="loc_hcp_HCPVenturesIVLLCMember" xlink:title="HCPVenturesIVLLCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:to="loc_hcp_HCPVenturesIVLLCMember" xlink:title="Definition : loc_us-gaap_EquityMethodInvesteeNameDomain to loc_hcp_HCPVenturesIVLLCMember" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LASDKLPMember" xlink:label="loc_hcp_LASDKLPMember" xlink:title="LASDKLPMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_HCPLifeSciencesMember" xlink:to="loc_hcp_LASDKLPMember" xlink:title="Definition : loc_hcp_HCPLifeSciencesMember to loc_hcp_LASDKLPMember" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EquityMethodInvestmentReportedInLiabilities" xlink:label="loc_hcp_EquityMethodInvestmentReportedInLiabilities" xlink:title="EquityMethodInvestmentReportedInLiabilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="loc_hcp_EquityMethodInvestmentReportedInLiabilities" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems to loc_hcp_EquityMethodInvestmentReportedInLiabilities" xlink:type="arc" use="optional" order="3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:to="loc_us-gaap_RangeAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable to loc_us-gaap_RangeAxis" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HospitalAndMedicalOfficeMember" xlink:label="loc_hcp_HospitalAndMedicalOfficeMember" xlink:title="HospitalAndMedicalOfficeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_HospitalAndMedicalOfficeMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_HospitalAndMedicalOfficeMember" xlink:type="arc" use="optional" order="4" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:to="loc_hcp_HCPLifeSciencesMember" xlink:title="Definition : loc_us-gaap_EquityMethodInvesteeNameDomain to loc_hcp_HCPLifeSciencesMember" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:title="EquityMethodInvestmentOwnershipPercentage" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems to loc_us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MedicalOfficeMember" xlink:label="loc_hcp_MedicalOfficeMember" xlink:title="MedicalOfficeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_MedicalOfficeMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_MedicalOfficeMember" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SuburbanPropertiesLLCMember" xlink:label="loc_hcp_SuburbanPropertiesLLCMember" xlink:title="SuburbanPropertiesLLCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:to="loc_hcp_SuburbanPropertiesLLCMember" xlink:title="Definition : loc_us-gaap_EquityMethodInvesteeNameDomain to loc_hcp_SuburbanPropertiesLLCMember" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfUnconsolidatedJointVenture" xlink:label="loc_hcp_NumberOfUnconsolidatedJointVenture" xlink:title="NumberOfUnconsolidatedJointVenture" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="loc_hcp_NumberOfUnconsolidatedJointVenture" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems to loc_hcp_NumberOfUnconsolidatedJointVenture" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_AdvancesToUnconsolidatedJointVenturesNetMember" xlink:label="loc_hcp_AdvancesToUnconsolidatedJointVenturesNetMember" xlink:title="AdvancesToUnconsolidatedJointVenturesNetMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:to="loc_hcp_AdvancesToUnconsolidatedJointVenturesNetMember" xlink:title="Definition : loc_us-gaap_EquityMethodInvesteeNameDomain to loc_hcp_AdvancesToUnconsolidatedJointVenturesNetMember" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ReductionOfCapitalLeasesIncomeStatementDirectFinancingLeaseRevenue" xlink:label="loc_hcp_ReductionOfCapitalLeasesIncomeStatementDirectFinancingLeaseRevenue" xlink:title="ReductionOfCapitalLeasesIncomeStatementDirectFinancingLeaseRevenue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="loc_hcp_ReductionOfCapitalLeasesIncomeStatementDirectFinancingLeaseRevenue" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems to loc_hcp_ReductionOfCapitalLeasesIncomeStatementDirectFinancingLeaseRevenue" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EdgewoodAssistedLivingCenterLLCMember" xlink:label="loc_hcp_EdgewoodAssistedLivingCenterLLCMember" xlink:title="EdgewoodAssistedLivingCenterLLCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:to="loc_hcp_EdgewoodAssistedLivingCenterLLCMember" xlink:title="Definition : loc_us-gaap_EquityMethodInvesteeNameDomain to loc_hcp_EdgewoodAssistedLivingCenterLLCMember" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeminoleShoresLivingCenterLLCMember" xlink:label="loc_hcp_SeminoleShoresLivingCenterLLCMember" xlink:title="SeminoleShoresLivingCenterLLCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:to="loc_hcp_SeminoleShoresLivingCenterLLCMember" xlink:title="Definition : loc_us-gaap_EquityMethodInvesteeNameDomain to loc_hcp_SeminoleShoresLivingCenterLLCMember" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingPartnershipMember" xlink:label="loc_hcp_SeniorHousingPartnershipMember" xlink:title="SeniorHousingPartnershipMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:to="loc_hcp_SeniorHousingPartnershipMember" xlink:title="Definition : loc_us-gaap_EquityMethodInvesteeNameDomain to loc_hcp_SeniorHousingPartnershipMember" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HospitalMember" xlink:label="loc_hcp_HospitalMember" xlink:title="HospitalMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_HospitalMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_HospitalMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCPVenturesIIMember" xlink:label="loc_hcp_HCPVenturesIIMember" xlink:title="HCPVenturesIIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:to="loc_hcp_HCPVenturesIIMember" xlink:title="Definition : loc_us-gaap_EquityMethodInvesteeNameDomain to loc_hcp_HCPVenturesIIMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EquityMethodInvestmentOwnershipPercentageSubjectToDilution" xlink:label="loc_hcp_EquityMethodInvestmentOwnershipPercentageSubjectToDilution" xlink:title="EquityMethodInvestmentOwnershipPercentageSubjectToDilution" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="loc_hcp_EquityMethodInvestmentOwnershipPercentageSubjectToDilution" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems to loc_hcp_EquityMethodInvestmentOwnershipPercentageSubjectToDilution" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HorizonBayHydeParkLLCMember" xlink:label="loc_hcp_HorizonBayHydeParkLLCMember" xlink:title="HorizonBayHydeParkLLCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:to="loc_hcp_HorizonBayHydeParkLLCMember" xlink:title="Definition : loc_us-gaap_EquityMethodInvesteeNameDomain to loc_hcp_HorizonBayHydeParkLLCMember" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EquityMethodInvestmentRelatedStraightLineRentAssets" xlink:label="loc_hcp_EquityMethodInvestmentRelatedStraightLineRentAssets" xlink:title="EquityMethodInvestmentRelatedStraightLineRentAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="loc_hcp_EquityMethodInvestmentRelatedStraightLineRentAssets" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems to loc_hcp_EquityMethodInvestmentRelatedStraightLineRentAssets" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsToAcquireEquityMethodInvestments" xlink:label="loc_us-gaap_PaymentsToAcquireEquityMethodInvestments" xlink:title="PaymentsToAcquireEquityMethodInvestments" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="loc_us-gaap_PaymentsToAcquireEquityMethodInvestments" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems to loc_us-gaap_PaymentsToAcquireEquityMethodInvestments" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GoodwillImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairmentLoss" xlink:title="GoodwillImpairmentLoss" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="loc_us-gaap_GoodwillImpairmentLoss" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems to loc_us-gaap_GoodwillImpairmentLoss" xlink:type="arc" use="optional" order="8003" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment" xlink:label="loc_us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment" xlink:title="EquityMethodInvestmentOtherThanTemporaryImpairment" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="loc_us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems to loc_us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment" xlink:type="arc" use="optional" order="8004" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureCommitmentsAndContingenciesDetails5">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems" xlink:title="LossContingenciesLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable" xlink:title="LossContingenciesTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_us-gaap_LossContingenciesTable" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_us-gaap_LossContingenciesTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CounterpartyNameAxis" xlink:label="loc_us-gaap_CounterpartyNameAxis" xlink:title="CounterpartyNameAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:title="RepurchaseAgreementCounterpartyNameDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CounterpartyNameAxis" xlink:to="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:title="Definition : loc_us-gaap_CounterpartyNameAxis to loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConsolidationItemsAxis" xlink:label="loc_us-gaap_ConsolidationItemsAxis" xlink:title="ConsolidationItemsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain" xlink:title="ConsolidationItemsDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConsolidationItemsAxis" xlink:to="loc_us-gaap_ConsolidationItemsDomain" xlink:title="Definition : loc_us-gaap_ConsolidationItemsAxis to loc_us-gaap_ConsolidationItemsDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SunriseMember" xlink:label="loc_hcp_SunriseMember" xlink:title="SunriseMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:to="loc_hcp_SunriseMember" xlink:title="Definition : loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain to loc_hcp_SunriseMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingMember" xlink:label="loc_hcp_SeniorHousingMember" xlink:title="SeniorHousingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember" xlink:title="OperatingSegmentsMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidationItemsDomain" xlink:to="loc_us-gaap_OperatingSegmentsMember" xlink:title="Definition : loc_us-gaap_ConsolidationItemsDomain to loc_us-gaap_OperatingSegmentsMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable" xlink:to="loc_us-gaap_ConsolidationItemsAxis" xlink:title="Definition : loc_us-gaap_LossContingenciesTable to loc_us-gaap_ConsolidationItemsAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BrookdaleMember" xlink:label="loc_hcp_BrookdaleMember" xlink:title="BrookdaleMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:to="loc_hcp_BrookdaleMember" xlink:title="Definition : loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain to loc_hcp_BrookdaleMember" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_us-gaap_LossContingenciesTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable" xlink:to="loc_us-gaap_CounterpartyNameAxis" xlink:title="Definition : loc_us-gaap_LossContingenciesTable to loc_us-gaap_CounterpartyNameAxis" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfPropertiesRightToTerminateManagementContracts" xlink:label="loc_hcp_NumberOfPropertiesRightToTerminateManagementContracts" xlink:title="NumberOfPropertiesRightToTerminateManagementContracts" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_hcp_NumberOfPropertiesRightToTerminateManagementContracts" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_hcp_NumberOfPropertiesRightToTerminateManagementContracts" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RemainingCommunitiesLeasedAfterTerminationOfRightsNumber" xlink:label="loc_hcp_RemainingCommunitiesLeasedAfterTerminationOfRightsNumber" xlink:title="RemainingCommunitiesLeasedAfterTerminationOfRightsNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_hcp_RemainingCommunitiesLeasedAfterTerminationOfRightsNumber" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_hcp_RemainingCommunitiesLeasedAfterTerminationOfRightsNumber" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_AmountPayableTerminationOfManagementContracts" xlink:label="loc_hcp_AmountPayableTerminationOfManagementContracts" xlink:title="AmountPayableTerminationOfManagementContracts" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_hcp_AmountPayableTerminationOfManagementContracts" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_hcp_AmountPayableTerminationOfManagementContracts" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_WorkingCapitalReceivedTerminationOfManagementContracts" xlink:label="loc_hcp_WorkingCapitalReceivedTerminationOfManagementContracts" xlink:title="WorkingCapitalReceivedTerminationOfManagementContracts" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_hcp_WorkingCapitalReceivedTerminationOfManagementContracts" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_hcp_WorkingCapitalReceivedTerminationOfManagementContracts" xlink:type="arc" use="optional" order="8003" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CapitalizedInitialDirectLeasingCost" xlink:label="loc_hcp_CapitalizedInitialDirectLeasingCost" xlink:title="CapitalizedInitialDirectLeasingCost" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_hcp_CapitalizedInitialDirectLeasingCost" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_hcp_CapitalizedInitialDirectLeasingCost" xlink:type="arc" use="optional" order="8004" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_TripleNetMasterLeasesWithOperatorNumber" xlink:label="loc_hcp_TripleNetMasterLeasesWithOperatorNumber" xlink:title="TripleNetMasterLeasesWithOperatorNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_hcp_TripleNetMasterLeasesWithOperatorNumber" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_hcp_TripleNetMasterLeasesWithOperatorNumber" xlink:type="arc" use="optional" order="8005" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfNewlyLeasedProperties" xlink:label="loc_hcp_NumberOfNewlyLeasedProperties" xlink:title="NumberOfNewlyLeasedProperties" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_hcp_NumberOfNewlyLeasedProperties" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_hcp_NumberOfNewlyLeasedProperties" xlink:type="arc" use="optional" order="8006" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FixedLeaseTermInNewlyLeasedProperties" xlink:label="loc_hcp_FixedLeaseTermInNewlyLeasedProperties" xlink:title="FixedLeaseTermInNewlyLeasedProperties" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_hcp_FixedLeaseTermInNewlyLeasedProperties" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_hcp_FixedLeaseTermInNewlyLeasedProperties" xlink:type="arc" use="optional" order="8007" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PaymentToTerminateLeases" xlink:label="loc_hcp_PaymentToTerminateLeases" xlink:title="PaymentToTerminateLeases" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_hcp_PaymentToTerminateLeases" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_hcp_PaymentToTerminateLeases" xlink:type="arc" use="optional" order="8008" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureCommitmentsAndContingenciesDetails3">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskLineItems" xlink:label="loc_us-gaap_ConcentrationRiskLineItems" xlink:title="ConcentrationRiskLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskTable" xlink:label="loc_us-gaap_ConcentrationRiskTable" xlink:title="ConcentrationRiskTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_us-gaap_ConcentrationRiskTable" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_us-gaap_ConcentrationRiskTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CounterpartyNameAxis" xlink:label="loc_us-gaap_CounterpartyNameAxis" xlink:title="CounterpartyNameAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:title="RepurchaseAgreementCounterpartyNameDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CounterpartyNameAxis" xlink:to="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:title="Definition : loc_us-gaap_CounterpartyNameAxis to loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BrookdaleMember" xlink:label="loc_hcp_BrookdaleMember" xlink:title="BrookdaleMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:to="loc_hcp_BrookdaleMember" xlink:title="Definition : loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain to loc_hcp_BrookdaleMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable" xlink:to="loc_us-gaap_CounterpartyNameAxis" xlink:title="Definition : loc_us-gaap_ConcentrationRiskTable to loc_us-gaap_CounterpartyNameAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_InvestmentsInJointVenturesSeniorHousingFacilitiesNumber" xlink:label="loc_hcp_InvestmentsInJointVenturesSeniorHousingFacilitiesNumber" xlink:title="InvestmentsInJointVenturesSeniorHousingFacilitiesNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_InvestmentsInJointVenturesSeniorHousingFacilitiesNumber" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_InvestmentsInJointVenturesSeniorHousingFacilitiesNumber" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_InvestmentsInJointVenturesSeniorHousingCommunitiesAssumedInCurrentTripleNetLeaseNumber" xlink:label="loc_hcp_InvestmentsInJointVenturesSeniorHousingCommunitiesAssumedInCurrentTripleNetLeaseNumber" xlink:title="InvestmentsInJointVenturesSeniorHousingCommunitiesAssumedInCurrentTripleNetLeaseNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_InvestmentsInJointVenturesSeniorHousingCommunitiesAssumedInCurrentTripleNetLeaseNumber" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_InvestmentsInJointVenturesSeniorHousingCommunitiesAssumedInCurrentTripleNetLeaseNumber" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_InvestmentsInJointVenturesSeniorHousingCommunitiesInNewTripleNetLeaseNumber" xlink:label="loc_hcp_InvestmentsInJointVenturesSeniorHousingCommunitiesInNewTripleNetLeaseNumber" xlink:title="InvestmentsInJointVenturesSeniorHousingCommunitiesInNewTripleNetLeaseNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_InvestmentsInJointVenturesSeniorHousingCommunitiesInNewTripleNetLeaseNumber" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_InvestmentsInJointVenturesSeniorHousingCommunitiesInNewTripleNetLeaseNumber" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_InvestmentsInJointVenturesSeniorHousingCommunitiesAssumedManagedByThirdPartyNumber" xlink:label="loc_hcp_InvestmentsInJointVenturesSeniorHousingCommunitiesAssumedManagedByThirdPartyNumber" xlink:title="InvestmentsInJointVenturesSeniorHousingCommunitiesAssumedManagedByThirdPartyNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_InvestmentsInJointVenturesSeniorHousingCommunitiesAssumedManagedByThirdPartyNumber" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_InvestmentsInJointVenturesSeniorHousingCommunitiesAssumedManagedByThirdPartyNumber" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PercentageOfInterestInJointVenture" xlink:label="loc_hcp_PercentageOfInterestInJointVenture" xlink:title="PercentageOfInterestInJointVenture" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_PercentageOfInterestInJointVenture" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_PercentageOfInterestInJointVenture" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_InvestmentsInJointVenturesSeniorLivingCommunitiesOperatedInRIDEAStructureNumber" xlink:label="loc_hcp_InvestmentsInJointVenturesSeniorLivingCommunitiesOperatedInRIDEAStructureNumber" xlink:title="InvestmentsInJointVenturesSeniorLivingCommunitiesOperatedInRIDEAStructureNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_InvestmentsInJointVenturesSeniorLivingCommunitiesOperatedInRIDEAStructureNumber" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_InvestmentsInJointVenturesSeniorLivingCommunitiesOperatedInRIDEAStructureNumber" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CommonStockAcquireAvailableForSaleSecuritiesShares" xlink:label="loc_hcp_CommonStockAcquireAvailableForSaleSecuritiesShares" xlink:title="CommonStockAcquireAvailableForSaleSecuritiesShares" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_CommonStockAcquireAvailableForSaleSecuritiesShares" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_CommonStockAcquireAvailableForSaleSecuritiesShares" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ConcentrationRiskIncreaseInRevenue" xlink:label="loc_hcp_ConcentrationRiskIncreaseInRevenue" xlink:title="ConcentrationRiskIncreaseInRevenue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_ConcentrationRiskIncreaseInRevenue" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_ConcentrationRiskIncreaseInRevenue" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ConcentrationRiskIncreaseInOperatingExpenses" xlink:label="loc_hcp_ConcentrationRiskIncreaseInOperatingExpenses" xlink:title="ConcentrationRiskIncreaseInOperatingExpenses" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_ConcentrationRiskIncreaseInOperatingExpenses" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_ConcentrationRiskIncreaseInOperatingExpenses" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ConcentrationRiskRevenue" xlink:label="loc_hcp_ConcentrationRiskRevenue" xlink:title="ConcentrationRiskRevenue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_ConcentrationRiskRevenue" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_ConcentrationRiskRevenue" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ConcentrationRiskOperatingExpenses" xlink:label="loc_hcp_ConcentrationRiskOperatingExpenses" xlink:title="ConcentrationRiskOperatingExpenses" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_ConcentrationRiskOperatingExpenses" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_ConcentrationRiskOperatingExpenses" xlink:type="arc" use="optional" order="8003" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureMergersAndAcquisitionDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems" xlink:title="BusinessAcquisitionLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:title="ScheduleOfBusinessAcquisitionsByAcquisitionTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="BusinessAcquisitionAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="BusinessAcquisitionAcquireeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAxis to loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis" xlink:title="StatementScenarioAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementScenarioAxis" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain" xlink:title="Definition : loc_us-gaap_StatementScenarioAxis to loc_us-gaap_ScenarioUnspecifiedDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCRManorCareIncMember" xlink:label="loc_hcp_HCRManorCareIncMember" xlink:title="HCRManorCareIncMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="loc_hcp_HCRManorCareIncMember" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAcquireeDomain to loc_hcp_HCRManorCareIncMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionPurchasePriceAllocationDirectFinancingLeases" xlink:label="loc_hcp_BusinessAcquisitionPurchasePriceAllocationDirectFinancingLeases" xlink:title="BusinessAcquisitionPurchasePriceAllocationDirectFinancingLeases" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:to="loc_hcp_BusinessAcquisitionPurchasePriceAllocationDirectFinancingLeases" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract to loc_hcp_BusinessAcquisitionPurchasePriceAllocationDirectFinancingLeases" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionOtherDisclosuresAbstract" xlink:label="loc_hcp_BusinessAcquisitionOtherDisclosuresAbstract" xlink:title="BusinessAcquisitionOtherDisclosuresAbstract" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BridgeLoanTermOfFacility" xlink:label="loc_hcp_BridgeLoanTermOfFacility" xlink:title="BridgeLoanTermOfFacility" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_BusinessAcquisitionOtherDisclosuresAbstract" xlink:to="loc_hcp_BridgeLoanTermOfFacility" xlink:title="Definition : loc_hcp_BusinessAcquisitionOtherDisclosuresAbstract to loc_hcp_BridgeLoanTermOfFacility" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:label="loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:title="BusinessAcquisitionProFormaInformationAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionsProFormaRevenue" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaRevenue" xlink:title="BusinessAcquisitionsProFormaRevenue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaRevenue" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract to loc_us-gaap_BusinessAcquisitionsProFormaRevenue" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_BusinessAcquisitionAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain_1" xlink:title="ScenarioUnspecifiedDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain_1" xlink:title="Definition : loc_us-gaap_StatementScenarioAxis to loc_us-gaap_ScenarioUnspecifiedDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="loc_us-gaap_ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain" xlink:to="loc_us-gaap_ScenarioPreviouslyReportedMember" xlink:title="Definition : loc_us-gaap_ScenarioUnspecifiedDomain to loc_us-gaap_ScenarioPreviouslyReportedMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredAbstract" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredAbstract" xlink:title="BusinessCombinationConsiderationTransferredAbstract" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_InvestmentsInLoanReceivablesFairValue" xlink:label="loc_hcp_InvestmentsInLoanReceivablesFairValue" xlink:title="InvestmentsInLoanReceivablesFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferredAbstract" xlink:to="loc_hcp_InvestmentsInLoanReceivablesFairValue" xlink:title="Definition : loc_us-gaap_BusinessCombinationConsiderationTransferredAbstract to loc_hcp_InvestmentsInLoanReceivablesFairValue" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BridgeLoanCommitmentsObtained" xlink:label="loc_hcp_BridgeLoanCommitmentsObtained" xlink:title="BridgeLoanCommitmentsObtained" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_BusinessAcquisitionOtherDisclosuresAbstract" xlink:to="loc_hcp_BridgeLoanCommitmentsObtained" xlink:title="Definition : loc_hcp_BusinessAcquisitionOtherDisclosuresAbstract to loc_hcp_BridgeLoanCommitmentsObtained" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss" xlink:title="BusinessAcquisitionsProFormaNetIncomeLoss" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract to loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_StatementScenarioAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_StatementScenarioAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NumberOfStatesInWhichEntityOperates" xlink:label="loc_us-gaap_NumberOfStatesInWhichEntityOperates" xlink:title="NumberOfStatesInWhichEntityOperates" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_NumberOfStatesInWhichEntityOperates" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_NumberOfStatesInWhichEntityOperates" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionAccruedLiabilitiesAssumedFairValueDisclosure" xlink:label="loc_hcp_BusinessAcquisitionAccruedLiabilitiesAssumedFairValueDisclosure" xlink:title="BusinessAcquisitionAccruedLiabilitiesAssumedFairValueDisclosure" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferredAbstract" xlink:to="loc_hcp_BusinessAcquisitionAccruedLiabilitiesAssumedFairValueDisclosure" xlink:title="Definition : loc_us-gaap_BusinessCombinationConsiderationTransferredAbstract to loc_hcp_BusinessAcquisitionAccruedLiabilitiesAssumedFairValueDisclosure" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xlink:label="loc_hcp_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xlink:title="BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:to="loc_hcp_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract to loc_hcp_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_WriteOffOfDeferredDebtIssuanceCost" xlink:label="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost" xlink:title="WriteOffOfDeferredDebtIssuanceCost" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_BusinessAcquisitionOtherDisclosuresAbstract" xlink:to="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost" xlink:title="Definition : loc_hcp_BusinessAcquisitionOtherDisclosuresAbstract to loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionsProFormaNetIncomeLossAttributableToParent" xlink:label="loc_hcp_BusinessAcquisitionsProFormaNetIncomeLossAttributableToParent" xlink:title="BusinessAcquisitionsProFormaNetIncomeLossAttributableToParent" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:to="loc_hcp_BusinessAcquisitionsProFormaNetIncomeLossAttributableToParent" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract to loc_hcp_BusinessAcquisitionsProFormaNetIncomeLossAttributableToParent" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionEquityInterestAcquiredThroughExerciseOfOption" xlink:label="loc_hcp_BusinessAcquisitionEquityInterestAcquiredThroughExerciseOfOption" xlink:title="BusinessAcquisitionEquityInterestAcquiredThroughExerciseOfOption" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_BusinessAcquisitionEquityInterestAcquiredThroughExerciseOfOption" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_BusinessAcquisitionEquityInterestAcquiredThroughExerciseOfOption" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceExcludingDirectCosts" xlink:label="loc_hcp_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceExcludingDirectCosts" xlink:title="BusinessAcquisitionCostOfAcquiredEntityPurchasePriceExcludingDirectCosts" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferredAbstract" xlink:to="loc_hcp_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceExcludingDirectCosts" xlink:title="Definition : loc_us-gaap_BusinessCombinationConsiderationTransferredAbstract to loc_hcp_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceExcludingDirectCosts" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual" xlink:title="BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_BusinessAcquisitionOtherDisclosuresAbstract" xlink:to="loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual" xlink:title="Definition : loc_hcp_BusinessAcquisitionOtherDisclosuresAbstract to loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic" xlink:label="loc_us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic" xlink:title="BusinessAcquisitionProFormaEarningsPerShareBasic" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:to="loc_us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract to loc_us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts" xlink:label="loc_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts" xlink:title="BusinessAcquisitionCostOfAcquiredEntityTransactionCosts" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferredAbstract" xlink:to="loc_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts" xlink:title="Definition : loc_us-gaap_BusinessCombinationConsiderationTransferredAbstract to loc_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted" xlink:label="loc_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted" xlink:title="BusinessAcquisitionProFormaEarningsPerShareDiluted" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:to="loc_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract to loc_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted" xlink:type="arc" use="optional" order="5" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredAbstract" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_BusinessCombinationConsiderationTransferredAbstract" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionGainLossOnSettlementOfLoanInvestments" xlink:label="loc_hcp_BusinessAcquisitionGainLossOnSettlementOfLoanInvestments" xlink:title="BusinessAcquisitionGainLossOnSettlementOfLoanInvestments" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferredAbstract" xlink:to="loc_hcp_BusinessAcquisitionGainLossOnSettlementOfLoanInvestments" xlink:title="Definition : loc_us-gaap_BusinessCombinationConsiderationTransferredAbstract to loc_hcp_BusinessAcquisitionGainLossOnSettlementOfLoanInvestments" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionCostOfAcquiredEntityGeneralAdministrativeTransactionCosts" xlink:label="loc_hcp_BusinessAcquisitionCostOfAcquiredEntityGeneralAdministrativeTransactionCosts" xlink:title="BusinessAcquisitionCostOfAcquiredEntityGeneralAdministrativeTransactionCosts" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_BusinessAcquisitionCostOfAcquiredEntityGeneralAdministrativeTransactionCosts" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_BusinessAcquisitionCostOfAcquiredEntityGeneralAdministrativeTransactionCosts" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionCostOfAcquiredEntityInterestExpenseTransactionCosts" xlink:label="loc_hcp_BusinessAcquisitionCostOfAcquiredEntityInterestExpenseTransactionCosts" xlink:title="BusinessAcquisitionCostOfAcquiredEntityInterestExpenseTransactionCosts" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_BusinessAcquisitionCostOfAcquiredEntityInterestExpenseTransactionCosts" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_BusinessAcquisitionCostOfAcquiredEntityInterestExpenseTransactionCosts" xlink:type="arc" use="optional" order="8" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract" xlink:type="arc" use="optional" order="9" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_BusinessAcquisitionOtherDisclosuresAbstract" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_BusinessAcquisitionOtherDisclosuresAbstract" xlink:type="arc" use="optional" order="10" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:type="arc" use="optional" order="11" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionAccruedTaxAndOtherLiabilitiesAssumedFairValueDisclosure" xlink:label="loc_hcp_BusinessAcquisitionAccruedTaxAndOtherLiabilitiesAssumedFairValueDisclosure" xlink:title="BusinessAcquisitionAccruedTaxAndOtherLiabilitiesAssumedFairValueDisclosure" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferredAbstract" xlink:to="loc_hcp_BusinessAcquisitionAccruedTaxAndOtherLiabilitiesAssumedFairValueDisclosure" xlink:title="Definition : loc_us-gaap_BusinessCombinationConsiderationTransferredAbstract to loc_hcp_BusinessAcquisitionAccruedTaxAndOtherLiabilitiesAssumedFairValueDisclosure" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionPurchasePriceAllocationOtherReceivables" xlink:label="loc_hcp_BusinessAcquisitionPurchasePriceAllocationOtherReceivables" xlink:title="BusinessAcquisitionPurchasePriceAllocationOtherReceivables" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:to="loc_hcp_BusinessAcquisitionPurchasePriceAllocationOtherReceivables" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract to loc_hcp_BusinessAcquisitionPurchasePriceAllocationOtherReceivables" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionPurchasePriceAllocationInterestAndPenaltiesOnMortgageLoans" xlink:label="loc_hcp_BusinessAcquisitionPurchasePriceAllocationInterestAndPenaltiesOnMortgageLoans" xlink:title="BusinessAcquisitionPurchasePriceAllocationInterestAndPenaltiesOnMortgageLoans" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:to="loc_hcp_BusinessAcquisitionPurchasePriceAllocationInterestAndPenaltiesOnMortgageLoans" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract to loc_hcp_BusinessAcquisitionPurchasePriceAllocationInterestAndPenaltiesOnMortgageLoans" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EstimatedFeesAndCostsAbstract" xlink:label="loc_hcp_EstimatedFeesAndCostsAbstract" xlink:title="EstimatedFeesAndCostsAbstract" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_EstimatedFeesAndCostsAbstract" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_EstimatedFeesAndCostsAbstract" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionAdvisoryFees" xlink:label="loc_hcp_BusinessAcquisitionAdvisoryFees" xlink:title="BusinessAcquisitionAdvisoryFees" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_EstimatedFeesAndCostsAbstract" xlink:to="loc_hcp_BusinessAcquisitionAdvisoryFees" xlink:title="Definition : loc_hcp_EstimatedFeesAndCostsAbstract to loc_hcp_BusinessAcquisitionAdvisoryFees" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionPurchasePriceAllocationMezzanineLoans" xlink:label="loc_hcp_BusinessAcquisitionPurchasePriceAllocationMezzanineLoans" xlink:title="BusinessAcquisitionPurchasePriceAllocationMezzanineLoans" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:to="loc_hcp_BusinessAcquisitionPurchasePriceAllocationMezzanineLoans" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract to loc_hcp_BusinessAcquisitionPurchasePriceAllocationMezzanineLoans" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BridgeLoanCommitmentsReduced" xlink:label="loc_hcp_BridgeLoanCommitmentsReduced" xlink:title="BridgeLoanCommitmentsReduced" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_BridgeLoanCommitmentsReduced" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_BridgeLoanCommitmentsReduced" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionPurchasePriceAllocationInterestAndPenaltiesOnMezzanineLoans" xlink:label="loc_hcp_BusinessAcquisitionPurchasePriceAllocationInterestAndPenaltiesOnMezzanineLoans" xlink:title="BusinessAcquisitionPurchasePriceAllocationInterestAndPenaltiesOnMezzanineLoans" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:to="loc_hcp_BusinessAcquisitionPurchasePriceAllocationInterestAndPenaltiesOnMezzanineLoans" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract to loc_hcp_BusinessAcquisitionPurchasePriceAllocationInterestAndPenaltiesOnMezzanineLoans" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ProposedBusinessAcquisitionCostOfAcquiredEntityLoansReceivableParValueReinvested" xlink:label="loc_hcp_ProposedBusinessAcquisitionCostOfAcquiredEntityLoansReceivableParValueReinvested" xlink:title="ProposedBusinessAcquisitionCostOfAcquiredEntityLoansReceivableParValueReinvested" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_ProposedBusinessAcquisitionCostOfAcquiredEntityLoansReceivableParValueReinvested" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_ProposedBusinessAcquisitionCostOfAcquiredEntityLoansReceivableParValueReinvested" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionPurchasePriceAllocationFairValueAdjustmentOfMortgageAndMezzanineLoans" xlink:label="loc_hcp_BusinessAcquisitionPurchasePriceAllocationFairValueAdjustmentOfMortgageAndMezzanineLoans" xlink:title="BusinessAcquisitionPurchasePriceAllocationFairValueAdjustmentOfMortgageAndMezzanineLoans" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:to="loc_hcp_BusinessAcquisitionPurchasePriceAllocationFairValueAdjustmentOfMortgageAndMezzanineLoans" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract to loc_hcp_BusinessAcquisitionPurchasePriceAllocationFairValueAdjustmentOfMortgageAndMezzanineLoans" xlink:type="arc" use="optional" order="8003" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ProposedBusinessAcquisitionCostOfAcquiredEntityCommonStockIssuableNumber" xlink:label="loc_hcp_ProposedBusinessAcquisitionCostOfAcquiredEntityCommonStockIssuableNumber" xlink:title="ProposedBusinessAcquisitionCostOfAcquiredEntityCommonStockIssuableNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_ProposedBusinessAcquisitionCostOfAcquiredEntityCommonStockIssuableNumber" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_ProposedBusinessAcquisitionCostOfAcquiredEntityCommonStockIssuableNumber" xlink:type="arc" use="optional" order="8003" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionPurchasePriceAllocationUncertainTaxPositionLiabilities" xlink:label="loc_hcp_BusinessAcquisitionPurchasePriceAllocationUncertainTaxPositionLiabilities" xlink:title="BusinessAcquisitionPurchasePriceAllocationUncertainTaxPositionLiabilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:to="loc_hcp_BusinessAcquisitionPurchasePriceAllocationUncertainTaxPositionLiabilities" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract to loc_hcp_BusinessAcquisitionPurchasePriceAllocationUncertainTaxPositionLiabilities" xlink:type="arc" use="optional" order="8004" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ProposedBusinessAcquisitionCostOfAcquiredEntityCashRequiredToPay" xlink:label="loc_hcp_ProposedBusinessAcquisitionCostOfAcquiredEntityCashRequiredToPay" xlink:title="ProposedBusinessAcquisitionCostOfAcquiredEntityCashRequiredToPay" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_ProposedBusinessAcquisitionCostOfAcquiredEntityCashRequiredToPay" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_ProposedBusinessAcquisitionCostOfAcquiredEntityCashRequiredToPay" xlink:type="arc" use="optional" order="8004" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionPurchasePriceAllocationTaxesPayable" xlink:label="loc_hcp_BusinessAcquisitionPurchasePriceAllocationTaxesPayable" xlink:title="BusinessAcquisitionPurchasePriceAllocationTaxesPayable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:to="loc_hcp_BusinessAcquisitionPurchasePriceAllocationTaxesPayable" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract to loc_hcp_BusinessAcquisitionPurchasePriceAllocationTaxesPayable" xlink:type="arc" use="optional" order="8005" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ProposedBusinessAcquisitionCostOfAcquiredEntityCommonStockIssuableValue" xlink:label="loc_hcp_ProposedBusinessAcquisitionCostOfAcquiredEntityCommonStockIssuableValue" xlink:title="ProposedBusinessAcquisitionCostOfAcquiredEntityCommonStockIssuableValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_ProposedBusinessAcquisitionCostOfAcquiredEntityCommonStockIssuableValue" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_ProposedBusinessAcquisitionCostOfAcquiredEntityCommonStockIssuableValue" xlink:type="arc" use="optional" order="8005" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:type="arc" use="optional" order="8006" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureCompensationPlansDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:title="ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis" xlink:title="RangeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember" xlink:title="RangeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis" xlink:to="loc_us-gaap_RangeMember" xlink:title="Definition : loc_us-gaap_RangeAxis to loc_us-gaap_RangeMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis" xlink:title="PlanNameAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain" xlink:title="PlanNameDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis" xlink:to="loc_us-gaap_PlanNameDomain" xlink:title="Definition : loc_us-gaap_PlanNameAxis to loc_us-gaap_PlanNameDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis" xlink:title="AwardTypeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:title="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:title="Definition : loc_us-gaap_AwardTypeAxis to loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember" xlink:title="MinimumMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember" xlink:to="loc_us-gaap_MinimumMember" xlink:title="Definition : loc_us-gaap_RangeMember to loc_us-gaap_MinimumMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_StockBasedCompensation2006IncentivePlanMember" xlink:label="loc_hcp_StockBasedCompensation2006IncentivePlanMember" xlink:title="StockBasedCompensation2006IncentivePlanMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain" xlink:to="loc_hcp_StockBasedCompensation2006IncentivePlanMember" xlink:title="Definition : loc_us-gaap_PlanNameDomain to loc_hcp_StockBasedCompensation2006IncentivePlanMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember" xlink:title="EmployeeStockOptionMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_us-gaap_EmployeeStockOptionMember" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain to loc_us-gaap_EmployeeStockOptionMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="loc_us-gaap_PlanNameAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable to loc_us-gaap_PlanNameAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="PlanNameDomain_1" xlink:title="PlanNameDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis" xlink:to="PlanNameDomain_1" xlink:title="Definition : loc_us-gaap_PlanNameAxis to loc_us-gaap_PlanNameDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2" xlink:title="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis" xlink:to="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2" xlink:title="Definition : loc_us-gaap_AwardTypeAxis to loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember" xlink:title="MaximumMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember" xlink:to="loc_us-gaap_MaximumMember" xlink:title="Definition : loc_us-gaap_RangeMember to loc_us-gaap_MaximumMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="loc_us-gaap_AwardTypeAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable to loc_us-gaap_AwardTypeAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:type="arc" use="optional" order="3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="loc_us-gaap_RangeAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable to loc_us-gaap_RangeAxis" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantAsRestrictedStockAndPerformanceRestrictedStockUnits" xlink:label="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantAsRestrictedStockAndPerformanceRestrictedStockUnits" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantAsRestrictedStockAndPerformanceRestrictedStockUnits" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantAsRestrictedStockAndPerformanceRestrictedStockUnits" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantAsRestrictedStockAndPerformanceRestrictedStockUnits" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense" xlink:title="AllocatedShareBasedCompensationExpense" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to loc_us-gaap_AllocatedShareBasedCompensationExpense" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:title="EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:title="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward to loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:title="EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:title="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward to loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:type="arc" use="optional" order="8" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:title="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward to loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward to loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:type="arc" use="optional" order="11" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward to loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:type="arc" use="optional" order="12" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:type="arc" use="optional" order="13" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward to loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:type="arc" use="optional" order="14" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ShareBasedCompensationByShareBasedPaymentAwardSharesWithheldForObligationsTowardExerciseOfShares" xlink:label="loc_hcp_ShareBasedCompensationByShareBasedPaymentAwardSharesWithheldForObligationsTowardExerciseOfShares" xlink:title="ShareBasedCompensationByShareBasedPaymentAwardSharesWithheldForObligationsTowardExerciseOfShares" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="loc_hcp_ShareBasedCompensationByShareBasedPaymentAwardSharesWithheldForObligationsTowardExerciseOfShares" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to loc_hcp_ShareBasedCompensationByShareBasedPaymentAwardSharesWithheldForObligationsTowardExerciseOfShares" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ShareBasedCompensationByShareBasedPaymentAwardValueOfSharesWithheldToOffsetTaxWithholdingObligations" xlink:label="loc_hcp_ShareBasedCompensationByShareBasedPaymentAwardValueOfSharesWithheldToOffsetTaxWithholdingObligations" xlink:title="ShareBasedCompensationByShareBasedPaymentAwardValueOfSharesWithheldToOffsetTaxWithholdingObligations" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="loc_hcp_ShareBasedCompensationByShareBasedPaymentAwardValueOfSharesWithheldToOffsetTaxWithholdingObligations" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to loc_hcp_ShareBasedCompensationByShareBasedPaymentAwardValueOfSharesWithheldToOffsetTaxWithholdingObligations" xlink:type="arc" use="optional" order="8002" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureCompensationPlansDetails2">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:title="ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis" xlink:title="RangeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember" xlink:title="RangeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis" xlink:to="loc_us-gaap_RangeMember" xlink:title="Definition : loc_us-gaap_RangeAxis to loc_us-gaap_RangeMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TitleOfIndividualAxis" xlink:label="loc_us-gaap_TitleOfIndividualAxis" xlink:title="TitleOfIndividualAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:title="TitleOfIndividualWithRelationshipToEntityDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TitleOfIndividualAxis" xlink:to="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:title="Definition : loc_us-gaap_TitleOfIndividualAxis to loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis" xlink:title="PlanNameAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain" xlink:title="PlanNameDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis" xlink:to="loc_us-gaap_PlanNameDomain" xlink:title="Definition : loc_us-gaap_PlanNameAxis to loc_us-gaap_PlanNameDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis" xlink:title="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:title="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis to loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember" xlink:title="MinimumMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember" xlink:to="loc_us-gaap_MinimumMember" xlink:title="Definition : loc_us-gaap_RangeMember to loc_us-gaap_MinimumMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ChiefExecutiveOfficerMember" xlink:label="loc_us-gaap_ChiefExecutiveOfficerMember" xlink:title="ChiefExecutiveOfficerMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:to="loc_us-gaap_ChiefExecutiveOfficerMember" xlink:title="Definition : loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain to loc_us-gaap_ChiefExecutiveOfficerMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_StockBasedCompensation2006IncentivePlanMember" xlink:label="loc_hcp_StockBasedCompensation2006IncentivePlanMember" xlink:title="StockBasedCompensation2006IncentivePlanMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain" xlink:to="loc_hcp_StockBasedCompensation2006IncentivePlanMember" xlink:title="Definition : loc_us-gaap_PlanNameDomain to loc_hcp_StockBasedCompensation2006IncentivePlanMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember" xlink:title="EmployeeStockOptionMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_StockBasedCompensation2006IncentivePlanMember" xlink:to="loc_us-gaap_EmployeeStockOptionMember" xlink:title="Definition : loc_hcp_StockBasedCompensation2006IncentivePlanMember to loc_us-gaap_EmployeeStockOptionMember" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RestrictedStockAndRestrictedStockUnitMember" xlink:label="loc_hcp_RestrictedStockAndRestrictedStockUnitMember" xlink:title="RestrictedStockAndRestrictedStockUnitMember" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="loc_us-gaap_RestrictedStockMember" xlink:title="RestrictedStockMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_RestrictedStockAndRestrictedStockUnitMember" xlink:to="loc_us-gaap_RestrictedStockMember" xlink:title="Definition : loc_hcp_RestrictedStockAndRestrictedStockUnitMember to loc_us-gaap_RestrictedStockMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RangeOfExercisePrice23.34To25.52Member" xlink:label="loc_hcp_RangeOfExercisePrice23.34To25.52Member" xlink:title="RangeOfExercisePrice23.34To25.52Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:to="loc_hcp_RangeOfExercisePrice23.34To25.52Member" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain to loc_hcp_RangeOfExercisePrice23.34To25.52Member" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:label="loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:title="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit" xlink:title="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit" xlink:title="Definition : loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract to loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward" xlink:label="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedOutstandingNumber" xlink:label="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedOutstandingNumber" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedOutstandingNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward" xlink:to="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedOutstandingNumber" xlink:title="Definition : loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward to loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedOutstandingNumber" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodTotalIntrinsicValue" xlink:label="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodTotalIntrinsicValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodTotalIntrinsicValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:to="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodTotalIntrinsicValue" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract to loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodTotalIntrinsicValue" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityPeriod" xlink:label="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityPeriod" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:to="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityPeriod" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract to loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityPeriod" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestructuringChargesAbstract" xlink:label="loc_us-gaap_RestructuringChargesAbstract" xlink:title="RestructuringChargesAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SeveranceCosts1" xlink:label="loc_us-gaap_SeveranceCosts1" xlink:title="SeveranceCosts1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringChargesAbstract" xlink:to="loc_us-gaap_SeveranceCosts1" xlink:title="Definition : loc_us-gaap_RestructuringChargesAbstract to loc_us-gaap_SeveranceCosts1" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract" xlink:label="loc_us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract" xlink:title="DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DefinedContributionPlanMatchingContributionMaximumPercentage" xlink:label="loc_hcp_DefinedContributionPlanMatchingContributionMaximumPercentage" xlink:title="DefinedContributionPlanMatchingContributionMaximumPercentage" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract" xlink:to="loc_hcp_DefinedContributionPlanMatchingContributionMaximumPercentage" xlink:title="Definition : loc_us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract to loc_hcp_DefinedContributionPlanMatchingContributionMaximumPercentage" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable to loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="TitleOfIndividualWithRelationshipToEntityDomain_1" xlink:title="TitleOfIndividualWithRelationshipToEntityDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TitleOfIndividualAxis" xlink:to="TitleOfIndividualWithRelationshipToEntityDomain_1" xlink:title="Definition : loc_us-gaap_TitleOfIndividualAxis to loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:label="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_2" xlink:title="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis" xlink:to="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_2" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis to loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:type="arc" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember" xlink:title="MaximumMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember" xlink:to="loc_us-gaap_MaximumMember" xlink:title="Definition : loc_us-gaap_RangeMember to loc_us-gaap_MaximumMember" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain" xlink:to="loc_hcp_RestrictedStockAndRestrictedStockUnitMember" xlink:title="Definition : loc_us-gaap_PlanNameDomain to loc_hcp_RestrictedStockAndRestrictedStockUnitMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember" xlink:title="RestrictedStockUnitsRSUMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_RestrictedStockAndRestrictedStockUnitMember" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember" xlink:title="Definition : loc_hcp_RestrictedStockAndRestrictedStockUnitMember to loc_us-gaap_RestrictedStockUnitsRSUMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RangeOfExercisePrice27.11To28.35Member" xlink:label="loc_hcp_RangeOfExercisePrice27.11To28.35Member" xlink:title="RangeOfExercisePrice27.11To28.35Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:to="loc_hcp_RangeOfExercisePrice27.11To28.35Member" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain to loc_hcp_RangeOfExercisePrice27.11To28.35Member" xlink:type="arc" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit" xlink:title="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit" xlink:title="Definition : loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract to loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:title="Definition : loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedIntrinsicValue" xlink:label="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedIntrinsicValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedIntrinsicValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:to="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedIntrinsicValue" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract to loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedIntrinsicValue" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardConversionRatio" xlink:label="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardConversionRatio" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardConversionRatio" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xlink:to="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardConversionRatio" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract to loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardConversionRatio" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringChargesAbstract" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost" xlink:title="Definition : loc_us-gaap_RestructuringChargesAbstract to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DefinedContributionPlanCostRecognized" xlink:label="loc_us-gaap_DefinedContributionPlanCostRecognized" xlink:title="DefinedContributionPlanCostRecognized" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract" xlink:to="loc_us-gaap_DefinedContributionPlanCostRecognized" xlink:title="Definition : loc_us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract to loc_us-gaap_DefinedContributionPlanCostRecognized" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="loc_us-gaap_PlanNameAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable to loc_us-gaap_PlanNameAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RangeOfExercisePrice31.95To46.92Member" xlink:label="loc_hcp_RangeOfExercisePrice31.95To46.92Member" xlink:title="RangeOfExercisePrice31.95To46.92Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:to="loc_hcp_RangeOfExercisePrice31.95To46.92Member" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain to loc_hcp_RangeOfExercisePrice31.95To46.92Member" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions" xlink:title="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions" xlink:title="Definition : loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract to loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriod" xlink:label="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriod" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward" xlink:to="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriod" xlink:title="Definition : loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward to loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriod" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions" xlink:title="EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract to loc_us-gaap_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract to loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ShareBasedCompensationByShareBasedPaymentAwardSharesWithheldToOffsetTaxWithholdingObligations" xlink:label="loc_hcp_ShareBasedCompensationByShareBasedPaymentAwardSharesWithheldToOffsetTaxWithholdingObligations" xlink:title="ShareBasedCompensationByShareBasedPaymentAwardSharesWithheldToOffsetTaxWithholdingObligations" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xlink:to="loc_hcp_ShareBasedCompensationByShareBasedPaymentAwardSharesWithheldToOffsetTaxWithholdingObligations" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract to loc_hcp_ShareBasedCompensationByShareBasedPaymentAwardSharesWithheldToOffsetTaxWithholdingObligations" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeverancePaymentsAndOtherCosts" xlink:label="loc_hcp_SeverancePaymentsAndOtherCosts" xlink:title="SeverancePaymentsAndOtherCosts" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringChargesAbstract" xlink:to="loc_hcp_SeverancePaymentsAndOtherCosts" xlink:title="Definition : loc_us-gaap_RestructuringChargesAbstract to loc_hcp_SeverancePaymentsAndOtherCosts" xlink:type="arc" use="optional" order="3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="loc_us-gaap_TitleOfIndividualAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable to loc_us-gaap_TitleOfIndividualAxis" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1" xlink:label="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1" xlink:title="SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:to="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1" xlink:title="Definition : loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract to loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:title="Definition : loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:type="arc" use="optional" order="4" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="loc_us-gaap_RangeAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable to loc_us-gaap_RangeAxis" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2" xlink:label="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2" xlink:title="SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:to="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2" xlink:title="Definition : loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract to loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedWeightedAverageGrantDateFairValue" xlink:label="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedWeightedAverageGrantDateFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedWeightedAverageGrantDateFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward" xlink:to="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedWeightedAverageGrantDateFairValue" xlink:title="Definition : loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward to loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedWeightedAverageGrantDateFairValue" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions" xlink:title="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions" xlink:title="Definition : loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract to loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:title="Definition : loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:type="arc" use="optional" order="6" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1" xlink:label="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1" xlink:title="SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:to="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1" xlink:title="Definition : loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract to loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodWeightedAverageGrantDateFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward" xlink:to="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:title="Definition : loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward to loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:type="arc" use="optional" order="7" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:to="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward" xlink:title="Definition : loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract to loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedForfeituresInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedForfeituresInPeriodWeightedAverageGrantDateFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedForfeituresInPeriodWeightedAverageGrantDateFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward" xlink:to="loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedForfeituresInPeriodWeightedAverageGrantDateFairValue" xlink:title="Definition : loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedRollForward to loc_hcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedForfeituresInPeriodWeightedAverageGrantDateFairValue" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:type="arc" use="optional" order="8" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:title="Definition : loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:type="arc" use="optional" order="9" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:title="Definition : loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:type="arc" use="optional" order="10" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xlink:title="Definition : loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract to loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xlink:type="arc" use="optional" order="11" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:to="loc_us-gaap_RestructuringChargesAbstract" xlink:title="Definition : loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract to loc_us-gaap_RestructuringChargesAbstract" xlink:type="arc" use="optional" order="12" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract" xlink:to="loc_us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract" xlink:title="Definition : loc_hcp_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeAbstract to loc_us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract" xlink:type="arc" use="optional" order="13" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ChairmanAndChiefExecutiveOfficerMember" xlink:label="loc_hcp_ChairmanAndChiefExecutiveOfficerMember" xlink:title="ChairmanAndChiefExecutiveOfficerMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:to="loc_hcp_ChairmanAndChiefExecutiveOfficerMember" xlink:title="Definition : loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain to loc_hcp_ChairmanAndChiefExecutiveOfficerMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RangeOfExercisePrice31.95To39.72Member" xlink:label="loc_hcp_RangeOfExercisePrice31.95To39.72Member" xlink:title="RangeOfExercisePrice31.95To39.72Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:to="loc_hcp_RangeOfExercisePrice31.95To39.72Member" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain to loc_hcp_RangeOfExercisePrice31.95To39.72Member" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RangeOfExercisePrice31.95To41.64Member" xlink:label="loc_hcp_RangeOfExercisePrice31.95To41.64Member" xlink:title="RangeOfExercisePrice31.95To41.64Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:to="loc_hcp_RangeOfExercisePrice31.95To41.64Member" xlink:title="Definition : loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain to loc_hcp_RangeOfExercisePrice31.95To41.64Member" xlink:type="arc" use="optional" order="8001" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureRealEstatePropertyInvestmentsDetails2">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems" xlink:title="BusinessAcquisitionLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:title="ScheduleOfBusinessAcquisitionsByAcquisitionTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CounterpartyNameAxis" xlink:label="loc_us-gaap_CounterpartyNameAxis" xlink:title="CounterpartyNameAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:title="RepurchaseAgreementCounterpartyNameDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CounterpartyNameAxis" xlink:to="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:title="Definition : loc_us-gaap_CounterpartyNameAxis to loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:title="AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReceivableTypeDomain" xlink:label="loc_us-gaap_ReceivableTypeDomain" xlink:title="ReceivableTypeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:to="loc_us-gaap_ReceivableTypeDomain" xlink:title="Definition : loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis to loc_us-gaap_ReceivableTypeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis" xlink:title="RangeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember" xlink:title="RangeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis" xlink:to="loc_us-gaap_RangeMember" xlink:title="Definition : loc_us-gaap_RangeAxis to loc_us-gaap_RangeMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="BusinessAcquisitionAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="BusinessAcquisitionAcquireeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAxis to loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EmeritusMember" xlink:label="loc_hcp_EmeritusMember" xlink:title="EmeritusMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:to="loc_hcp_EmeritusMember" xlink:title="Definition : loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain to loc_hcp_EmeritusMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingMember" xlink:label="loc_hcp_SeniorHousingMember" xlink:title="SeniorHousingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageReceivablesMember" xlink:label="loc_us-gaap_MortgageReceivablesMember" xlink:title="MortgageReceivablesMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain" xlink:to="loc_us-gaap_MortgageReceivablesMember" xlink:title="Definition : loc_us-gaap_ReceivableTypeDomain to loc_us-gaap_MortgageReceivablesMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember" xlink:title="MinimumMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember" xlink:to="loc_us-gaap_MinimumMember" xlink:title="Definition : loc_us-gaap_RangeMember to loc_us-gaap_MinimumMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BlackstoneJVMember" xlink:label="loc_hcp_BlackstoneJVMember" xlink:title="BlackstoneJVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="loc_hcp_BlackstoneJVMember" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAcquireeDomain to loc_hcp_BlackstoneJVMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:label="loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:title="BusinessAcquisitionProFormaInformationAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionsProFormaRevenue" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaRevenue" xlink:title="BusinessAcquisitionsProFormaRevenue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaRevenue" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract to loc_us-gaap_BusinessAcquisitionsProFormaRevenue" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_BusinessAcquisitionAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="BusinessAcquisitionAcquireeDomain_1" xlink:title="BusinessAcquisitionAcquireeDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis" xlink:to="BusinessAcquisitionAcquireeDomain_1" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAxis to loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember" xlink:title="MaximumMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember" xlink:to="loc_us-gaap_MaximumMember" xlink:title="Definition : loc_us-gaap_RangeMember to loc_us-gaap_MaximumMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss" xlink:title="BusinessAcquisitionsProFormaNetIncomeLoss" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract to loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfLeases" xlink:label="loc_hcp_NumberOfLeases" xlink:title="NumberOfLeases" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfLeases" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfLeases" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionsProFormaNetIncomeLossAttributableToParent" xlink:label="loc_hcp_BusinessAcquisitionsProFormaNetIncomeLossAttributableToParent" xlink:title="BusinessAcquisitionsProFormaNetIncomeLossAttributableToParent" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:to="loc_hcp_BusinessAcquisitionsProFormaNetIncomeLossAttributableToParent" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract to loc_hcp_BusinessAcquisitionsProFormaNetIncomeLossAttributableToParent" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfPropertiesUnderTripleNetMasterLease" xlink:label="loc_hcp_NumberOfPropertiesUnderTripleNetMasterLease" xlink:title="NumberOfPropertiesUnderTripleNetMasterLease" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfPropertiesUnderTripleNetMasterLease" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfPropertiesUnderTripleNetMasterLease" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic" xlink:label="loc_us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic" xlink:title="BusinessAcquisitionProFormaEarningsPerShareBasic" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:to="loc_us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract to loc_us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NumberOfStatesInWhichEntityOperates" xlink:label="loc_us-gaap_NumberOfStatesInWhichEntityOperates" xlink:title="NumberOfStatesInWhichEntityOperates" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_NumberOfStatesInWhichEntityOperates" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_NumberOfStatesInWhichEntityOperates" xlink:type="arc" use="optional" order="4" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_RangeAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_RangeAxis" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted" xlink:label="loc_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted" xlink:title="BusinessAcquisitionProFormaEarningsPerShareDiluted" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:to="loc_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract to loc_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfUnitsAssistedLivingPercent" xlink:label="loc_hcp_NumberOfUnitsAssistedLivingPercent" xlink:title="NumberOfUnitsAssistedLivingPercent" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfUnitsAssistedLivingPercent" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfUnitsAssistedLivingPercent" xlink:type="arc" use="optional" order="5" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_CounterpartyNameAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_CounterpartyNameAxis" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfUnitsIndependentLivingPercent" xlink:label="loc_hcp_NumberOfUnitsIndependentLivingPercent" xlink:title="NumberOfUnitsIndependentLivingPercent" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfUnitsIndependentLivingPercent" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfUnitsIndependentLivingPercent" xlink:type="arc" use="optional" order="6" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfUnitsMemoryCarePercent" xlink:label="loc_hcp_NumberOfUnitsMemoryCarePercent" xlink:title="NumberOfUnitsMemoryCarePercent" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfUnitsMemoryCarePercent" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfUnitsMemoryCarePercent" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfUnitsSkilledNursingPercent" xlink:label="loc_hcp_NumberOfUnitsSkilledNursingPercent" xlink:title="NumberOfUnitsSkilledNursingPercent" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfUnitsSkilledNursingPercent" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfUnitsSkilledNursingPercent" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfCommunitiesThatAreStabilized" xlink:label="loc_hcp_NumberOfCommunitiesThatAreStabilized" xlink:title="NumberOfCommunitiesThatAreStabilized" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfCommunitiesThatAreStabilized" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfCommunitiesThatAreStabilized" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfCommunitiesCurrentlyLeaseUp" xlink:label="loc_hcp_NumberOfCommunitiesCurrentlyLeaseUp" xlink:title="NumberOfCommunitiesCurrentlyLeaseUp" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfCommunitiesCurrentlyLeaseUp" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfCommunitiesCurrentlyLeaseUp" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_AcquisitionNumberOfStages" xlink:label="loc_hcp_AcquisitionNumberOfStages" xlink:title="AcquisitionNumberOfStages" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_AcquisitionNumberOfStages" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_AcquisitionNumberOfStages" xlink:type="arc" use="optional" order="11" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionPurchasePriceAllocationIntangibleLiabilities" xlink:label="loc_hcp_BusinessAcquisitionPurchasePriceAllocationIntangibleLiabilities" xlink:title="BusinessAcquisitionPurchasePriceAllocationIntangibleLiabilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_BusinessAcquisitionPurchasePriceAllocationIntangibleLiabilities" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_BusinessAcquisitionPurchasePriceAllocationIntangibleLiabilities" xlink:type="arc" use="optional" order="12" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ResidentOccupancyPercentage" xlink:label="loc_hcp_ResidentOccupancyPercentage" xlink:title="ResidentOccupancyPercentage" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_ResidentOccupancyPercentage" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_ResidentOccupancyPercentage" xlink:type="arc" use="optional" order="13" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfTripleNetMasterLeases" xlink:label="loc_hcp_NumberOfTripleNetMasterLeases" xlink:title="NumberOfTripleNetMasterLeases" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfTripleNetMasterLeases" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfTripleNetMasterLeases" xlink:type="arc" use="optional" order="14" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OperatingLeasesBasisSpreadOnVariableCapRate" xlink:label="loc_hcp_OperatingLeasesBasisSpreadOnVariableCapRate" xlink:title="OperatingLeasesBasisSpreadOnVariableCapRate" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_OperatingLeasesBasisSpreadOnVariableCapRate" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_OperatingLeasesBasisSpreadOnVariableCapRate" xlink:type="arc" use="optional" order="15" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual" xlink:title="BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual" xlink:type="arc" use="optional" order="16" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual" xlink:title="BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual" xlink:type="arc" use="optional" order="17" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_AssetPoolsInitialAvailableTerm" xlink:label="loc_hcp_AssetPoolsInitialAvailableTerm" xlink:title="AssetPoolsInitialAvailableTerm" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_AssetPoolsInitialAvailableTerm" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_AssetPoolsInitialAvailableTerm" xlink:type="arc" use="optional" order="18" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfExtensionOptionsInMasterLeases" xlink:label="loc_hcp_NumberOfExtensionOptionsInMasterLeases" xlink:title="NumberOfExtensionOptionsInMasterLeases" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfExtensionOptionsInMasterLeases" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfExtensionOptionsInMasterLeases" xlink:type="arc" use="optional" order="19" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages" xlink:label="loc_us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages" xlink:title="MortgageLoansOnRealEstateFaceAmountOfMortgages" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages" xlink:type="arc" use="optional" order="20" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateMinimumInterestRateInRange" xlink:label="loc_us-gaap_MortgageLoansOnRealEstateMinimumInterestRateInRange" xlink:title="MortgageLoansOnRealEstateMinimumInterestRateInRange" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_MortgageLoansOnRealEstateMinimumInterestRateInRange" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_MortgageLoansOnRealEstateMinimumInterestRateInRange" xlink:type="arc" use="optional" order="21" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateMaximumInterestRateInRange" xlink:label="loc_us-gaap_MortgageLoansOnRealEstateMaximumInterestRateInRange" xlink:title="MortgageLoansOnRealEstateMaximumInterestRateInRange" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_MortgageLoansOnRealEstateMaximumInterestRateInRange" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_MortgageLoansOnRealEstateMaximumInterestRateInRange" xlink:type="arc" use="optional" order="22" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_BusinessAcquisitionProFormaInformationAbstract" xlink:type="arc" use="optional" order="23" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LifeScienceMedicalOfficeMember" xlink:label="loc_hcp_LifeScienceMedicalOfficeMember" xlink:title="LifeScienceMedicalOfficeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_LifeScienceMedicalOfficeMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_LifeScienceMedicalOfficeMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfFacilitiesPlacedIntoService" xlink:label="loc_hcp_NumberOfFacilitiesPlacedIntoService" xlink:title="NumberOfFacilitiesPlacedIntoService" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfFacilitiesPlacedIntoService" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfFacilitiesPlacedIntoService" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingLifeScienceAndMedicalOfficeMember" xlink:label="loc_hcp_SeniorHousingLifeScienceAndMedicalOfficeMember" xlink:title="SeniorHousingLifeScienceAndMedicalOfficeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingLifeScienceAndMedicalOfficeMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingLifeScienceAndMedicalOfficeMember" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred" xlink:title="BusinessCombinationConsiderationTransferredLiabilitiesIncurred" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NumberOfUnitsInRealEstateProperty" xlink:label="loc_us-gaap_NumberOfUnitsInRealEstateProperty" xlink:title="NumberOfUnitsInRealEstateProperty" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_NumberOfUnitsInRealEstateProperty" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_NumberOfUnitsInRealEstateProperty" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FacilitiesPlacedIntoOperationsCapacity" xlink:label="loc_hcp_FacilitiesPlacedIntoOperationsCapacity" xlink:title="FacilitiesPlacedIntoOperationsCapacity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_FacilitiesPlacedIntoOperationsCapacity" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_FacilitiesPlacedIntoOperationsCapacity" xlink:type="arc" use="optional" order="8003" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfUnitsInRealEstatePropertyAsPercent" xlink:label="loc_hcp_NumberOfUnitsInRealEstatePropertyAsPercent" xlink:title="NumberOfUnitsInRealEstatePropertyAsPercent" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfUnitsInRealEstatePropertyAsPercent" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfUnitsInRealEstatePropertyAsPercent" xlink:type="arc" use="optional" order="8004" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureEquityDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ClassOfStockLineItems" xlink:label="loc_us-gaap_ClassOfStockLineItems" xlink:title="ClassOfStockLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfStockByClassTable" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable" xlink:title="ScheduleOfStockByClassTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable" xlink:title="Definition : loc_us-gaap_ClassOfStockLineItems to loc_us-gaap_ScheduleOfStockByClassTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis" xlink:title="StatementEquityComponentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain" xlink:title="EquityComponentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis" xlink:to="loc_us-gaap_EquityComponentDomain" xlink:title="Definition : loc_us-gaap_StatementEquityComponentsAxis to loc_us-gaap_EquityComponentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember" xlink:title="CommonStockMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain" xlink:to="loc_us-gaap_CommonStockMember" xlink:title="Definition : loc_us-gaap_EquityComponentDomain to loc_us-gaap_CommonStockMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_IssuanceOfCommonStockAbstract" xlink:label="loc_hcp_IssuanceOfCommonStockAbstract" xlink:title="IssuanceOfCommonStockAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan" xlink:title="StockIssuedDuringPeriodSharesDividendReinvestmentPlan" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_IssuanceOfCommonStockAbstract" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan" xlink:title="Definition : loc_hcp_IssuanceOfCommonStockAbstract to loc_us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncontrollingInterestAbstract" xlink:label="loc_us-gaap_NoncontrollingInterestAbstract" xlink:title="NoncontrollingInterestAbstract" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DownReitUnitsOutstanding" xlink:label="loc_hcp_DownReitUnitsOutstanding" xlink:title="DownReitUnitsOutstanding" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoncontrollingInterestAbstract" xlink:to="loc_hcp_DownReitUnitsOutstanding" xlink:title="Definition : loc_us-gaap_NoncontrollingInterestAbstract to loc_hcp_DownReitUnitsOutstanding" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable" xlink:to="loc_us-gaap_StatementEquityComponentsAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfStockByClassTable to loc_us-gaap_StatementEquityComponentsAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:label="loc_us-gaap_NoncontrollingInterestMember" xlink:title="NoncontrollingInterestMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain" xlink:to="loc_us-gaap_NoncontrollingInterestMember" xlink:title="Definition : loc_us-gaap_EquityComponentDomain to loc_us-gaap_NoncontrollingInterestMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared" xlink:title="CommonStockDividendsPerShareDeclared" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared" xlink:title="Definition : loc_us-gaap_ClassOfStockLineItems to loc_us-gaap_CommonStockDividendsPerShareDeclared" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits" xlink:title="StockIssuedDuringPeriodSharesConversionOfUnits" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_IssuanceOfCommonStockAbstract" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits" xlink:title="Definition : loc_hcp_IssuanceOfCommonStockAbstract to loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfDownREITLLCs" xlink:label="loc_hcp_NumberOfDownREITLLCs" xlink:title="NumberOfDownREITLLCs" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoncontrollingInterestAbstract" xlink:to="loc_hcp_NumberOfDownREITLLCs" xlink:title="Definition : loc_us-gaap_NoncontrollingInterestAbstract to loc_hcp_NumberOfDownREITLLCs" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis" xlink:title="StatementClassOfStockAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable" xlink:to="loc_us-gaap_StatementClassOfStockAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfStockByClassTable to loc_us-gaap_StatementClassOfStockAxis" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems" xlink:to="loc_hcp_IssuanceOfCommonStockAbstract" xlink:title="Definition : loc_us-gaap_ClassOfStockLineItems to loc_hcp_IssuanceOfCommonStockAbstract" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_StockIssuedDuringPeriodSharesStockOptionsGrossExercised" xlink:label="loc_hcp_StockIssuedDuringPeriodSharesStockOptionsGrossExercised" xlink:title="StockIssuedDuringPeriodSharesStockOptionsGrossExercised" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_IssuanceOfCommonStockAbstract" xlink:to="loc_hcp_StockIssuedDuringPeriodSharesStockOptionsGrossExercised" xlink:title="Definition : loc_hcp_IssuanceOfCommonStockAbstract to loc_hcp_StockIssuedDuringPeriodSharesStockOptionsGrossExercised" xlink:type="arc" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinorityInterestInPreferredUnitHolders" xlink:label="loc_us-gaap_MinorityInterestInPreferredUnitHolders" xlink:title="MinorityInterestInPreferredUnitHolders" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoncontrollingInterestAbstract" xlink:to="loc_us-gaap_MinorityInterestInPreferredUnitHolders" xlink:title="Definition : loc_us-gaap_NoncontrollingInterestAbstract to loc_us-gaap_MinorityInterestInPreferredUnitHolders" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfStockByClassTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" xlink:title="StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_IssuanceOfCommonStockAbstract" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" xlink:title="Definition : loc_hcp_IssuanceOfCommonStockAbstract to loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" xlink:type="arc" use="optional" order="4" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems" xlink:to="loc_us-gaap_NoncontrollingInterestAbstract" xlink:title="Definition : loc_us-gaap_ClassOfStockLineItems to loc_us-gaap_NoncontrollingInterestAbstract" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MinorityInterestInPreferredUnitHoldersFairValue" xlink:label="loc_hcp_MinorityInterestInPreferredUnitHoldersFairValue" xlink:title="MinorityInterestInPreferredUnitHoldersFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoncontrollingInterestAbstract" xlink:to="loc_hcp_MinorityInterestInPreferredUnitHoldersFairValue" xlink:title="Definition : loc_us-gaap_NoncontrollingInterestAbstract to loc_hcp_MinorityInterestInPreferredUnitHoldersFairValue" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="BusinessAcquisitionAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable" xlink:to="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfStockByClassTable to loc_us-gaap_BusinessAcquisitionAxis" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="BusinessAcquisitionAcquireeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAxis to loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain" xlink:title="ClassOfStockDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis" xlink:to="loc_us-gaap_ClassOfStockDomain" xlink:title="Definition : loc_us-gaap_StatementClassOfStockAxis to loc_us-gaap_ClassOfStockDomain" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingMember" xlink:label="loc_hcp_SeniorHousingMember" xlink:title="SeniorHousingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BlackstoneJVMember" xlink:label="loc_hcp_BlackstoneJVMember" xlink:title="BlackstoneJVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="loc_hcp_BlackstoneJVMember" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAcquireeDomain to loc_hcp_BlackstoneJVMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockMember" xlink:label="loc_us-gaap_PreferredStockMember" xlink:title="PreferredStockMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain" xlink:to="loc_us-gaap_PreferredStockMember" xlink:title="Definition : loc_us-gaap_EquityComponentDomain to loc_us-gaap_PreferredStockMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeriesECumulativeRedeemablePreferredStockMember" xlink:label="loc_hcp_SeriesECumulativeRedeemablePreferredStockMember" xlink:title="SeriesECumulativeRedeemablePreferredStockMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain" xlink:to="loc_hcp_SeriesECumulativeRedeemablePreferredStockMember" xlink:title="Definition : loc_us-gaap_ClassOfStockDomain to loc_hcp_SeriesECumulativeRedeemablePreferredStockMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OrdinaryDividendsAmountPerShare" xlink:label="loc_hcp_OrdinaryDividendsAmountPerShare" xlink:title="OrdinaryDividendsAmountPerShare" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems" xlink:to="loc_hcp_OrdinaryDividendsAmountPerShare" xlink:title="Definition : loc_us-gaap_ClassOfStockLineItems to loc_hcp_OrdinaryDividendsAmountPerShare" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="ClassOfStockDomain_1" xlink:title="ClassOfStockDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis" xlink:to="ClassOfStockDomain_1" xlink:title="Definition : loc_us-gaap_StatementClassOfStockAxis to loc_us-gaap_ClassOfStockDomain" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeriesFCumulativeRedeemablePreferredStockMember" xlink:label="loc_hcp_SeriesFCumulativeRedeemablePreferredStockMember" xlink:title="SeriesFCumulativeRedeemablePreferredStockMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain" xlink:to="loc_hcp_SeriesFCumulativeRedeemablePreferredStockMember" xlink:title="Definition : loc_us-gaap_ClassOfStockDomain to loc_hcp_SeriesFCumulativeRedeemablePreferredStockMember" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CapitalGainDividendsAmountPerShare" xlink:label="loc_hcp_CapitalGainDividendsAmountPerShare" xlink:title="CapitalGainDividendsAmountPerShare" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems" xlink:to="loc_hcp_CapitalGainDividendsAmountPerShare" xlink:title="Definition : loc_us-gaap_ClassOfStockLineItems to loc_hcp_CapitalGainDividendsAmountPerShare" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NondividendDistributionsAmountPerShare" xlink:label="loc_hcp_NondividendDistributionsAmountPerShare" xlink:title="NondividendDistributionsAmountPerShare" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems" xlink:to="loc_hcp_NondividendDistributionsAmountPerShare" xlink:title="Definition : loc_us-gaap_ClassOfStockLineItems to loc_hcp_NondividendDistributionsAmountPerShare" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DividendsAmountPerShare" xlink:label="loc_hcp_DividendsAmountPerShare" xlink:title="DividendsAmountPerShare" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems" xlink:to="loc_hcp_DividendsAmountPerShare" xlink:title="Definition : loc_us-gaap_ClassOfStockLineItems to loc_hcp_DividendsAmountPerShare" xlink:type="arc" use="optional" order="8003" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:title="ProceedsFromIssuanceOfCommonStock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:title="Definition : loc_us-gaap_ClassOfStockLineItems to loc_us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:type="arc" use="optional" order="8004" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PreferredStockRedemptionShares" xlink:label="loc_hcp_PreferredStockRedemptionShares" xlink:title="PreferredStockRedemptionShares" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems" xlink:to="loc_hcp_PreferredStockRedemptionShares" xlink:title="Definition : loc_us-gaap_ClassOfStockLineItems to loc_hcp_PreferredStockRedemptionShares" xlink:type="arc" use="optional" order="8005" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockDividendRatePercentage" xlink:label="loc_us-gaap_PreferredStockDividendRatePercentage" xlink:title="PreferredStockDividendRatePercentage" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems" xlink:to="loc_us-gaap_PreferredStockDividendRatePercentage" xlink:title="Definition : loc_us-gaap_ClassOfStockLineItems to loc_us-gaap_PreferredStockDividendRatePercentage" xlink:type="arc" use="optional" order="8006" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockRedemptionPricePerShare" xlink:label="loc_us-gaap_PreferredStockRedemptionPricePerShare" xlink:title="PreferredStockRedemptionPricePerShare" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems" xlink:to="loc_us-gaap_PreferredStockRedemptionPricePerShare" xlink:title="Definition : loc_us-gaap_ClassOfStockLineItems to loc_us-gaap_PreferredStockRedemptionPricePerShare" xlink:type="arc" use="optional" order="8007" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_WriteOffOfDeferredStockIssuanceCost" xlink:label="loc_hcp_WriteOffOfDeferredStockIssuanceCost" xlink:title="WriteOffOfDeferredStockIssuanceCost" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems" xlink:to="loc_hcp_WriteOffOfDeferredStockIssuanceCost" xlink:title="Definition : loc_us-gaap_ClassOfStockLineItems to loc_hcp_WriteOffOfDeferredStockIssuanceCost" xlink:type="arc" use="optional" order="8008" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SaleOfStockPricePerShare" xlink:label="loc_us-gaap_SaleOfStockPricePerShare" xlink:title="SaleOfStockPricePerShare" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems" xlink:to="loc_us-gaap_SaleOfStockPricePerShare" xlink:title="Definition : loc_us-gaap_ClassOfStockLineItems to loc_us-gaap_SaleOfStockPricePerShare" xlink:type="arc" use="optional" order="8009" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureNetInvestmentInDirectFinancingLeasesDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems" xlink:title="BusinessAcquisitionLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:title="ScheduleOfBusinessAcquisitionsByAcquisitionTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis" xlink:title="RangeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember" xlink:title="RangeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis" xlink:to="loc_us-gaap_RangeMember" xlink:title="Definition : loc_us-gaap_RangeAxis to loc_us-gaap_RangeMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InternalCreditAssessmentAxis" xlink:label="loc_us-gaap_InternalCreditAssessmentAxis" xlink:title="InternalCreditAssessmentAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InternalCreditAssessmentDomain" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain" xlink:title="InternalCreditAssessmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain" xlink:title="Definition : loc_us-gaap_InternalCreditAssessmentAxis to loc_us-gaap_InternalCreditAssessmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentAxis" xlink:label="loc_invest_InvestmentAxis" xlink:title="InvestmentAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentDomain" xlink:label="loc_invest_InvestmentDomain" xlink:title="InvestmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_invest_InvestmentAxis" xlink:to="loc_invest_InvestmentDomain" xlink:title="Definition : loc_invest_InvestmentAxis to loc_invest_InvestmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="BusinessAcquisitionAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="BusinessAcquisitionAcquireeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAxis to loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingMember" xlink:label="loc_hcp_SeniorHousingMember" xlink:title="SeniorHousingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember" xlink:title="MinimumMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember" xlink:to="loc_us-gaap_MinimumMember" xlink:title="Definition : loc_us-gaap_RangeMember to loc_us-gaap_MinimumMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PerformingFinancingReceivableMember" xlink:label="loc_us-gaap_PerformingFinancingReceivableMember" xlink:title="PerformingFinancingReceivableMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain" xlink:to="loc_us-gaap_PerformingFinancingReceivableMember" xlink:title="Definition : loc_us-gaap_InternalCreditAssessmentDomain to loc_us-gaap_PerformingFinancingReceivableMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DFLPortfolioMember" xlink:label="loc_hcp_DFLPortfolioMember" xlink:title="DFLPortfolioMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_invest_InvestmentDomain" xlink:to="loc_hcp_DFLPortfolioMember" xlink:title="Definition : loc_invest_InvestmentDomain to loc_hcp_DFLPortfolioMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCRManorCareIncMember" xlink:label="loc_hcp_HCRManorCareIncMember" xlink:title="HCRManorCareIncMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="loc_hcp_HCRManorCareIncMember" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAcquireeDomain to loc_hcp_HCRManorCareIncMember" xlink:type="arc" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_BusinessAcquisitionAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InternalCreditAssessmentDomain" xlink:label="InternalCreditAssessmentDomain_1" xlink:title="InternalCreditAssessmentDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis" xlink:to="InternalCreditAssessmentDomain_1" xlink:title="Definition : loc_us-gaap_InternalCreditAssessmentAxis to loc_us-gaap_InternalCreditAssessmentDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentDomain" xlink:label="InvestmentDomain_2" xlink:title="InvestmentDomain_2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_invest_InvestmentAxis" xlink:to="InvestmentDomain_2" xlink:title="Definition : loc_invest_InvestmentAxis to loc_invest_InvestmentDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PostAcuteAndSkilledNursingMember" xlink:label="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="PostAcuteAndSkilledNursingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_PostAcuteAndSkilledNursingMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember" xlink:title="MaximumMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember" xlink:to="loc_us-gaap_MaximumMember" xlink:title="Definition : loc_us-gaap_RangeMember to loc_us-gaap_MaximumMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_WatchListFinancingReceivableMember" xlink:label="loc_hcp_WatchListFinancingReceivableMember" xlink:title="WatchListFinancingReceivableMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain" xlink:to="loc_hcp_WatchListFinancingReceivableMember" xlink:title="Definition : loc_us-gaap_InternalCreditAssessmentDomain to loc_hcp_WatchListFinancingReceivableMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived" xlink:label="loc_us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived" xlink:title="CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HospitalMember" xlink:label="loc_hcp_HospitalMember" xlink:title="HospitalMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_HospitalMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_HospitalMember" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesIncomeStatementMinimumLeaseRevenue" xlink:label="loc_us-gaap_OperatingLeasesIncomeStatementMinimumLeaseRevenue" xlink:title="OperatingLeasesIncomeStatementMinimumLeaseRevenue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_OperatingLeasesIncomeStatementMinimumLeaseRevenue" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_OperatingLeasesIncomeStatementMinimumLeaseRevenue" xlink:type="arc" use="optional" order="3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_InternalCreditAssessmentAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_InternalCreditAssessmentAxis" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MinimumLeaseRevenueRateOfIncreasePerYearSpecifiedTerm" xlink:label="loc_hcp_MinimumLeaseRevenueRateOfIncreasePerYearSpecifiedTerm" xlink:title="MinimumLeaseRevenueRateOfIncreasePerYearSpecifiedTerm" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_MinimumLeaseRevenueRateOfIncreasePerYearSpecifiedTerm" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_MinimumLeaseRevenueRateOfIncreasePerYearSpecifiedTerm" xlink:type="arc" use="optional" order="4" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_invest_InvestmentAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_invest_InvestmentAxis" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MinimumLeaseRevenueRateOfIncreaseSpecifiedTerm" xlink:label="loc_hcp_MinimumLeaseRevenueRateOfIncreaseSpecifiedTerm" xlink:title="MinimumLeaseRevenueRateOfIncreaseSpecifiedTerm" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_MinimumLeaseRevenueRateOfIncreaseSpecifiedTerm" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_MinimumLeaseRevenueRateOfIncreaseSpecifiedTerm" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CounterpartyNameAxis" xlink:label="loc_us-gaap_CounterpartyNameAxis" xlink:title="CounterpartyNameAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_CounterpartyNameAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_CounterpartyNameAxis" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MinimumLeaseRevenueRateOfIncreasePerYearForRemainingYearsOfLeaseTerm" xlink:label="loc_hcp_MinimumLeaseRevenueRateOfIncreasePerYearForRemainingYearsOfLeaseTerm" xlink:title="MinimumLeaseRevenueRateOfIncreasePerYearForRemainingYearsOfLeaseTerm" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_MinimumLeaseRevenueRateOfIncreasePerYearForRemainingYearsOfLeaseTerm" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_MinimumLeaseRevenueRateOfIncreasePerYearForRemainingYearsOfLeaseTerm" xlink:type="arc" use="optional" order="6" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_RangeAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_RangeAxis" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfAssetPools" xlink:label="loc_hcp_NumberOfAssetPools" xlink:title="NumberOfAssetPools" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfAssetPools" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfAssetPools" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MinimumLeaseRevenueRateOfIncreaseInRentReceivableForFirstYearOfExtensionOption" xlink:label="loc_hcp_MinimumLeaseRevenueRateOfIncreaseInRentReceivableForFirstYearOfExtensionOption" xlink:title="MinimumLeaseRevenueRateOfIncreaseInRentReceivableForFirstYearOfExtensionOption" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_MinimumLeaseRevenueRateOfIncreaseInRentReceivableForFirstYearOfExtensionOption" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_MinimumLeaseRevenueRateOfIncreaseInRentReceivableForFirstYearOfExtensionOption" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_AssetPoolsTotalAvailableTerm" xlink:label="loc_hcp_AssetPoolsTotalAvailableTerm" xlink:title="AssetPoolsTotalAvailableTerm" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_AssetPoolsTotalAvailableTerm" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_AssetPoolsTotalAvailableTerm" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesUnguaranteedResidualValuesOfLeasedProperty" xlink:label="loc_us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesUnguaranteedResidualValuesOfLeasedProperty" xlink:title="CapitalLeasesNetInvestmentInDirectFinancingLeasesUnguaranteedResidualValuesOfLeasedProperty" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesUnguaranteedResidualValuesOfLeasedProperty" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesUnguaranteedResidualValuesOfLeasedProperty" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesDeferredIncome" xlink:label="loc_us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesDeferredIncome" xlink:title="CapitalLeasesNetInvestmentInDirectFinancingLeasesDeferredIncome" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesDeferredIncome" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesDeferredIncome" xlink:type="arc" use="optional" order="11" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetInvestmentInDirectFinancingAndSalesTypeLeases" xlink:label="loc_us-gaap_NetInvestmentInDirectFinancingAndSalesTypeLeases" xlink:title="NetInvestmentInDirectFinancingAndSalesTypeLeases" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_NetInvestmentInDirectFinancingAndSalesTypeLeases" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_NetInvestmentInDirectFinancingAndSalesTypeLeases" xlink:type="arc" use="optional" order="12" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NetInvestmentInDirectFinancingAndSalesTypeLeasesAsPercentage" xlink:label="loc_hcp_NetInvestmentInDirectFinancingAndSalesTypeLeasesAsPercentage" xlink:title="NetInvestmentInDirectFinancingAndSalesTypeLeasesAsPercentage" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NetInvestmentInDirectFinancingAndSalesTypeLeasesAsPercentage" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NetInvestmentInDirectFinancingAndSalesTypeLeasesAsPercentage" xlink:type="arc" use="optional" order="13" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PropertiesWithDirectFinancingLeasesNumber" xlink:label="loc_hcp_PropertiesWithDirectFinancingLeasesNumber" xlink:title="PropertiesWithDirectFinancingLeasesNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_PropertiesWithDirectFinancingLeasesNumber" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_PropertiesWithDirectFinancingLeasesNumber" xlink:type="arc" use="optional" order="14" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CapitalLeasesIncomeStatementDirectFinancingLeaseRevenue" xlink:label="loc_us-gaap_CapitalLeasesIncomeStatementDirectFinancingLeaseRevenue" xlink:title="CapitalLeasesIncomeStatementDirectFinancingLeaseRevenue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_CapitalLeasesIncomeStatementDirectFinancingLeaseRevenue" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_CapitalLeasesIncomeStatementDirectFinancingLeaseRevenue" xlink:type="arc" use="optional" order="15" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CapitalLeasesProceedsFromDirectFinancingLeaseRevenue" xlink:label="loc_hcp_CapitalLeasesProceedsFromDirectFinancingLeaseRevenue" xlink:title="CapitalLeasesProceedsFromDirectFinancingLeaseRevenue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_CapitalLeasesProceedsFromDirectFinancingLeaseRevenue" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_CapitalLeasesProceedsFromDirectFinancingLeaseRevenue" xlink:type="arc" use="optional" order="16" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:title="RepurchaseAgreementCounterpartyNameDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CounterpartyNameAxis" xlink:to="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:title="Definition : loc_us-gaap_CounterpartyNameAxis to loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfLeases" xlink:label="loc_hcp_NumberOfLeases" xlink:title="NumberOfLeases" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfLeases" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfLeases" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_TenetHealthcareCorporationMember" xlink:label="loc_hcp_TenetHealthcareCorporationMember" xlink:title="TenetHealthcareCorporationMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:to="loc_hcp_TenetHealthcareCorporationMember" xlink:title="Definition : loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain to loc_hcp_TenetHealthcareCorporationMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RealEstateLeaseTerm" xlink:label="loc_hcp_RealEstateLeaseTerm" xlink:title="RealEstateLeaseTerm" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_RealEstateLeaseTerm" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_RealEstateLeaseTerm" xlink:type="arc" use="optional" order="8001" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureDebtDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems" xlink:title="DebtInstrumentLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable" xlink:title="DebtInstrumentTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_DebtInstrumentTable" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_DebtInstrumentTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis" xlink:title="RangeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember" xlink:title="RangeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis" xlink:to="loc_us-gaap_RangeMember" xlink:title="Definition : loc_us-gaap_RangeAxis to loc_us-gaap_RangeMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis" xlink:title="DebtInstrumentAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain" xlink:title="DebtInstrumentNameDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis" xlink:to="loc_us-gaap_DebtInstrumentNameDomain" xlink:title="Definition : loc_us-gaap_DebtInstrumentAxis to loc_us-gaap_DebtInstrumentNameDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeByNatureAxis" xlink:label="loc_us-gaap_DerivativeByNatureAxis" xlink:title="DerivativeByNatureAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain" xlink:title="DerivativeContractTypeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeByNatureAxis" xlink:to="loc_us-gaap_DerivativeContractTypeDomain" xlink:title="Definition : loc_us-gaap_DerivativeByNatureAxis to loc_us-gaap_DerivativeContractTypeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UnsecuredDebtMember" xlink:label="loc_us-gaap_UnsecuredDebtMember" xlink:title="UnsecuredDebtMember" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_UnsecuredDebt4.20PercentDue2024Member" xlink:label="loc_hcp_UnsecuredDebt4.20PercentDue2024Member" xlink:title="UnsecuredDebt4.20PercentDue2024Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredDebtMember" xlink:to="loc_hcp_UnsecuredDebt4.20PercentDue2024Member" xlink:title="Definition : loc_us-gaap_UnsecuredDebtMember to loc_hcp_UnsecuredDebt4.20PercentDue2024Member" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember" xlink:title="MinimumMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember" xlink:to="loc_us-gaap_MinimumMember" xlink:title="Definition : loc_us-gaap_RangeMember to loc_us-gaap_MinimumMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LineOfCreditAndTermLoanMember" xlink:label="loc_hcp_LineOfCreditAndTermLoanMember" xlink:title="LineOfCreditAndTermLoanMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain" xlink:to="loc_hcp_LineOfCreditAndTermLoanMember" xlink:title="Definition : loc_us-gaap_DebtInstrumentNameDomain to loc_hcp_LineOfCreditAndTermLoanMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditMember" xlink:label="loc_us-gaap_LineOfCreditMember" xlink:title="LineOfCreditMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_LineOfCreditAndTermLoanMember" xlink:to="loc_us-gaap_LineOfCreditMember" xlink:title="Definition : loc_hcp_LineOfCreditAndTermLoanMember to loc_us-gaap_LineOfCreditMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:label="loc_us-gaap_InterestRateSwapMember" xlink:title="InterestRateSwapMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain" xlink:to="loc_us-gaap_InterestRateSwapMember" xlink:title="Definition : loc_us-gaap_DerivativeContractTypeDomain to loc_us-gaap_InterestRateSwapMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable" xlink:to="loc_us-gaap_DebtInstrumentAxis" xlink:title="Definition : loc_us-gaap_DebtInstrumentTable to loc_us-gaap_DebtInstrumentAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeMember" xlink:label="RangeMember_1" xlink:title="RangeMember_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis" xlink:to="RangeMember_1" xlink:title="Definition : loc_us-gaap_RangeAxis to loc_us-gaap_RangeMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="DebtInstrumentNameDomain_2" xlink:title="DebtInstrumentNameDomain_2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis" xlink:to="DebtInstrumentNameDomain_2" xlink:title="Definition : loc_us-gaap_DebtInstrumentAxis to loc_us-gaap_DebtInstrumentNameDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorUnsecuredDebt2.7PercentMember" xlink:label="loc_hcp_SeniorUnsecuredDebt2.7PercentMember" xlink:title="SeniorUnsecuredDebt2.7PercentMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredDebtMember" xlink:to="loc_hcp_SeniorUnsecuredDebt2.7PercentMember" xlink:title="Definition : loc_us-gaap_UnsecuredDebtMember to loc_hcp_SeniorUnsecuredDebt2.7PercentMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember" xlink:title="MaximumMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember" xlink:to="loc_us-gaap_MaximumMember" xlink:title="Definition : loc_us-gaap_RangeMember to loc_us-gaap_MaximumMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_TermLoan2012Member" xlink:label="loc_hcp_TermLoan2012Member" xlink:title="TermLoan2012Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_LineOfCreditAndTermLoanMember" xlink:to="loc_hcp_TermLoan2012Member" xlink:title="Definition : loc_hcp_LineOfCreditAndTermLoanMember to loc_hcp_TermLoan2012Member" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain" xlink:to="loc_us-gaap_UnsecuredDebtMember" xlink:title="Definition : loc_us-gaap_DebtInstrumentNameDomain to loc_us-gaap_UnsecuredDebtMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LineOfCreditFacilityIncreasedMaximumBorrowingCapacity" xlink:label="loc_hcp_LineOfCreditFacilityIncreasedMaximumBorrowingCapacity" xlink:title="LineOfCreditFacilityIncreasedMaximumBorrowingCapacity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_hcp_LineOfCreditFacilityIncreasedMaximumBorrowingCapacity" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_hcp_LineOfCreditFacilityIncreasedMaximumBorrowingCapacity" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable" xlink:to="loc_us-gaap_DerivativeByNatureAxis" xlink:title="Definition : loc_us-gaap_DebtInstrumentTable to loc_us-gaap_DerivativeByNatureAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorUnsecuredDebt5.65PercentMember" xlink:label="loc_hcp_SeniorUnsecuredDebt5.65PercentMember" xlink:title="SeniorUnsecuredDebt5.65PercentMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredDebtMember" xlink:to="loc_hcp_SeniorUnsecuredDebt5.65PercentMember" xlink:title="Definition : loc_us-gaap_UnsecuredDebtMember to loc_hcp_SeniorUnsecuredDebt5.65PercentMember" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SecuredDebtMember" xlink:label="loc_us-gaap_SecuredDebtMember" xlink:title="SecuredDebtMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain" xlink:to="loc_us-gaap_SecuredDebtMember" xlink:title="Definition : loc_us-gaap_DebtInstrumentNameDomain to loc_us-gaap_SecuredDebtMember" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:title="LineOfCreditFacilityMaximumBorrowingCapacity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:title="DebtInstrumentRedemptionPeriodAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:title="Definition : loc_us-gaap_DebtInstrumentTable to loc_us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_UnsecuredDebt4.25PercentDue2023Member" xlink:label="loc_hcp_UnsecuredDebt4.25PercentDue2023Member" xlink:title="UnsecuredDebt4.25PercentDue2023Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredDebtMember" xlink:to="loc_hcp_UnsecuredDebt4.25PercentDue2023Member" xlink:title="Definition : loc_us-gaap_UnsecuredDebtMember to loc_hcp_UnsecuredDebt4.25PercentDue2023Member" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OtherBorrowingsMember" xlink:label="loc_hcp_OtherBorrowingsMember" xlink:title="OtherBorrowingsMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain" xlink:to="loc_hcp_OtherBorrowingsMember" xlink:title="Definition : loc_us-gaap_DebtInstrumentNameDomain to loc_hcp_OtherBorrowingsMember" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentPeriodOfExtension" xlink:label="loc_hcp_DebtInstrumentPeriodOfExtension" xlink:title="DebtInstrumentPeriodOfExtension" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_hcp_DebtInstrumentPeriodOfExtension" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_hcp_DebtInstrumentPeriodOfExtension" xlink:type="arc" use="optional" order="4" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable" xlink:to="loc_us-gaap_RangeAxis" xlink:title="Definition : loc_us-gaap_DebtInstrumentTable to loc_us-gaap_RangeAxis" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_UnsecuredDebt5.625PercentMember" xlink:label="loc_hcp_UnsecuredDebt5.625PercentMember" xlink:title="UnsecuredDebt5.625PercentMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredDebtMember" xlink:to="loc_hcp_UnsecuredDebt5.625PercentMember" xlink:title="Definition : loc_us-gaap_UnsecuredDebtMember to loc_hcp_UnsecuredDebt5.625PercentMember" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentDescriptionOfVariableRateBasis" xlink:label="loc_us-gaap_DebtInstrumentDescriptionOfVariableRateBasis" xlink:title="DebtInstrumentDescriptionOfVariableRateBasis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_DebtInstrumentDescriptionOfVariableRateBasis" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_DebtInstrumentDescriptionOfVariableRateBasis" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:title="DebtInstrumentBasisSpreadOnVariableRate1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage" xlink:title="LineOfCreditFacilityCommitmentFeePercentage" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LineOfCreditFacilityAdditionalAvailableBorrowingCapacityMaximum" xlink:label="loc_hcp_LineOfCreditFacilityAdditionalAvailableBorrowingCapacityMaximum" xlink:title="LineOfCreditFacilityAdditionalAvailableBorrowingCapacityMaximum" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_hcp_LineOfCreditFacilityAdditionalAvailableBorrowingCapacityMaximum" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_hcp_LineOfCreditFacilityAdditionalAvailableBorrowingCapacityMaximum" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityAmountOutstanding" xlink:label="loc_us-gaap_LineOfCreditFacilityAmountOutstanding" xlink:title="LineOfCreditFacilityAmountOutstanding" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_LineOfCreditFacilityAmountOutstanding" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_LineOfCreditFacilityAmountOutstanding" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentCovenantDebtToAssets" xlink:label="loc_hcp_DebtInstrumentCovenantDebtToAssets" xlink:title="DebtInstrumentCovenantDebtToAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_hcp_DebtInstrumentCovenantDebtToAssets" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_hcp_DebtInstrumentCovenantDebtToAssets" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentCovenantSecuredDebtToAssets" xlink:label="loc_hcp_DebtInstrumentCovenantSecuredDebtToAssets" xlink:title="DebtInstrumentCovenantSecuredDebtToAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_hcp_DebtInstrumentCovenantSecuredDebtToAssets" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_hcp_DebtInstrumentCovenantSecuredDebtToAssets" xlink:type="arc" use="optional" order="11" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentCovenantUnsecuredDebtToUnencumberedAssets" xlink:label="loc_hcp_DebtInstrumentCovenantUnsecuredDebtToUnencumberedAssets" xlink:title="DebtInstrumentCovenantUnsecuredDebtToUnencumberedAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_hcp_DebtInstrumentCovenantUnsecuredDebtToUnencumberedAssets" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_hcp_DebtInstrumentCovenantUnsecuredDebtToUnencumberedAssets" xlink:type="arc" use="optional" order="12" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentCovenantFixedChargeRatioMinimum" xlink:label="loc_hcp_DebtInstrumentCovenantFixedChargeRatioMinimum" xlink:title="DebtInstrumentCovenantFixedChargeRatioMinimum" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_hcp_DebtInstrumentCovenantFixedChargeRatioMinimum" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_hcp_DebtInstrumentCovenantFixedChargeRatioMinimum" xlink:type="arc" use="optional" order="13" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentCovenantNetWorth" xlink:label="loc_hcp_DebtInstrumentCovenantNetWorth" xlink:title="DebtInstrumentCovenantNetWorth" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_hcp_DebtInstrumentCovenantNetWorth" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_hcp_DebtInstrumentCovenantNetWorth" xlink:type="arc" use="optional" order="14" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:title="DebtInstrumentInterestRateEffectivePercentage" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:type="arc" use="optional" order="15" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtWeightedAverageInterestRate" xlink:label="loc_us-gaap_DebtWeightedAverageInterestRate" xlink:title="DebtWeightedAverageInterestRate" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_DebtWeightedAverageInterestRate" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_DebtWeightedAverageInterestRate" xlink:type="arc" use="optional" order="16" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentWeightedAverageMaturity" xlink:label="loc_hcp_DebtInstrumentWeightedAverageMaturity" xlink:title="DebtInstrumentWeightedAverageMaturity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_hcp_DebtInstrumentWeightedAverageMaturity" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_hcp_DebtInstrumentWeightedAverageMaturity" xlink:type="arc" use="optional" order="17" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount" xlink:title="DebtInstrumentFaceAmount" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_DebtInstrumentFaceAmount" xlink:type="arc" use="optional" order="18" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentIssuancePricePercentageOfPrincipalAmount" xlink:label="loc_hcp_DebtInstrumentIssuancePricePercentageOfPrincipalAmount" xlink:title="DebtInstrumentIssuancePricePercentageOfPrincipalAmount" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_hcp_DebtInstrumentIssuancePricePercentageOfPrincipalAmount" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_hcp_DebtInstrumentIssuancePricePercentageOfPrincipalAmount" xlink:type="arc" use="optional" order="19" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RepaymentsOfSeniorDebt" xlink:label="loc_us-gaap_RepaymentsOfSeniorDebt" xlink:title="RepaymentsOfSeniorDebt" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_RepaymentsOfSeniorDebt" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_RepaymentsOfSeniorDebt" xlink:type="arc" use="optional" order="20" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:title="ProceedsFromIssuanceOfLongTermDebt" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:type="arc" use="optional" order="21" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:title="DebtInstrumentInterestRateStatedPercentage" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:type="arc" use="optional" order="22" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear" xlink:type="arc" use="optional" order="23" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:type="arc" use="optional" order="24" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:type="arc" use="optional" order="25" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:type="arc" use="optional" order="26" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:type="arc" use="optional" order="27" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:type="arc" use="optional" order="28" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount" xlink:title="DebtInstrumentCarryingAmount" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_DebtInstrumentCarryingAmount" xlink:type="arc" use="optional" order="29" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet" xlink:title="DebtInstrumentUnamortizedDiscountPremiumNet" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet" xlink:type="arc" use="optional" order="30" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt" xlink:title="LongTermDebt" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_LongTermDebt" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_LongTermDebt" xlink:type="arc" use="optional" order="31" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentCollateralHealthcareFacilitiesNumber" xlink:label="loc_hcp_DebtInstrumentCollateralHealthcareFacilitiesNumber" xlink:title="DebtInstrumentCollateralHealthcareFacilitiesNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_hcp_DebtInstrumentCollateralHealthcareFacilitiesNumber" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_hcp_DebtInstrumentCollateralHealthcareFacilitiesNumber" xlink:type="arc" use="optional" order="32" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentCollateralHealthcareFacilitiesCarryingValue" xlink:label="loc_hcp_DebtInstrumentCollateralHealthcareFacilitiesCarryingValue" xlink:title="DebtInstrumentCollateralHealthcareFacilitiesCarryingValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_hcp_DebtInstrumentCollateralHealthcareFacilitiesCarryingValue" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_hcp_DebtInstrumentCollateralHealthcareFacilitiesCarryingValue" xlink:type="arc" use="optional" order="33" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:label="loc_us-gaap_DebtInstrumentTerm" xlink:title="DebtInstrumentTerm" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_DebtInstrumentTerm" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_DebtInstrumentTerm" xlink:type="arc" use="optional" order="34" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DerivativeInstrumentMaturityTerm" xlink:label="loc_hcp_DerivativeInstrumentMaturityTerm" xlink:title="DerivativeInstrumentMaturityTerm" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_hcp_DerivativeInstrumentMaturityTerm" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_hcp_DerivativeInstrumentMaturityTerm" xlink:type="arc" use="optional" order="35" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeFixedInterestRate" xlink:label="loc_us-gaap_DerivativeFixedInterestRate" xlink:title="DerivativeFixedInterestRate" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_DerivativeFixedInterestRate" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_DerivativeFixedInterestRate" xlink:type="arc" use="optional" order="36" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherBorrowings" xlink:label="loc_us-gaap_OtherBorrowings" xlink:title="OtherBorrowings" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_OtherBorrowings" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_OtherBorrowings" xlink:type="arc" use="optional" order="37" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FacilityIssuingLifeCareBondNumber" xlink:label="loc_hcp_FacilityIssuingLifeCareBondNumber" xlink:title="FacilityIssuingLifeCareBondNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_hcp_FacilityIssuingLifeCareBondNumber" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_hcp_FacilityIssuingLifeCareBondNumber" xlink:type="arc" use="optional" order="38" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NonInterestBearingOccupancyFeeDepositNumber" xlink:label="loc_hcp_NonInterestBearingOccupancyFeeDepositNumber" xlink:title="NonInterestBearingOccupancyFeeDepositNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_hcp_NonInterestBearingOccupancyFeeDepositNumber" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_hcp_NonInterestBearingOccupancyFeeDepositNumber" xlink:type="arc" use="optional" order="39" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:title="DebtInstrumentRedemptionPeriodDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:title="Definition : loc_us-gaap_DebtInstrumentRedemptionPeriodAxis to loc_us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_UnsecuredDebt4.82PercentDue2011Member" xlink:label="loc_hcp_UnsecuredDebt4.82PercentDue2011Member" xlink:title="UnsecuredDebt4.82PercentDue2011Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredDebtMember" xlink:to="loc_hcp_UnsecuredDebt4.82PercentDue2011Member" xlink:title="Definition : loc_us-gaap_UnsecuredDebtMember to loc_hcp_UnsecuredDebt4.82PercentDue2011Member" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodOneMember" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodOneMember" xlink:title="DebtInstrumentRedemptionPeriodOneMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodOneMember" xlink:title="Definition : loc_us-gaap_DebtInstrumentRedemptionPeriodDomain to loc_us-gaap_DebtInstrumentRedemptionPeriodOneMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="DebtInstrumentRedemptionPeriodDomain_3" xlink:title="DebtInstrumentRedemptionPeriodDomain_3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:to="DebtInstrumentRedemptionPeriodDomain_3" xlink:title="Definition : loc_us-gaap_DebtInstrumentRedemptionPeriodAxis to loc_us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_UnsecuredDebt2.7PercentDue2014Member" xlink:label="loc_hcp_UnsecuredDebt2.7PercentDue2014Member" xlink:title="UnsecuredDebt2.7PercentDue2014Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredDebtMember" xlink:to="loc_hcp_UnsecuredDebt2.7PercentDue2014Member" xlink:title="Definition : loc_us-gaap_UnsecuredDebtMember to loc_hcp_UnsecuredDebt2.7PercentDue2014Member" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodTwoMember" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodTwoMember" xlink:title="DebtInstrumentRedemptionPeriodTwoMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodTwoMember" xlink:title="Definition : loc_us-gaap_DebtInstrumentRedemptionPeriodDomain to loc_us-gaap_DebtInstrumentRedemptionPeriodTwoMember" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_UnsecuredDebt3.75PercentDue2016Member" xlink:label="loc_hcp_UnsecuredDebt3.75PercentDue2016Member" xlink:title="UnsecuredDebt3.75PercentDue2016Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredDebtMember" xlink:to="loc_hcp_UnsecuredDebt3.75PercentDue2016Member" xlink:title="Definition : loc_us-gaap_UnsecuredDebtMember to loc_hcp_UnsecuredDebt3.75PercentDue2016Member" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodThreeMember" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodThreeMember" xlink:title="DebtInstrumentRedemptionPeriodThreeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodThreeMember" xlink:title="Definition : loc_us-gaap_DebtInstrumentRedemptionPeriodDomain to loc_us-gaap_DebtInstrumentRedemptionPeriodThreeMember" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_UnsecuredDebt5.375PercentDue2021Member" xlink:label="loc_hcp_UnsecuredDebt5.375PercentDue2021Member" xlink:title="UnsecuredDebt5.375PercentDue2021Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredDebtMember" xlink:to="loc_hcp_UnsecuredDebt5.375PercentDue2021Member" xlink:title="Definition : loc_us-gaap_UnsecuredDebtMember to loc_hcp_UnsecuredDebt5.375PercentDue2021Member" xlink:type="arc" use="optional" order="8003" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodFourMember" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodFourMember" xlink:title="DebtInstrumentRedemptionPeriodFourMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodFourMember" xlink:title="Definition : loc_us-gaap_DebtInstrumentRedemptionPeriodDomain to loc_us-gaap_DebtInstrumentRedemptionPeriodFourMember" xlink:type="arc" use="optional" order="8003" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_UnsecuredDebt6.75PercentDue2041Member" xlink:label="loc_hcp_UnsecuredDebt6.75PercentDue2041Member" xlink:title="UnsecuredDebt6.75PercentDue2041Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredDebtMember" xlink:to="loc_hcp_UnsecuredDebt6.75PercentDue2041Member" xlink:title="Definition : loc_us-gaap_UnsecuredDebtMember to loc_hcp_UnsecuredDebt6.75PercentDue2041Member" xlink:type="arc" use="optional" order="8004" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodFiveMember" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodFiveMember" xlink:title="DebtInstrumentRedemptionPeriodFiveMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodFiveMember" xlink:title="Definition : loc_us-gaap_DebtInstrumentRedemptionPeriodDomain to loc_us-gaap_DebtInstrumentRedemptionPeriodFiveMember" xlink:type="arc" use="optional" order="8004" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_UnsecuredDebt6.45PercentDue2012Member" xlink:label="loc_hcp_UnsecuredDebt6.45PercentDue2012Member" xlink:title="UnsecuredDebt6.45PercentDue2012Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredDebtMember" xlink:to="loc_hcp_UnsecuredDebt6.45PercentDue2012Member" xlink:title="Definition : loc_us-gaap_UnsecuredDebtMember to loc_hcp_UnsecuredDebt6.45PercentDue2012Member" xlink:type="arc" use="optional" order="8005" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentDue2019Member" xlink:label="loc_hcp_DebtInstrumentDue2019Member" xlink:title="DebtInstrumentDue2019Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:to="loc_hcp_DebtInstrumentDue2019Member" xlink:title="Definition : loc_us-gaap_DebtInstrumentRedemptionPeriodDomain to loc_hcp_DebtInstrumentDue2019Member" xlink:type="arc" use="optional" order="8005" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_UnsecuredDebt2.625PercentDue2020Member" xlink:label="loc_hcp_UnsecuredDebt2.625PercentDue2020Member" xlink:title="UnsecuredDebt2.625PercentDue2020Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredDebtMember" xlink:to="loc_hcp_UnsecuredDebt2.625PercentDue2020Member" xlink:title="Definition : loc_us-gaap_UnsecuredDebtMember to loc_hcp_UnsecuredDebt2.625PercentDue2020Member" xlink:type="arc" use="optional" order="8006" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentDue2020Member" xlink:label="loc_hcp_DebtInstrumentDue2020Member" xlink:title="DebtInstrumentDue2020Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:to="loc_hcp_DebtInstrumentDue2020Member" xlink:title="Definition : loc_us-gaap_DebtInstrumentRedemptionPeriodDomain to loc_hcp_DebtInstrumentDue2020Member" xlink:type="arc" use="optional" order="8006" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_UnsecuredDebt3.15PercentDue2022Member" xlink:label="loc_hcp_UnsecuredDebt3.15PercentDue2022Member" xlink:title="UnsecuredDebt3.15PercentDue2022Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredDebtMember" xlink:to="loc_hcp_UnsecuredDebt3.15PercentDue2022Member" xlink:title="Definition : loc_us-gaap_UnsecuredDebtMember to loc_hcp_UnsecuredDebt3.15PercentDue2022Member" xlink:type="arc" use="optional" order="8007" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentDue2021Member" xlink:label="loc_hcp_DebtInstrumentDue2021Member" xlink:title="DebtInstrumentDue2021Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:to="loc_hcp_DebtInstrumentDue2021Member" xlink:title="Definition : loc_us-gaap_DebtInstrumentRedemptionPeriodDomain to loc_hcp_DebtInstrumentDue2021Member" xlink:type="arc" use="optional" order="8007" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_UnsecuredDebt3.75PercentDue2019Member" xlink:label="loc_hcp_UnsecuredDebt3.75PercentDue2019Member" xlink:title="UnsecuredDebt3.75PercentDue2019Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredDebtMember" xlink:to="loc_hcp_UnsecuredDebt3.75PercentDue2019Member" xlink:title="Definition : loc_us-gaap_UnsecuredDebtMember to loc_hcp_UnsecuredDebt3.75PercentDue2019Member" xlink:type="arc" use="optional" order="8008" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentDue2022Member" xlink:label="loc_hcp_DebtInstrumentDue2022Member" xlink:title="DebtInstrumentDue2022Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:to="loc_hcp_DebtInstrumentDue2022Member" xlink:title="Definition : loc_us-gaap_DebtInstrumentRedemptionPeriodDomain to loc_hcp_DebtInstrumentDue2022Member" xlink:type="arc" use="optional" order="8008" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentDue2023Member" xlink:label="loc_hcp_DebtInstrumentDue2023Member" xlink:title="DebtInstrumentDue2023Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:to="loc_hcp_DebtInstrumentDue2023Member" xlink:title="Definition : loc_us-gaap_DebtInstrumentRedemptionPeriodDomain to loc_hcp_DebtInstrumentDue2023Member" xlink:type="arc" use="optional" order="8009" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentDue2041Member" xlink:label="loc_hcp_DebtInstrumentDue2041Member" xlink:title="DebtInstrumentDue2041Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:to="loc_hcp_DebtInstrumentDue2041Member" xlink:title="Definition : loc_us-gaap_DebtInstrumentRedemptionPeriodDomain to loc_hcp_DebtInstrumentDue2041Member" xlink:type="arc" use="optional" order="8010" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DebtInstrumentRedemptionPeriodThereafterMember" xlink:label="loc_hcp_DebtInstrumentRedemptionPeriodThereafterMember" xlink:title="DebtInstrumentRedemptionPeriodThereafterMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:to="loc_hcp_DebtInstrumentRedemptionPeriodThereafterMember" xlink:title="Definition : loc_us-gaap_DebtInstrumentRedemptionPeriodDomain to loc_hcp_DebtInstrumentRedemptionPeriodThereafterMember" xlink:type="arc" use="optional" order="8011" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureInvestmentsInAndAdvancesToUnconsolidatedJointVenturesDetails2">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems" xlink:title="BusinessAcquisitionLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:title="ScheduleOfBusinessAcquisitionsByAcquisitionTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="BusinessAcquisitionAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="BusinessAcquisitionAcquireeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAxis to loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCPVenturesIIMember" xlink:label="loc_hcp_HCPVenturesIIMember" xlink:title="HCPVenturesIIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="loc_hcp_HCPVenturesIIMember" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAcquireeDomain to loc_hcp_HCPVenturesIIMember" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EstimatedFeesAndCostsAbstract" xlink:label="loc_hcp_EstimatedFeesAndCostsAbstract" xlink:title="EstimatedFeesAndCostsAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts" xlink:label="loc_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts" xlink:title="BusinessAcquisitionCostOfAcquiredEntityTransactionCosts" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_EstimatedFeesAndCostsAbstract" xlink:to="loc_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts" xlink:title="Definition : loc_hcp_EstimatedFeesAndCostsAbstract to loc_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_BusinessAcquisitionAxis" xlink:type="arc" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesOther" xlink:label="loc_hcp_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesOther" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesOther" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:to="loc_hcp_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesOther" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract to loc_hcp_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesOther" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionCostOfAcquiredEntityDebtAssumptionFees" xlink:label="loc_hcp_BusinessAcquisitionCostOfAcquiredEntityDebtAssumptionFees" xlink:title="BusinessAcquisitionCostOfAcquiredEntityDebtAssumptionFees" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_EstimatedFeesAndCostsAbstract" xlink:to="loc_hcp_BusinessAcquisitionCostOfAcquiredEntityDebtAssumptionFees" xlink:title="Definition : loc_hcp_EstimatedFeesAndCostsAbstract to loc_hcp_BusinessAcquisitionCostOfAcquiredEntityDebtAssumptionFees" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombinationAbstract" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombinationAbstract" xlink:title="BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombinationAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure" xlink:title="InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombinationAbstract" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure" xlink:title="Definition : loc_us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombinationAbstract to loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionCostOfAcquiredEntityEstimatedFeesAndCosts" xlink:label="loc_hcp_BusinessAcquisitionCostOfAcquiredEntityEstimatedFeesAndCosts" xlink:title="BusinessAcquisitionCostOfAcquiredEntityEstimatedFeesAndCosts" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_EstimatedFeesAndCostsAbstract" xlink:to="loc_hcp_BusinessAcquisitionCostOfAcquiredEntityEstimatedFeesAndCosts" xlink:title="Definition : loc_hcp_EstimatedFeesAndCostsAbstract to loc_hcp_BusinessAcquisitionCostOfAcquiredEntityEstimatedFeesAndCosts" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfSeniorHousingFacilities" xlink:label="loc_hcp_NumberOfSeniorHousingFacilities" xlink:title="NumberOfSeniorHousingFacilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_NumberOfSeniorHousingFacilities" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_NumberOfSeniorHousingFacilities" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1" xlink:label="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1" xlink:title="BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombinationAbstract" xlink:to="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1" xlink:title="Definition : loc_us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombinationAbstract to loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionPurchasePriceAllocationRestrictedCash" xlink:label="loc_hcp_BusinessAcquisitionPurchasePriceAllocationRestrictedCash" xlink:title="BusinessAcquisitionPurchasePriceAllocationRestrictedCash" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:to="loc_hcp_BusinessAcquisitionPurchasePriceAllocationRestrictedCash" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract to loc_hcp_BusinessAcquisitionPurchasePriceAllocationRestrictedCash" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage" xlink:label="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage" xlink:title="BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceExcludingDirectCosts" xlink:label="loc_hcp_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceExcludingDirectCosts" xlink:title="BusinessAcquisitionCostOfAcquiredEntityPurchasePriceExcludingDirectCosts" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombinationAbstract" xlink:to="loc_hcp_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceExcludingDirectCosts" xlink:title="Definition : loc_us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombinationAbstract to loc_hcp_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceExcludingDirectCosts" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xlink:label="loc_hcp_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xlink:title="BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:to="loc_hcp_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract to loc_hcp_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xlink:type="arc" use="optional" order="5" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombinationAbstract" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombinationAbstract" xlink:type="arc" use="optional" order="5" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombinationAbstract" xlink:to="loc_hcp_EstimatedFeesAndCostsAbstract" xlink:title="Definition : loc_us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombinationAbstract to loc_hcp_EstimatedFeesAndCostsAbstract" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:title="Definition : loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_GainLossUponConsolidationOfJointVenture" xlink:label="loc_hcp_GainLossUponConsolidationOfJointVenture" xlink:title="GainLossUponConsolidationOfJointVenture" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_GainLossUponConsolidationOfJointVenture" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_GainLossUponConsolidationOfJointVenture" xlink:type="arc" use="optional" order="6" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BusinessAcquisitionDebtAssumedParValue" xlink:label="loc_hcp_BusinessAcquisitionDebtAssumedParValue" xlink:title="BusinessAcquisitionDebtAssumedParValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_BusinessAcquisitionDebtAssumedParValue" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_BusinessAcquisitionDebtAssumedParValue" xlink:type="arc" use="optional" order="8000" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureMergersAndAcquisitionTables">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems" xlink:title="BusinessAcquisitionLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:title="ScheduleOfBusinessAcquisitionsByAcquisitionTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="BusinessAcquisitionAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="BusinessAcquisitionAcquireeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAxis to loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis" xlink:title="StatementScenarioAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementScenarioAxis" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain" xlink:title="Definition : loc_us-gaap_StatementScenarioAxis to loc_us-gaap_ScenarioUnspecifiedDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCRManorCareIncMember" xlink:label="loc_hcp_HCRManorCareIncMember" xlink:title="HCRManorCareIncMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="loc_hcp_HCRManorCareIncMember" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAcquireeDomain to loc_hcp_HCRManorCareIncMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_BusinessAcquisitionAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="loc_us-gaap_ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain" xlink:to="loc_us-gaap_ScenarioPreviouslyReportedMember" xlink:title="Definition : loc_us-gaap_ScenarioUnspecifiedDomain to loc_us-gaap_ScenarioPreviouslyReportedMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ScheduleOfBusinessCombinationConsiderationTransferredTableTextBlock" xlink:label="loc_hcp_ScheduleOfBusinessCombinationConsiderationTransferredTableTextBlock" xlink:title="ScheduleOfBusinessCombinationConsiderationTransferredTableTextBlock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_hcp_ScheduleOfBusinessCombinationConsiderationTransferredTableTextBlock" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_hcp_ScheduleOfBusinessCombinationConsiderationTransferredTableTextBlock" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_StatementScenarioAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_StatementScenarioAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:title="ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionProFormaInformationTextBlock" xlink:label="loc_us-gaap_BusinessAcquisitionProFormaInformationTextBlock" xlink:title="BusinessAcquisitionProFormaInformationTextBlock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_BusinessAcquisitionProFormaInformationTextBlock" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_BusinessAcquisitionProFormaInformationTextBlock" xlink:type="arc" use="optional" order="4" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureSelectedQuarterlyFinancialDataDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems" xlink:title="StatementLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable" xlink:title="StatementTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems" xlink:to="loc_us-gaap_StatementTable" xlink:title="Definition : loc_us-gaap_StatementLineItems to loc_us-gaap_StatementTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="BusinessAcquisitionAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="BusinessAcquisitionAcquireeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAxis to loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingMember" xlink:label="loc_hcp_SeniorHousingMember" xlink:title="SeniorHousingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BlackstoneJVMember" xlink:label="loc_hcp_BlackstoneJVMember" xlink:title="BlackstoneJVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="loc_hcp_BlackstoneJVMember" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAcquireeDomain to loc_hcp_BlackstoneJVMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable" xlink:to="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="Definition : loc_us-gaap_StatementTable to loc_us-gaap_BusinessAcquisitionAxis" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_us-gaap_StatementTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="2" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureSelectedQuarterlyFinancialDataDetails2">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:title="AccountsNotesAndLoansReceivableLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:title="ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:title="AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReceivableTypeDomain" xlink:label="loc_us-gaap_ReceivableTypeDomain" xlink:title="ReceivableTypeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:to="loc_us-gaap_ReceivableTypeDomain" xlink:title="Definition : loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis to loc_us-gaap_ReceivableTypeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BarchesterLoanMember" xlink:label="loc_hcp_BarchesterLoanMember" xlink:title="BarchesterLoanMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain" xlink:to="loc_hcp_BarchesterLoanMember" xlink:title="Definition : loc_us-gaap_ReceivableTypeDomain to loc_hcp_BarchesterLoanMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable to loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:type="arc" use="optional" order="1" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureTransactionsWithRelatedPartiesDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:title="RelatedPartyTransactionLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:title="ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis" xlink:title="LegalEntityAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain" xlink:title="EntityDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis" xlink:to="loc_dei_EntityDomain" xlink:title="Definition : loc_dei_LegalEntityAxis to loc_dei_EntityDomain" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:title="RelatedPartyTransactionsByRelatedPartyAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaap_RelatedPartyDomain" xlink:title="RelatedPartyDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="loc_us-gaap_RelatedPartyDomain" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis to loc_us-gaap_RelatedPartyDomain" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCPITennesseeLimitedLiabilityCompanyMember" xlink:label="loc_hcp_HCPITennesseeLimitedLiabilityCompanyMember" xlink:title="HCPITennesseeLimitedLiabilityCompanyMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain" xlink:to="loc_hcp_HCPITennesseeLimitedLiabilityCompanyMember" xlink:title="Definition : loc_dei_EntityDomain to loc_hcp_HCPITennesseeLimitedLiabilityCompanyMember" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ExecutiveVicePresidentKlaritchMember" xlink:label="loc_hcp_ExecutiveVicePresidentKlaritchMember" xlink:title="ExecutiveVicePresidentKlaritchMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain" xlink:to="loc_hcp_ExecutiveVicePresidentKlaritchMember" xlink:title="Definition : loc_us-gaap_RelatedPartyDomain to loc_hcp_ExecutiveVicePresidentKlaritchMember" xlink:type="arc" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable to loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="RelatedPartyDomain_1" xlink:title="RelatedPartyDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="RelatedPartyDomain_1" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis to loc_us-gaap_RelatedPartyDomain" xlink:type="arc" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfNonManagingMemberUnitsReceived" xlink:label="loc_hcp_NumberOfNonManagingMemberUnitsReceived" xlink:title="NumberOfNonManagingMemberUnitsReceived" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hcp_NumberOfNonManagingMemberUnitsReceived" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hcp_NumberOfNonManagingMemberUnitsReceived" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="loc_dei_LegalEntityAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable to loc_dei_LegalEntityAxis" xlink:type="arc" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedemptionOfDownREITUnitsInNumberOfShares" xlink:label="loc_hcp_RedemptionOfDownREITUnitsInNumberOfShares" xlink:title="RedemptionOfDownREITUnitsInNumberOfShares" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hcp_RedemptionOfDownREITUnitsInNumberOfShares" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hcp_RedemptionOfDownREITUnitsInNumberOfShares" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedemptionOfDownREITUnitsInCashEquivalentOfMarketValueOfEntitysCommonStock" xlink:label="loc_hcp_RedemptionOfDownREITUnitsInCashEquivalentOfMarketValueOfEntitysCommonStock" xlink:title="RedemptionOfDownREITUnitsInCashEquivalentOfMarketValueOfEntitysCommonStock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hcp_RedemptionOfDownREITUnitsInCashEquivalentOfMarketValueOfEntitysCommonStock" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hcp_RedemptionOfDownREITUnitsInCashEquivalentOfMarketValueOfEntitysCommonStock" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCAIncorporationMember" xlink:label="loc_hcp_HCAIncorporationMember" xlink:title="HCAIncorporationMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain" xlink:to="loc_hcp_HCAIncorporationMember" xlink:title="Definition : loc_dei_EntityDomain to loc_hcp_HCAIncorporationMember" xlink:type="arc" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ExecutiveVicePresidentElcanMember" xlink:label="loc_hcp_ExecutiveVicePresidentElcanMember" xlink:title="ExecutiveVicePresidentElcanMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain" xlink:to="loc_hcp_ExecutiveVicePresidentElcanMember" xlink:title="Definition : loc_us-gaap_RelatedPartyDomain to loc_hcp_ExecutiveVicePresidentElcanMember" xlink:type="arc" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RelatedPartyTransactionsMinimumPercentageOfOwnershipDirectlyOrIndirectlyOwned" xlink:label="loc_hcp_RelatedPartyTransactionsMinimumPercentageOfOwnershipDirectlyOrIndirectlyOwned" xlink:title="RelatedPartyTransactionsMinimumPercentageOfOwnershipDirectlyOrIndirectlyOwned" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hcp_RelatedPartyTransactionsMinimumPercentageOfOwnershipDirectlyOrIndirectlyOwned" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hcp_RelatedPartyTransactionsMinimumPercentageOfOwnershipDirectlyOrIndirectlyOwned" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RevenueFromRelatedParties" xlink:label="loc_us-gaap_RevenueFromRelatedParties" xlink:title="RevenueFromRelatedParties" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_us-gaap_RevenueFromRelatedParties" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_us-gaap_RevenueFromRelatedParties" xlink:type="arc" use="optional" order="8001" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureSegmentDisclosuresDetails3">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentReportingAssetReconcilingItemLineItems" xlink:label="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems" xlink:title="SegmentReportingAssetReconcilingItemLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable" xlink:label="loc_us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable" xlink:title="ReconciliationOfAssetsFromSegmentToConsolidatedTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems" xlink:to="loc_us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable" xlink:title="Definition : loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems to loc_us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConsolidationItemsAxis" xlink:label="loc_us-gaap_ConsolidationItemsAxis" xlink:title="ConsolidationItemsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain" xlink:title="ConsolidationItemsDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConsolidationItemsAxis" xlink:to="loc_us-gaap_ConsolidationItemsDomain" xlink:title="Definition : loc_us-gaap_ConsolidationItemsAxis to loc_us-gaap_ConsolidationItemsDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingMember" xlink:label="loc_hcp_SeniorHousingMember" xlink:title="SeniorHousingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember" xlink:title="OperatingSegmentsMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidationItemsDomain" xlink:to="loc_us-gaap_OperatingSegmentsMember" xlink:title="Definition : loc_us-gaap_ConsolidationItemsDomain to loc_us-gaap_OperatingSegmentsMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable" xlink:to="loc_us-gaap_ConsolidationItemsAxis" xlink:title="Definition : loc_us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable to loc_us-gaap_ConsolidationItemsAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="ConsolidationItemsDomain_1" xlink:title="ConsolidationItemsDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConsolidationItemsAxis" xlink:to="ConsolidationItemsDomain_1" xlink:title="Definition : loc_us-gaap_ConsolidationItemsAxis to loc_us-gaap_ConsolidationItemsDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PostAcuteAndSkilledNursingMember" xlink:label="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="PostAcuteAndSkilledNursingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_PostAcuteAndSkilledNursingMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember" xlink:title="MaterialReconcilingItemsMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidationItemsDomain" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember" xlink:title="Definition : loc_us-gaap_ConsolidationItemsDomain to loc_us-gaap_MaterialReconcilingItemsMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_AssetsBeforeAccumulatedDepreciationAndAmortization" xlink:label="loc_hcp_AssetsBeforeAccumulatedDepreciationAndAmortization" xlink:title="AssetsBeforeAccumulatedDepreciationAndAmortization" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems" xlink:to="loc_hcp_AssetsBeforeAccumulatedDepreciationAndAmortization" xlink:title="Definition : loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems to loc_hcp_AssetsBeforeAccumulatedDepreciationAndAmortization" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LifescienceMember" xlink:label="loc_hcp_LifescienceMember" xlink:title="LifescienceMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_LifescienceMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_LifescienceMember" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:title="AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:title="Definition : loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems to loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AssetsHeldForSaleAtCarryingValue" xlink:label="loc_us-gaap_AssetsHeldForSaleAtCarryingValue" xlink:title="AssetsHeldForSaleAtCarryingValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems" xlink:to="loc_us-gaap_AssetsHeldForSaleAtCarryingValue" xlink:title="Definition : loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems to loc_us-gaap_AssetsHeldForSaleAtCarryingValue" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MedicalOfficeMember" xlink:label="loc_hcp_MedicalOfficeMember" xlink:title="MedicalOfficeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_MedicalOfficeMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_MedicalOfficeMember" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets" xlink:title="Assets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems" xlink:to="loc_us-gaap_Assets" xlink:title="Definition : loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems to loc_us-gaap_Assets" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HospitalMember" xlink:label="loc_hcp_HospitalMember" xlink:title="HospitalMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_HospitalMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_HospitalMember" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill" xlink:title="Goodwill" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems" xlink:to="loc_us-gaap_Goodwill" xlink:title="Definition : loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems to loc_us-gaap_Goodwill" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GoodwillImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairmentLoss" xlink:title="GoodwillImpairmentLoss" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems" xlink:to="loc_us-gaap_GoodwillImpairmentLoss" xlink:title="Definition : loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems to loc_us-gaap_GoodwillImpairmentLoss" xlink:type="arc" use="optional" order="7" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureIncomeTaxesDetails">
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_IncomeTaxDisclosureLineItems" xlink:label="loc_hcp_IncomeTaxDisclosureLineItems" xlink:title="IncomeTaxDisclosureLineItems" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ScheduleOfIncomeDisclosureTable" xlink:label="loc_hcp_ScheduleOfIncomeDisclosureTable" xlink:title="ScheduleOfIncomeDisclosureTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_hcp_IncomeTaxDisclosureLineItems" xlink:to="loc_hcp_ScheduleOfIncomeDisclosureTable" xlink:title="Definition : loc_hcp_IncomeTaxDisclosureLineItems to loc_hcp_ScheduleOfIncomeDisclosureTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="BusinessAcquisitionAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="BusinessAcquisitionAcquireeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAxis to loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SloughEstatesUSAIncorporationsMember" xlink:label="loc_hcp_SloughEstatesUSAIncorporationsMember" xlink:title="SloughEstatesUSAIncorporationsMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="loc_hcp_SloughEstatesUSAIncorporationsMember" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAcquireeDomain to loc_hcp_SloughEstatesUSAIncorporationsMember" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:label="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:title="ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits" xlink:title="UnrecognizedTaxBenefits" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:to="loc_us-gaap_UnrecognizedTaxBenefits" xlink:title="Definition : loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward to loc_us-gaap_UnrecognizedTaxBenefits" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_hcp_ScheduleOfIncomeDisclosureTable" xlink:to="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="Definition : loc_hcp_ScheduleOfIncomeDisclosureTable to loc_us-gaap_BusinessAcquisitionAxis" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCRManorCareIncMember" xlink:label="loc_hcp_HCRManorCareIncMember" xlink:title="HCRManorCareIncMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="loc_hcp_HCRManorCareIncMember" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAcquireeDomain to loc_hcp_HCRManorCareIncMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DeferredTaxLiabilities" xlink:label="loc_us-gaap_DeferredTaxLiabilities" xlink:title="DeferredTaxLiabilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_IncomeTaxDisclosureLineItems" xlink:to="loc_us-gaap_DeferredTaxLiabilities" xlink:title="Definition : loc_hcp_IncomeTaxDisclosureLineItems to loc_us-gaap_DeferredTaxLiabilities" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions" xlink:title="UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions" xlink:title="Definition : loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward to loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities" xlink:title="UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_IncomeTaxDisclosureLineItems" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities" xlink:title="Definition : loc_hcp_IncomeTaxDisclosureLineItems to loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions" xlink:title="UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions" xlink:title="Definition : loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward to loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DispositionOfPreacquisitionAssetsSubjectToCorporateLevelTaxPeriod" xlink:label="loc_hcp_DispositionOfPreacquisitionAssetsSubjectToCorporateLevelTaxPeriod" xlink:title="DispositionOfPreacquisitionAssetsSubjectToCorporateLevelTaxPeriod" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_IncomeTaxDisclosureLineItems" xlink:to="loc_hcp_DispositionOfPreacquisitionAssetsSubjectToCorporateLevelTaxPeriod" xlink:title="Definition : loc_hcp_IncomeTaxDisclosureLineItems to loc_hcp_DispositionOfPreacquisitionAssetsSubjectToCorporateLevelTaxPeriod" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions" xlink:title="UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions" xlink:title="Definition : loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward to loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_UnrecognizedTaxBenefitsIncreaseResultingFromAcquisitions" xlink:label="loc_hcp_UnrecognizedTaxBenefitsIncreaseResultingFromAcquisitions" xlink:title="UnrecognizedTaxBenefitsIncreaseResultingFromAcquisitions" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_IncomeTaxDisclosureLineItems" xlink:to="loc_hcp_UnrecognizedTaxBenefitsIncreaseResultingFromAcquisitions" xlink:title="Definition : loc_hcp_IncomeTaxDisclosureLineItems to loc_hcp_UnrecognizedTaxBenefitsIncreaseResultingFromAcquisitions" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense" xlink:title="UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense" xlink:title="Definition : loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward to loc_us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations" xlink:title="UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_IncomeTaxDisclosureLineItems" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations" xlink:title="Definition : loc_hcp_IncomeTaxDisclosureLineItems to loc_us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_UnrecognizedTaxBenefitsReversalOfInterestOnIncomeTaxesExpense" xlink:label="loc_hcp_UnrecognizedTaxBenefitsReversalOfInterestOnIncomeTaxesExpense" xlink:title="UnrecognizedTaxBenefitsReversalOfInterestOnIncomeTaxesExpense" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:to="loc_hcp_UnrecognizedTaxBenefitsReversalOfInterestOnIncomeTaxesExpense" xlink:title="Definition : loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward to loc_hcp_UnrecognizedTaxBenefitsReversalOfInterestOnIncomeTaxesExpense" xlink:type="arc" use="optional" order="6" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_IncomeTaxDisclosureLineItems" xlink:to="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:title="Definition : loc_hcp_IncomeTaxDisclosureLineItems to loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease" xlink:title="UnrecognizedTaxBenefitsPeriodIncreaseDecrease" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_IncomeTaxDisclosureLineItems" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease" xlink:title="Definition : loc_hcp_IncomeTaxDisclosureLineItems to loc_us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CNLRetirementCorpMergerMember" xlink:label="loc_hcp_CNLRetirementCorpMergerMember" xlink:title="CNLRetirementCorpMergerMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="loc_hcp_CNLRetirementCorpMergerMember" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAcquireeDomain to loc_hcp_CNLRetirementCorpMergerMember" xlink:type="arc" order="8000" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureDispositionsOfRealEstateAndDiscontinuedOperationsDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:title="IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:title="IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:title="Definition : loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems to loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PostAcuteAndSkilledNursingMember" xlink:label="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="PostAcuteAndSkilledNursingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_PostAcuteAndSkilledNursingMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HospitalMember" xlink:label="loc_hcp_HospitalMember" xlink:title="HospitalMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_HospitalMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_HospitalMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DispositionOfPropertiesSoldNumber" xlink:label="loc_hcp_DispositionOfPropertiesSoldNumber" xlink:title="DispositionOfPropertiesSoldNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:to="loc_hcp_DispositionOfPropertiesSoldNumber" xlink:title="Definition : loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems to loc_hcp_DispositionOfPropertiesSoldNumber" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PostAcuteAndSkilledNursingAndSeniorHousingMember" xlink:label="loc_hcp_PostAcuteAndSkilledNursingAndSeniorHousingMember" xlink:title="PostAcuteAndSkilledNursingAndSeniorHousingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_PostAcuteAndSkilledNursingAndSeniorHousingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_PostAcuteAndSkilledNursingAndSeniorHousingMember" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_TotalConsiderationForDispositionOfRealEstate" xlink:label="loc_hcp_TotalConsiderationForDispositionOfRealEstate" xlink:title="TotalConsiderationForDispositionOfRealEstate" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:to="loc_hcp_TotalConsiderationForDispositionOfRealEstate" xlink:title="Definition : loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems to loc_hcp_TotalConsiderationForDispositionOfRealEstate" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PropertiesHeldForSaleNumber" xlink:label="loc_hcp_PropertiesHeldForSaleNumber" xlink:title="PropertiesHeldForSaleNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:to="loc_hcp_PropertiesHeldForSaleNumber" xlink:title="Definition : loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems to loc_hcp_PropertiesHeldForSaleNumber" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AssetsHeldForSaleAtCarryingValue" xlink:label="loc_us-gaap_AssetsHeldForSaleAtCarryingValue" xlink:title="AssetsHeldForSaleAtCarryingValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:to="loc_us-gaap_AssetsHeldForSaleAtCarryingValue" xlink:title="Definition : loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems to loc_us-gaap_AssetsHeldForSaleAtCarryingValue" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HospitalAndMedicalOfficeMember" xlink:label="loc_hcp_HospitalAndMedicalOfficeMember" xlink:title="HospitalAndMedicalOfficeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_HospitalAndMedicalOfficeMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_HospitalAndMedicalOfficeMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfBedsSold" xlink:label="loc_hcp_NumberOfBedsSold" xlink:title="NumberOfBedsSold" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:to="loc_hcp_NumberOfBedsSold" xlink:title="Definition : loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems to loc_hcp_NumberOfBedsSold" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingAndHospitalMember" xlink:label="loc_hcp_SeniorHousingAndHospitalMember" xlink:title="SeniorHousingAndHospitalMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingAndHospitalMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingAndHospitalMember" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfBedsAcquired" xlink:label="loc_hcp_NumberOfBedsAcquired" xlink:title="NumberOfBedsAcquired" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:to="loc_hcp_NumberOfBedsAcquired" xlink:title="Definition : loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems to loc_hcp_NumberOfBedsAcquired" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingMember" xlink:label="loc_hcp_SeniorHousingMember" xlink:title="SeniorHousingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingMember" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LifescienceMember" xlink:label="loc_hcp_LifescienceMember" xlink:title="LifescienceMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_LifescienceMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_LifescienceMember" xlink:type="arc" use="optional" order="8003" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingAndHospitalAndMedicalOfficeMember" xlink:label="loc_hcp_SeniorHousingAndHospitalAndMedicalOfficeMember" xlink:title="SeniorHousingAndHospitalAndMedicalOfficeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingAndHospitalAndMedicalOfficeMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingAndHospitalAndMedicalOfficeMember" xlink:type="arc" use="optional" order="8004" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MedicalOfficeMember" xlink:label="loc_hcp_MedicalOfficeMember" xlink:title="MedicalOfficeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_MedicalOfficeMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_MedicalOfficeMember" xlink:type="arc" use="optional" order="8005" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureCommitmentsAndContingenciesDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskLineItems" xlink:label="loc_us-gaap_ConcentrationRiskLineItems" xlink:title="ConcentrationRiskLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskTable" xlink:label="loc_us-gaap_ConcentrationRiskTable" xlink:title="ConcentrationRiskTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_us-gaap_ConcentrationRiskTable" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_us-gaap_ConcentrationRiskTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CounterpartyNameAxis" xlink:label="loc_us-gaap_CounterpartyNameAxis" xlink:title="CounterpartyNameAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:title="RepurchaseAgreementCounterpartyNameDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CounterpartyNameAxis" xlink:to="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:title="Definition : loc_us-gaap_CounterpartyNameAxis to loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis" xlink:title="ConcentrationRiskByTypeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain" xlink:title="ConcentrationRiskTypeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain" xlink:title="Definition : loc_us-gaap_ConcentrationRiskByTypeAxis to loc_us-gaap_ConcentrationRiskTypeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:title="ConcentrationRiskByBenchmarkAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain" xlink:title="ConcentrationRiskBenchmarkDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain" xlink:title="Definition : loc_us-gaap_ConcentrationRiskByBenchmarkAxis to loc_us-gaap_ConcentrationRiskBenchmarkDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCRManorCareIncMember" xlink:label="loc_hcp_HCRManorCareIncMember" xlink:title="HCRManorCareIncMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:to="loc_hcp_HCRManorCareIncMember" xlink:title="Definition : loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain to loc_hcp_HCRManorCareIncMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingMember" xlink:label="loc_hcp_SeniorHousingMember" xlink:title="SeniorHousingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OperatorsMember" xlink:label="loc_hcp_OperatorsMember" xlink:title="OperatorsMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain" xlink:to="loc_hcp_OperatorsMember" xlink:title="Definition : loc_us-gaap_ConcentrationRiskTypeDomain to loc_hcp_OperatorsMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AssetsTotalMember" xlink:label="loc_us-gaap_AssetsTotalMember" xlink:title="AssetsTotalMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain" xlink:to="loc_us-gaap_AssetsTotalMember" xlink:title="Definition : loc_us-gaap_ConcentrationRiskBenchmarkDomain to loc_us-gaap_AssetsTotalMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CondensedFinancialStatementsAbstract" xlink:label="loc_hcp_CondensedFinancialStatementsAbstract" xlink:title="CondensedFinancialStatementsAbstract" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CondensedFinancialInformationBalanceSheetsAbstract" xlink:label="loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract" xlink:title="CondensedFinancialInformationBalanceSheetsAbstract" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialStatementsAbstract" xlink:to="loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract" xlink:title="Definition : loc_hcp_CondensedFinancialStatementsAbstract to loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateInvestmentPropertyNet" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyNet" xlink:title="RealEstateInvestmentPropertyNet" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract" xlink:to="loc_us-gaap_RealEstateInvestmentPropertyNet" xlink:title="Definition : loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract to loc_us-gaap_RealEstateInvestmentPropertyNet" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CondensedFinancialInformationIncomeStatementAbstract" xlink:label="loc_hcp_CondensedFinancialInformationIncomeStatementAbstract" xlink:title="CondensedFinancialInformationIncomeStatementAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues" xlink:title="Revenues" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationIncomeStatementAbstract" xlink:to="loc_us-gaap_Revenues" xlink:title="Definition : loc_hcp_CondensedFinancialInformationIncomeStatementAbstract to loc_us-gaap_Revenues" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:title="Definition : loc_us-gaap_ConcentrationRiskTable to loc_us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:label="RepurchaseAgreementCounterpartyNameDomain_1" xlink:title="RepurchaseAgreementCounterpartyNameDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CounterpartyNameAxis" xlink:to="RepurchaseAgreementCounterpartyNameDomain_1" xlink:title="Definition : loc_us-gaap_CounterpartyNameAxis to loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="ConcentrationRiskTypeDomain_2" xlink:title="ConcentrationRiskTypeDomain_2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis" xlink:to="ConcentrationRiskTypeDomain_2" xlink:title="Definition : loc_us-gaap_ConcentrationRiskByTypeAxis to loc_us-gaap_ConcentrationRiskTypeDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="ConcentrationRiskBenchmarkDomain_3" xlink:title="ConcentrationRiskBenchmarkDomain_3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:to="ConcentrationRiskBenchmarkDomain_3" xlink:title="Definition : loc_us-gaap_ConcentrationRiskByBenchmarkAxis to loc_us-gaap_ConcentrationRiskBenchmarkDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BrookdaleMember" xlink:label="loc_hcp_BrookdaleMember" xlink:title="BrookdaleMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:to="loc_hcp_BrookdaleMember" xlink:title="Definition : loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain to loc_hcp_BrookdaleMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PostAcuteAndSkilledNursingMember" xlink:label="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="PostAcuteAndSkilledNursingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_PostAcuteAndSkilledNursingMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SalesRevenuesMember" xlink:label="loc_hcp_SalesRevenuesMember" xlink:title="SalesRevenuesMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain" xlink:to="loc_hcp_SalesRevenuesMember" xlink:title="Definition : loc_us-gaap_ConcentrationRiskBenchmarkDomain to loc_hcp_SalesRevenuesMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1" xlink:title="ConcentrationRiskPercentage1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_us-gaap_ConcentrationRiskPercentage1" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:title="CashAndCashEquivalentsAtCarryingValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:title="Definition : loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract to loc_us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialStatementsAbstract" xlink:to="loc_hcp_CondensedFinancialInformationIncomeStatementAbstract" xlink:title="Definition : loc_hcp_CondensedFinancialStatementsAbstract to loc_hcp_CondensedFinancialInformationIncomeStatementAbstract" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaap_OperatingExpenses" xlink:title="OperatingExpenses" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationIncomeStatementAbstract" xlink:to="loc_us-gaap_OperatingExpenses" xlink:title="Definition : loc_hcp_CondensedFinancialInformationIncomeStatementAbstract to loc_us-gaap_OperatingExpenses" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis" xlink:title="Definition : loc_us-gaap_ConcentrationRiskTable to loc_us-gaap_ConcentrationRiskByTypeAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SunriseMember" xlink:label="loc_hcp_SunriseMember" xlink:title="SunriseMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:to="loc_hcp_SunriseMember" xlink:title="Definition : loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain to loc_hcp_SunriseMember" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NumberOfUnconsolidatedJointVenture" xlink:label="loc_hcp_NumberOfUnconsolidatedJointVenture" xlink:title="NumberOfUnconsolidatedJointVenture" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_NumberOfUnconsolidatedJointVenture" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_NumberOfUnconsolidatedJointVenture" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherAssets" xlink:label="loc_us-gaap_OtherAssets" xlink:title="OtherAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract" xlink:to="loc_us-gaap_OtherAssets" xlink:title="Definition : loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract to loc_us-gaap_OtherAssets" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DepreciationAndAmortization" xlink:label="loc_us-gaap_DepreciationAndAmortization" xlink:title="DepreciationAndAmortization" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationIncomeStatementAbstract" xlink:to="loc_us-gaap_DepreciationAndAmortization" xlink:title="Definition : loc_hcp_CondensedFinancialInformationIncomeStatementAbstract to loc_us-gaap_DepreciationAndAmortization" xlink:type="arc" use="optional" order="3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_us-gaap_ConcentrationRiskTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_CondensedFinancialStatementsAbstract" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_CondensedFinancialStatementsAbstract" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets" xlink:title="Assets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract" xlink:to="loc_us-gaap_Assets" xlink:title="Definition : loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract to loc_us-gaap_Assets" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense" xlink:title="InterestExpense" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationIncomeStatementAbstract" xlink:to="loc_us-gaap_InterestExpense" xlink:title="Definition : loc_hcp_CondensedFinancialInformationIncomeStatementAbstract to loc_us-gaap_InterestExpense" xlink:type="arc" use="optional" order="4" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable" xlink:to="loc_us-gaap_CounterpartyNameAxis" xlink:title="Definition : loc_us-gaap_ConcentrationRiskTable to loc_us-gaap_CounterpartyNameAxis" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_DebtAndCapitalLeaseObligations" xlink:title="DebtAndCapitalLeaseObligations" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract" xlink:to="loc_us-gaap_DebtAndCapitalLeaseObligations" xlink:title="Definition : loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract to loc_us-gaap_DebtAndCapitalLeaseObligations" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense" xlink:title="NonoperatingIncomeExpense" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationIncomeStatementAbstract" xlink:to="loc_us-gaap_NonoperatingIncomeExpense" xlink:title="Definition : loc_hcp_CondensedFinancialInformationIncomeStatementAbstract to loc_us-gaap_NonoperatingIncomeExpense" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementGeographicalAxis" xlink:label="loc_us-gaap_StatementGeographicalAxis" xlink:title="StatementGeographicalAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable" xlink:to="loc_us-gaap_StatementGeographicalAxis" xlink:title="Definition : loc_us-gaap_ConcentrationRiskTable to loc_us-gaap_StatementGeographicalAxis" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:title="AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:title="Definition : loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract to loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:title="IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationIncomeStatementAbstract" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:title="Definition : loc_hcp_CondensedFinancialInformationIncomeStatementAbstract to loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:title="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:title="Definition : loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract to loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit" xlink:title="IncomeTaxExpenseBenefit" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationIncomeStatementAbstract" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit" xlink:title="Definition : loc_hcp_CondensedFinancialInformationIncomeStatementAbstract to loc_us-gaap_IncomeTaxExpenseBenefit" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity" xlink:title="LiabilitiesAndStockholdersEquity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity" xlink:title="Definition : loc_hcp_CondensedFinancialInformationBalanceSheetsAbstract to loc_us-gaap_LiabilitiesAndStockholdersEquity" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:title="IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationIncomeStatementAbstract" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:title="Definition : loc_hcp_CondensedFinancialInformationIncomeStatementAbstract to loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:title="IncomeLossFromDiscontinuedOperationsNetOfTax" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationIncomeStatementAbstract" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:title="Definition : loc_hcp_CondensedFinancialInformationIncomeStatementAbstract to loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss" xlink:title="ProfitLoss" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_CondensedFinancialInformationIncomeStatementAbstract" xlink:to="loc_us-gaap_ProfitLoss" xlink:title="Definition : loc_hcp_CondensedFinancialInformationIncomeStatementAbstract to loc_us-gaap_ProfitLoss" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentGeographicalDomain" xlink:label="loc_us-gaap_SegmentGeographicalDomain" xlink:title="SegmentGeographicalDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementGeographicalAxis" xlink:to="loc_us-gaap_SegmentGeographicalDomain" xlink:title="Definition : loc_us-gaap_StatementGeographicalAxis to loc_us-gaap_SegmentGeographicalDomain" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EmeritusMember" xlink:label="loc_hcp_EmeritusMember" xlink:title="EmeritusMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:to="loc_hcp_EmeritusMember" xlink:title="Definition : loc_us-gaap_RepurchaseAgreementCounterpartyNameDomain to loc_hcp_EmeritusMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd#stpr_CA" xlink:label="loc_stpr_CA" xlink:title="CA" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentGeographicalDomain" xlink:to="loc_stpr_CA" xlink:title="Definition : loc_us-gaap_SegmentGeographicalDomain to loc_stpr_CA" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ConcentrationRiskAssetsExcluded" xlink:label="loc_hcp_ConcentrationRiskAssetsExcluded" xlink:title="ConcentrationRiskAssetsExcluded" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_ConcentrationRiskAssetsExcluded" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_ConcentrationRiskAssetsExcluded" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentGeographicalDomain" xlink:label="SegmentGeographicalDomain_4" xlink:title="SegmentGeographicalDomain_4" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementGeographicalAxis" xlink:to="SegmentGeographicalDomain_4" xlink:title="Definition : loc_us-gaap_StatementGeographicalAxis to loc_us-gaap_SegmentGeographicalDomain" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd#stpr_TX" xlink:label="loc_stpr_TX" xlink:title="TX" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentGeographicalDomain" xlink:to="loc_stpr_TX" xlink:title="Definition : loc_us-gaap_SegmentGeographicalDomain to loc_stpr_TX" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ConcentrationRiskRevenueExcluded" xlink:label="loc_hcp_ConcentrationRiskRevenueExcluded" xlink:title="ConcentrationRiskRevenueExcluded" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_ConcentrationRiskRevenueExcluded" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_ConcentrationRiskRevenueExcluded" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd#stpr_FL" xlink:label="loc_stpr_FL" xlink:title="FL" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentGeographicalDomain" xlink:to="loc_stpr_FL" xlink:title="Definition : loc_us-gaap_SegmentGeographicalDomain to loc_stpr_FL" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ConcentrationOfRiskOperatorAssetsAsPercentageOfSegmentAssets" xlink:label="loc_hcp_ConcentrationOfRiskOperatorAssetsAsPercentageOfSegmentAssets" xlink:title="ConcentrationOfRiskOperatorAssetsAsPercentageOfSegmentAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_ConcentrationOfRiskOperatorAssetsAsPercentageOfSegmentAssets" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_ConcentrationOfRiskOperatorAssetsAsPercentageOfSegmentAssets" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ConcentrationOfRiskOperatorAssetsAsPercentageOfTotalAssets" xlink:label="loc_hcp_ConcentrationOfRiskOperatorAssetsAsPercentageOfTotalAssets" xlink:title="ConcentrationOfRiskOperatorAssetsAsPercentageOfTotalAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_ConcentrationOfRiskOperatorAssetsAsPercentageOfTotalAssets" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_ConcentrationOfRiskOperatorAssetsAsPercentageOfTotalAssets" xlink:type="arc" use="optional" order="8003" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ConcentrationOfRiskOperatorRevenuesAsPercentageOfSegmentRevenues" xlink:label="loc_hcp_ConcentrationOfRiskOperatorRevenuesAsPercentageOfSegmentRevenues" xlink:title="ConcentrationOfRiskOperatorRevenuesAsPercentageOfSegmentRevenues" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_ConcentrationOfRiskOperatorRevenuesAsPercentageOfSegmentRevenues" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_ConcentrationOfRiskOperatorRevenuesAsPercentageOfSegmentRevenues" xlink:type="arc" use="optional" order="8004" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ConcentrationOfRiskOperatorsRevenuesAsPercentageOfTotalRevenues" xlink:label="loc_hcp_ConcentrationOfRiskOperatorsRevenuesAsPercentageOfTotalRevenues" xlink:title="ConcentrationOfRiskOperatorsRevenuesAsPercentageOfTotalRevenues" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems" xlink:to="loc_hcp_ConcentrationOfRiskOperatorsRevenuesAsPercentageOfTotalRevenues" xlink:title="Definition : loc_us-gaap_ConcentrationRiskLineItems to loc_hcp_ConcentrationOfRiskOperatorsRevenuesAsPercentageOfTotalRevenues" xlink:type="arc" use="optional" order="8005" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureImpairmentsDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:label="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:title="SignificantAcquisitionsAndDisposalsLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfSignificantAcquisitionsAndDisposalsTable" xlink:label="loc_us-gaap_ScheduleOfSignificantAcquisitionsAndDisposalsTable" xlink:title="ScheduleOfSignificantAcquisitionsAndDisposalsTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:to="loc_us-gaap_ScheduleOfSignificantAcquisitionsAndDisposalsTable" xlink:title="Definition : loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems to loc_us-gaap_ScheduleOfSignificantAcquisitionsAndDisposalsTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:title="AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReceivableTypeDomain" xlink:label="loc_us-gaap_ReceivableTypeDomain" xlink:title="ReceivableTypeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:to="loc_us-gaap_ReceivableTypeDomain" xlink:title="Definition : loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis to loc_us-gaap_ReceivableTypeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MedicalOfficeMember" xlink:label="loc_hcp_MedicalOfficeMember" xlink:title="MedicalOfficeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_MedicalOfficeMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_MedicalOfficeMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DelphisOperationsLPSeniorSecuredTermLoanMember" xlink:label="loc_hcp_DelphisOperationsLPSeniorSecuredTermLoanMember" xlink:title="DelphisOperationsLPSeniorSecuredTermLoanMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain" xlink:to="loc_hcp_DelphisOperationsLPSeniorSecuredTermLoanMember" xlink:title="Definition : loc_us-gaap_ReceivableTypeDomain to loc_hcp_DelphisOperationsLPSeniorSecuredTermLoanMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSignificantAcquisitionsAndDisposalsTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfSignificantAcquisitionsAndDisposalsTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LifescienceMember" xlink:label="loc_hcp_LifescienceMember" xlink:title="LifescienceMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_LifescienceMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_LifescienceMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ImpairmentOfRealEstate" xlink:label="loc_us-gaap_ImpairmentOfRealEstate" xlink:title="ImpairmentOfRealEstate" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:to="loc_us-gaap_ImpairmentOfRealEstate" xlink:title="Definition : loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems to loc_us-gaap_ImpairmentOfRealEstate" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSignificantAcquisitionsAndDisposalsTable" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfSignificantAcquisitionsAndDisposalsTable to loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease" xlink:label="loc_us-gaap_AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease" xlink:title="AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:to="loc_us-gaap_AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease" xlink:title="Definition : loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems to loc_us-gaap_AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ImpairmentDueToTransferOfProperties" xlink:label="loc_hcp_ImpairmentDueToTransferOfProperties" xlink:title="ImpairmentDueToTransferOfProperties" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:to="loc_hcp_ImpairmentDueToTransferOfProperties" xlink:title="Definition : loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems to loc_hcp_ImpairmentDueToTransferOfProperties" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_TransferOfPropertiesNumber" xlink:label="loc_hcp_TransferOfPropertiesNumber" xlink:title="TransferOfPropertiesNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:to="loc_hcp_TransferOfPropertiesNumber" xlink:title="Definition : loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems to loc_hcp_TransferOfPropertiesNumber" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ImpairmentOfFacilitiesDueToDecreaseInExpectedCashFlowsNumber" xlink:label="loc_hcp_ImpairmentOfFacilitiesDueToDecreaseInExpectedCashFlowsNumber" xlink:title="ImpairmentOfFacilitiesDueToDecreaseInExpectedCashFlowsNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:to="loc_hcp_ImpairmentOfFacilitiesDueToDecreaseInExpectedCashFlowsNumber" xlink:title="Definition : loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems to loc_hcp_ImpairmentOfFacilitiesDueToDecreaseInExpectedCashFlowsNumber" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ImpairmentOfFacilitiesDueToDecreaseInExpectedCashFlows" xlink:label="loc_hcp_ImpairmentOfFacilitiesDueToDecreaseInExpectedCashFlows" xlink:title="ImpairmentOfFacilitiesDueToDecreaseInExpectedCashFlows" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:to="loc_hcp_ImpairmentOfFacilitiesDueToDecreaseInExpectedCashFlows" xlink:title="Definition : loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems to loc_hcp_ImpairmentOfFacilitiesDueToDecreaseInExpectedCashFlows" xlink:type="arc" use="optional" order="8003" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EarlyTerminationOfLeasesNumber" xlink:label="loc_hcp_EarlyTerminationOfLeasesNumber" xlink:title="EarlyTerminationOfLeasesNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:to="loc_hcp_EarlyTerminationOfLeasesNumber" xlink:title="Definition : loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems to loc_hcp_EarlyTerminationOfLeasesNumber" xlink:type="arc" use="optional" order="8004" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ImpairedDirectFinanceLeasesNumber" xlink:label="loc_hcp_ImpairedDirectFinanceLeasesNumber" xlink:title="ImpairedDirectFinanceLeasesNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:to="loc_hcp_ImpairedDirectFinanceLeasesNumber" xlink:title="Definition : loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems to loc_hcp_ImpairedDirectFinanceLeasesNumber" xlink:type="arc" use="optional" order="8005" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ImpairmentOfLeaseDueToEarlyTermination" xlink:label="loc_hcp_ImpairmentOfLeaseDueToEarlyTermination" xlink:title="ImpairmentOfLeaseDueToEarlyTermination" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:to="loc_hcp_ImpairmentOfLeaseDueToEarlyTermination" xlink:title="Definition : loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems to loc_hcp_ImpairmentOfLeaseDueToEarlyTermination" xlink:type="arc" use="optional" order="8006" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ImpairmentOfLeasehold" xlink:label="loc_us-gaap_ImpairmentOfLeasehold" xlink:title="ImpairmentOfLeasehold" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:to="loc_us-gaap_ImpairmentOfLeasehold" xlink:title="Definition : loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems to loc_us-gaap_ImpairmentOfLeasehold" xlink:type="arc" use="optional" order="8007" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EquityMethodInvestmentsBeforeImpairment" xlink:label="loc_hcp_EquityMethodInvestmentsBeforeImpairment" xlink:title="EquityMethodInvestmentsBeforeImpairment" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:to="loc_hcp_EquityMethodInvestmentsBeforeImpairment" xlink:title="Definition : loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems to loc_hcp_EquityMethodInvestmentsBeforeImpairment" xlink:type="arc" use="optional" order="8008" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="loc_us-gaap_EquityMethodInvestments" xlink:title="EquityMethodInvestments" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:to="loc_us-gaap_EquityMethodInvestments" xlink:title="Definition : loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems to loc_us-gaap_EquityMethodInvestments" xlink:type="arc" use="optional" order="8009" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AreaOfRealEstateProperty" xlink:label="loc_us-gaap_AreaOfRealEstateProperty" xlink:title="AreaOfRealEstateProperty" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:to="loc_us-gaap_AreaOfRealEstateProperty" xlink:title="Definition : loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems to loc_us-gaap_AreaOfRealEstateProperty" xlink:type="arc" use="optional" order="8010" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_AreaOfLeaseExtension" xlink:label="loc_hcp_AreaOfLeaseExtension" xlink:title="AreaOfLeaseExtension" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:to="loc_hcp_AreaOfLeaseExtension" xlink:title="Definition : loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems to loc_hcp_AreaOfLeaseExtension" xlink:type="arc" use="optional" order="8011" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_AreaOfRealEstateToBeDeveloped" xlink:label="loc_hcp_AreaOfRealEstateToBeDeveloped" xlink:title="AreaOfRealEstateToBeDeveloped" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems" xlink:to="loc_hcp_AreaOfRealEstateToBeDeveloped" xlink:title="Definition : loc_us-gaap_SignificantAcquisitionsAndDisposalsLineItems to loc_hcp_AreaOfRealEstateToBeDeveloped" xlink:type="arc" use="optional" order="8012" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureOtherAssetsDetails">
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ScheduleOfOtherAssetsLineItems" xlink:label="loc_hcp_ScheduleOfOtherAssetsLineItems" xlink:title="ScheduleOfOtherAssetsLineItems" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ScheduleOfOtherAssetsTable" xlink:label="loc_hcp_ScheduleOfOtherAssetsTable" xlink:title="ScheduleOfOtherAssetsTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_hcp_ScheduleOfOtherAssetsLineItems" xlink:to="loc_hcp_ScheduleOfOtherAssetsTable" xlink:title="Definition : loc_hcp_ScheduleOfOtherAssetsLineItems to loc_hcp_ScheduleOfOtherAssetsTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:title="AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReceivableTypeDomain" xlink:label="loc_us-gaap_ReceivableTypeDomain" xlink:title="ReceivableTypeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:to="loc_us-gaap_ReceivableTypeDomain" xlink:title="Definition : loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis to loc_us-gaap_ReceivableTypeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:title="ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvesteeNameDomain" xlink:label="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:title="EquityMethodInvesteeNameDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:to="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:title="Definition : loc_us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis to loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MedicalOfficeMember" xlink:label="loc_hcp_MedicalOfficeMember" xlink:title="MedicalOfficeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_MedicalOfficeMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_MedicalOfficeMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DelphisOperationsLPSeniorSecuredTermLoanMember" xlink:label="loc_hcp_DelphisOperationsLPSeniorSecuredTermLoanMember" xlink:title="DelphisOperationsLPSeniorSecuredTermLoanMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain" xlink:to="loc_hcp_DelphisOperationsLPSeniorSecuredTermLoanMember" xlink:title="Definition : loc_us-gaap_ReceivableTypeDomain to loc_hcp_DelphisOperationsLPSeniorSecuredTermLoanMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FourSeasonsHealthCareMember" xlink:label="loc_hcp_FourSeasonsHealthCareMember" xlink:title="FourSeasonsHealthCareMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:to="loc_hcp_FourSeasonsHealthCareMember" xlink:title="Definition : loc_us-gaap_EquityMethodInvesteeNameDomain to loc_hcp_FourSeasonsHealthCareMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_hcp_ScheduleOfOtherAssetsTable" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:title="Definition : loc_hcp_ScheduleOfOtherAssetsTable to loc_us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HCPVenturesIVLLCMember" xlink:label="loc_hcp_HCPVenturesIVLLCMember" xlink:title="HCPVenturesIVLLCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvesteeNameDomain" xlink:to="loc_hcp_HCPVenturesIVLLCMember" xlink:title="Definition : loc_us-gaap_EquityMethodInvesteeNameDomain to loc_hcp_HCPVenturesIVLLCMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestReceivable" xlink:label="loc_us-gaap_InterestReceivable" xlink:title="InterestReceivable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ScheduleOfOtherAssetsLineItems" xlink:to="loc_us-gaap_InterestReceivable" xlink:title="Definition : loc_hcp_ScheduleOfOtherAssetsLineItems to loc_us-gaap_InterestReceivable" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_hcp_ScheduleOfOtherAssetsTable" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:title="Definition : loc_hcp_ScheduleOfOtherAssetsTable to loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_AllowanceForLoanAndLeaseLossesLoansAcquiredRelatedToAccruedInterestReceivable" xlink:label="loc_hcp_AllowanceForLoanAndLeaseLossesLoansAcquiredRelatedToAccruedInterestReceivable" xlink:title="AllowanceForLoanAndLeaseLossesLoansAcquiredRelatedToAccruedInterestReceivable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ScheduleOfOtherAssetsLineItems" xlink:to="loc_hcp_AllowanceForLoanAndLeaseLossesLoansAcquiredRelatedToAccruedInterestReceivable" xlink:title="Definition : loc_hcp_ScheduleOfOtherAssetsLineItems to loc_hcp_AllowanceForLoanAndLeaseLossesLoansAcquiredRelatedToAccruedInterestReceivable" xlink:type="arc" use="optional" order="3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_hcp_ScheduleOfOtherAssetsTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_hcp_ScheduleOfOtherAssetsTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:label="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:title="LoansAndLeasesReceivableNetReportedAmount" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ScheduleOfOtherAssetsLineItems" xlink:to="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:title="Definition : loc_hcp_ScheduleOfOtherAssetsLineItems to loc_us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LoanReceivableInterestRatePayable" xlink:label="loc_hcp_LoanReceivableInterestRatePayable" xlink:title="LoanReceivableInterestRatePayable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ScheduleOfOtherAssetsLineItems" xlink:to="loc_hcp_LoanReceivableInterestRatePayable" xlink:title="Definition : loc_hcp_ScheduleOfOtherAssetsLineItems to loc_hcp_LoanReceivableInterestRatePayable" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AvailableForSaleSecuritiesGrossRealizedGains" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesGrossRealizedGains" xlink:title="AvailableForSaleSecuritiesGrossRealizedGains" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ScheduleOfOtherAssetsLineItems" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesGrossRealizedGains" xlink:title="Definition : loc_hcp_ScheduleOfOtherAssetsLineItems to loc_us-gaap_AvailableForSaleSecuritiesGrossRealizedGains" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HeldToMaturitySecuritiesParValue" xlink:label="loc_hcp_HeldToMaturitySecuritiesParValue" xlink:title="HeldToMaturitySecuritiesParValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ScheduleOfOtherAssetsLineItems" xlink:to="loc_hcp_HeldToMaturitySecuritiesParValue" xlink:title="Definition : loc_hcp_ScheduleOfOtherAssetsLineItems to loc_hcp_HeldToMaturitySecuritiesParValue" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HeldToMaturitySecuritiesDiscountedParValue" xlink:label="loc_hcp_HeldToMaturitySecuritiesDiscountedParValue" xlink:title="HeldToMaturitySecuritiesDiscountedParValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ScheduleOfOtherAssetsLineItems" xlink:to="loc_hcp_HeldToMaturitySecuritiesDiscountedParValue" xlink:title="Definition : loc_hcp_ScheduleOfOtherAssetsLineItems to loc_hcp_HeldToMaturitySecuritiesDiscountedParValue" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_InvestmentImputedInterestEffectiveYieldInterestRate" xlink:label="loc_hcp_InvestmentImputedInterestEffectiveYieldInterestRate" xlink:title="InvestmentImputedInterestEffectiveYieldInterestRate" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ScheduleOfOtherAssetsLineItems" xlink:to="loc_hcp_InvestmentImputedInterestEffectiveYieldInterestRate" xlink:title="Definition : loc_hcp_ScheduleOfOtherAssetsLineItems to loc_hcp_InvestmentImputedInterestEffectiveYieldInterestRate" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PercentageOfInterestOfCounterPartyInUnconsolidatedJointVentureByWhichLoansReceivableAreSecured" xlink:label="loc_hcp_PercentageOfInterestOfCounterPartyInUnconsolidatedJointVentureByWhichLoansReceivableAreSecured" xlink:title="PercentageOfInterestOfCounterPartyInUnconsolidatedJointVentureByWhichLoansReceivableAreSecured" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ScheduleOfOtherAssetsLineItems" xlink:to="loc_hcp_PercentageOfInterestOfCounterPartyInUnconsolidatedJointVentureByWhichLoansReceivableAreSecured" xlink:title="Definition : loc_hcp_ScheduleOfOtherAssetsLineItems to loc_hcp_PercentageOfInterestOfCounterPartyInUnconsolidatedJointVentureByWhichLoansReceivableAreSecured" xlink:type="arc" use="optional" order="8000" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureDebtTables">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems" xlink:title="DebtInstrumentLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable" xlink:title="DebtInstrumentTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_DebtInstrumentTable" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_DebtInstrumentTable" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis" xlink:title="DebtInstrumentAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable" xlink:to="loc_us-gaap_DebtInstrumentAxis" xlink:title="Definition : loc_us-gaap_DebtInstrumentTable to loc_us-gaap_DebtInstrumentAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfDebtTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfDebtTableTextBlock" xlink:title="ScheduleOfDebtTableTextBlock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="loc_us-gaap_ScheduleOfDebtTableTextBlock" xlink:title="Definition : loc_us-gaap_DebtInstrumentLineItems to loc_us-gaap_ScheduleOfDebtTableTextBlock" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain" xlink:title="DebtInstrumentNameDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis" xlink:to="loc_us-gaap_DebtInstrumentNameDomain" xlink:title="Definition : loc_us-gaap_DebtInstrumentAxis to loc_us-gaap_DebtInstrumentNameDomain" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UnsecuredDebtMember" xlink:label="loc_us-gaap_UnsecuredDebtMember" xlink:title="UnsecuredDebtMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain" xlink:to="loc_us-gaap_UnsecuredDebtMember" xlink:title="Definition : loc_us-gaap_DebtInstrumentNameDomain to loc_us-gaap_UnsecuredDebtMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SecuredDebtMember" xlink:label="loc_us-gaap_SecuredDebtMember" xlink:title="SecuredDebtMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain" xlink:to="loc_us-gaap_SecuredDebtMember" xlink:title="Definition : loc_us-gaap_DebtInstrumentNameDomain to loc_us-gaap_SecuredDebtMember" xlink:type="arc" use="optional" order="8001" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureDerivativeFinancialInstrumentsDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeLineItems" xlink:label="loc_us-gaap_DerivativeLineItems" xlink:title="DerivativeLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeTable" xlink:label="loc_us-gaap_DerivativeTable" xlink:title="DerivativeTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_us-gaap_DerivativeTable" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_us-gaap_DerivativeTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis" xlink:title="StatementEquityComponentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain" xlink:title="EquityComponentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis" xlink:to="loc_us-gaap_EquityComponentDomain" xlink:title="Definition : loc_us-gaap_StatementEquityComponentsAxis to loc_us-gaap_EquityComponentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeByNatureAxis" xlink:label="loc_us-gaap_DerivativeByNatureAxis" xlink:title="DerivativeByNatureAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain" xlink:title="DerivativeContractTypeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeByNatureAxis" xlink:to="loc_us-gaap_DerivativeContractTypeDomain" xlink:title="Definition : loc_us-gaap_DerivativeByNatureAxis to loc_us-gaap_DerivativeContractTypeDomain" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis" xlink:title="DerivativeInstrumentsGainLossByHedgingRelationshipAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_HedgingRelationshipDomain" xlink:label="loc_us-gaap_HedgingRelationshipDomain" xlink:title="HedgingRelationshipDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis" xlink:to="loc_us-gaap_HedgingRelationshipDomain" xlink:title="Definition : loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis to loc_us-gaap_HedgingRelationshipDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:title="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:title="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:title="Definition : loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis to loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember" xlink:label="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember" xlink:title="AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain" xlink:to="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember" xlink:title="Definition : loc_us-gaap_EquityComponentDomain to loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_InterestRateSwapEnteredJuly2005MaturityJuly2020Member" xlink:label="loc_hcp_InterestRateSwapEnteredJuly2005MaturityJuly2020Member" xlink:title="InterestRateSwapEnteredJuly2005MaturityJuly2020Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain" xlink:to="loc_hcp_InterestRateSwapEnteredJuly2005MaturityJuly2020Member" xlink:title="Definition : loc_us-gaap_DerivativeContractTypeDomain to loc_hcp_InterestRateSwapEnteredJuly2005MaturityJuly2020Member" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashFlowHedgingMember" xlink:label="loc_us-gaap_CashFlowHedgingMember" xlink:title="CashFlowHedgingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain" xlink:to="loc_us-gaap_CashFlowHedgingMember" xlink:title="Definition : loc_us-gaap_HedgingRelationshipDomain to loc_us-gaap_CashFlowHedgingMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" xlink:title="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" xlink:title="Definition : loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain to loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestRateDerivativesAbstract" xlink:label="loc_us-gaap_InterestRateDerivativesAbstract" xlink:title="InterestRateDerivativesAbstract" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EffectOfIncreaseInInterestRateBy50BasisPointsOnFairValueOfDerivatives" xlink:label="loc_hcp_EffectOfIncreaseInInterestRateBy50BasisPointsOnFairValueOfDerivatives" xlink:title="EffectOfIncreaseInInterestRateBy50BasisPointsOnFairValueOfDerivatives" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestRateDerivativesAbstract" xlink:to="loc_hcp_EffectOfIncreaseInInterestRateBy50BasisPointsOnFairValueOfDerivatives" xlink:title="Definition : loc_us-gaap_InterestRateDerivativesAbstract to loc_hcp_EffectOfIncreaseInInterestRateBy50BasisPointsOnFairValueOfDerivatives" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable" xlink:to="loc_us-gaap_DerivativeByNatureAxis" xlink:title="Definition : loc_us-gaap_DerivativeTable to loc_us-gaap_DerivativeByNatureAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_HedgingRelationshipDomain" xlink:label="HedgingRelationshipDomain_1" xlink:title="HedgingRelationshipDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis" xlink:to="HedgingRelationshipDomain_1" xlink:title="Definition : loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis to loc_us-gaap_HedgingRelationshipDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:label="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_2" xlink:title="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:to="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_2" xlink:title="Definition : loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis to loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_InterestRateSwapEnteredNovember2008MaturityOctober2016Member" xlink:label="loc_hcp_InterestRateSwapEnteredNovember2008MaturityOctober2016Member" xlink:title="InterestRateSwapEnteredNovember2008MaturityOctober2016Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain" xlink:to="loc_hcp_InterestRateSwapEnteredNovember2008MaturityOctober2016Member" xlink:title="Definition : loc_us-gaap_DerivativeContractTypeDomain to loc_hcp_InterestRateSwapEnteredNovember2008MaturityOctober2016Member" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeFixedInterestRate" xlink:label="loc_us-gaap_DerivativeFixedInterestRate" xlink:title="DerivativeFixedInterestRate" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_us-gaap_DerivativeFixedInterestRate" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_us-gaap_DerivativeFixedInterestRate" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EffectOfDecreaseInInterestRateBy50BasisPointsOnFairValueOfDerivatives" xlink:label="loc_hcp_EffectOfDecreaseInInterestRateBy50BasisPointsOnFairValueOfDerivatives" xlink:title="EffectOfDecreaseInInterestRateBy50BasisPointsOnFairValueOfDerivatives" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestRateDerivativesAbstract" xlink:to="loc_hcp_EffectOfDecreaseInInterestRateBy50BasisPointsOnFairValueOfDerivatives" xlink:title="Definition : loc_us-gaap_InterestRateDerivativesAbstract to loc_hcp_EffectOfDecreaseInInterestRateBy50BasisPointsOnFairValueOfDerivatives" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PositionAxis" xlink:label="loc_us-gaap_PositionAxis" xlink:title="PositionAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable" xlink:to="loc_us-gaap_PositionAxis" xlink:title="Definition : loc_us-gaap_DerivativeTable to loc_us-gaap_PositionAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_InterestRateSwapEnteredJuly2012MaturityJune2016Member" xlink:label="loc_hcp_InterestRateSwapEnteredJuly2012MaturityJune2016Member" xlink:title="InterestRateSwapEnteredJuly2012MaturityJune2016Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain" xlink:to="loc_hcp_InterestRateSwapEnteredJuly2012MaturityJune2016Member" xlink:title="Definition : loc_us-gaap_DerivativeContractTypeDomain to loc_hcp_InterestRateSwapEnteredJuly2012MaturityJune2016Member" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeDescriptionOfVariableRateBasis" xlink:label="loc_us-gaap_DerivativeDescriptionOfVariableRateBasis" xlink:title="DerivativeDescriptionOfVariableRateBasis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_us-gaap_DerivativeDescriptionOfVariableRateBasis" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_us-gaap_DerivativeDescriptionOfVariableRateBasis" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EffectOfIncreaseInInterestRateBy100BasisPointsOnFairValueOfDerivatives" xlink:label="loc_hcp_EffectOfIncreaseInInterestRateBy100BasisPointsOnFairValueOfDerivatives" xlink:title="EffectOfIncreaseInInterestRateBy100BasisPointsOnFairValueOfDerivatives" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestRateDerivativesAbstract" xlink:to="loc_hcp_EffectOfIncreaseInInterestRateBy100BasisPointsOnFairValueOfDerivatives" xlink:title="Definition : loc_us-gaap_InterestRateDerivativesAbstract to loc_hcp_EffectOfIncreaseInInterestRateBy100BasisPointsOnFairValueOfDerivatives" xlink:type="arc" use="optional" order="3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis" xlink:title="Definition : loc_us-gaap_DerivativeTable to loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ForeignCurrencySwapEnteredJuly2012MaturityJune2016Member" xlink:label="loc_hcp_ForeignCurrencySwapEnteredJuly2012MaturityJune2016Member" xlink:title="ForeignCurrencySwapEnteredJuly2012MaturityJune2016Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain" xlink:to="loc_hcp_ForeignCurrencySwapEnteredJuly2012MaturityJune2016Member" xlink:title="Definition : loc_us-gaap_DerivativeContractTypeDomain to loc_hcp_ForeignCurrencySwapEnteredJuly2012MaturityJune2016Member" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeBasisSpreadOnVariableRate" xlink:label="loc_us-gaap_DerivativeBasisSpreadOnVariableRate" xlink:title="DerivativeBasisSpreadOnVariableRate" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_us-gaap_DerivativeBasisSpreadOnVariableRate" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_us-gaap_DerivativeBasisSpreadOnVariableRate" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EffectOfDecreaseInInterestRateBy100BasisPointsOnFairValueOfDerivatives" xlink:label="loc_hcp_EffectOfDecreaseInInterestRateBy100BasisPointsOnFairValueOfDerivatives" xlink:title="EffectOfDecreaseInInterestRateBy100BasisPointsOnFairValueOfDerivatives" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestRateDerivativesAbstract" xlink:to="loc_hcp_EffectOfDecreaseInInterestRateBy100BasisPointsOnFairValueOfDerivatives" xlink:title="Definition : loc_us-gaap_InterestRateDerivativesAbstract to loc_hcp_EffectOfDecreaseInInterestRateBy100BasisPointsOnFairValueOfDerivatives" xlink:type="arc" use="optional" order="4" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable" xlink:to="loc_us-gaap_StatementEquityComponentsAxis" xlink:title="Definition : loc_us-gaap_DerivativeTable to loc_us-gaap_StatementEquityComponentsAxis" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DerivativeSwapTypeFixedPriceBuySellAmount" xlink:label="loc_hcp_DerivativeSwapTypeFixedPriceBuySellAmount" xlink:title="DerivativeSwapTypeFixedPriceBuySellAmount" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_hcp_DerivativeSwapTypeFixedPriceBuySellAmount" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_hcp_DerivativeSwapTypeFixedPriceBuySellAmount" xlink:type="arc" use="optional" order="5" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:title="Definition : loc_us-gaap_DerivativeTable to loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeAssetNotionalAmount" xlink:label="loc_us-gaap_DerivativeAssetNotionalAmount" xlink:title="DerivativeAssetNotionalAmount" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_us-gaap_DerivativeAssetNotionalAmount" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_us-gaap_DerivativeAssetNotionalAmount" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestRateCashFlowHedgeLiabilityAtFairValue" xlink:label="loc_us-gaap_InterestRateCashFlowHedgeLiabilityAtFairValue" xlink:title="InterestRateCashFlowHedgeLiabilityAtFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_us-gaap_InterestRateCashFlowHedgeLiabilityAtFairValue" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_us-gaap_InterestRateCashFlowHedgeLiabilityAtFairValue" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ForeignCurrencyCashFlowHedgeLiabilityAtFairValue" xlink:label="loc_us-gaap_ForeignCurrencyCashFlowHedgeLiabilityAtFairValue" xlink:title="ForeignCurrencyCashFlowHedgeLiabilityAtFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_us-gaap_ForeignCurrencyCashFlowHedgeLiabilityAtFairValue" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_us-gaap_ForeignCurrencyCashFlowHedgeLiabilityAtFairValue" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NumberOfInterestRateDerivativesHeld" xlink:label="loc_us-gaap_NumberOfInterestRateDerivativesHeld" xlink:title="NumberOfInterestRateDerivativesHeld" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_us-gaap_NumberOfInterestRateDerivativesHeld" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_us-gaap_NumberOfInterestRateDerivativesHeld" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ForeignCurrencyExchangeRateTranslation1" xlink:label="loc_us-gaap_ForeignCurrencyExchangeRateTranslation1" xlink:title="ForeignCurrencyExchangeRateTranslation1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_us-gaap_ForeignCurrencyExchangeRateTranslation1" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_us-gaap_ForeignCurrencyExchangeRateTranslation1" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss" xlink:title="ProfitLoss" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_us-gaap_ProfitLoss" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_us-gaap_ProfitLoss" xlink:type="arc" use="optional" order="11" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GainLossOnInterestRateCashFlowHedgeIneffectiveness" xlink:label="loc_us-gaap_GainLossOnInterestRateCashFlowHedgeIneffectiveness" xlink:title="GainLossOnInterestRateCashFlowHedgeIneffectiveness" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_us-gaap_GainLossOnInterestRateCashFlowHedgeIneffectiveness" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_us-gaap_GainLossOnInterestRateCashFlowHedgeIneffectiveness" xlink:type="arc" use="optional" order="12" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_us-gaap_InterestRateDerivativesAbstract" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_us-gaap_InterestRateDerivativesAbstract" xlink:type="arc" use="optional" order="13" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PositionDomain" xlink:label="loc_us-gaap_PositionDomain" xlink:title="PositionDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PositionAxis" xlink:to="loc_us-gaap_PositionDomain" xlink:title="Definition : loc_us-gaap_PositionAxis to loc_us-gaap_PositionDomain" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_InterestRateSwapEnteredJuly2009MaturityJuly2013Member" xlink:label="loc_hcp_InterestRateSwapEnteredJuly2009MaturityJuly2013Member" xlink:title="InterestRateSwapEnteredJuly2009MaturityJuly2013Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain" xlink:to="loc_hcp_InterestRateSwapEnteredJuly2009MaturityJuly2013Member" xlink:title="Definition : loc_us-gaap_DerivativeContractTypeDomain to loc_hcp_InterestRateSwapEnteredJuly2009MaturityJuly2013Member" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongMember" xlink:label="loc_us-gaap_LongMember" xlink:title="LongMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PositionDomain" xlink:to="loc_us-gaap_LongMember" xlink:title="Definition : loc_us-gaap_PositionDomain to loc_us-gaap_LongMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet" xlink:label="loc_us-gaap_GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet" xlink:title="GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_us-gaap_GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_us-gaap_GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PositionDomain" xlink:label="PositionDomain_3" xlink:title="PositionDomain_3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PositionAxis" xlink:to="PositionDomain_3" xlink:title="Definition : loc_us-gaap_PositionAxis to loc_us-gaap_PositionDomain" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_InterestRateSwapEnteredAugust2009MaturityAugust2011Member" xlink:label="loc_hcp_InterestRateSwapEnteredAugust2009MaturityAugust2011Member" xlink:title="InterestRateSwapEnteredAugust2009MaturityAugust2011Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain" xlink:to="loc_hcp_InterestRateSwapEnteredAugust2009MaturityAugust2011Member" xlink:title="Definition : loc_us-gaap_DerivativeContractTypeDomain to loc_hcp_InterestRateSwapEnteredAugust2009MaturityAugust2011Member" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeCashReceivedOnHedge" xlink:label="loc_us-gaap_DerivativeCashReceivedOnHedge" xlink:title="DerivativeCashReceivedOnHedge" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_us-gaap_DerivativeCashReceivedOnHedge" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_us-gaap_DerivativeCashReceivedOnHedge" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_InterestRateSwapFixedRateForecastedUnsecuredDebtMember" xlink:label="loc_hcp_InterestRateSwapFixedRateForecastedUnsecuredDebtMember" xlink:title="InterestRateSwapFixedRateForecastedUnsecuredDebtMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain" xlink:to="loc_hcp_InterestRateSwapFixedRateForecastedUnsecuredDebtMember" xlink:title="Definition : loc_us-gaap_DerivativeContractTypeDomain to loc_hcp_InterestRateSwapFixedRateForecastedUnsecuredDebtMember" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestRateCashFlowHedgeAssetAtFairValue" xlink:label="loc_us-gaap_InterestRateCashFlowHedgeAssetAtFairValue" xlink:title="InterestRateCashFlowHedgeAssetAtFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_us-gaap_InterestRateCashFlowHedgeAssetAtFairValue" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_us-gaap_InterestRateCashFlowHedgeAssetAtFairValue" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DerivativesHedgeAdditionalReductionInterestIncome" xlink:label="loc_hcp_DerivativesHedgeAdditionalReductionInterestIncome" xlink:title="DerivativesHedgeAdditionalReductionInterestIncome" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_hcp_DerivativesHedgeAdditionalReductionInterestIncome" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_hcp_DerivativesHedgeAdditionalReductionInterestIncome" xlink:type="arc" use="optional" order="8003" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DerivativesHedgeAdditionReductionInterestExpense" xlink:label="loc_hcp_DerivativesHedgeAdditionReductionInterestExpense" xlink:title="DerivativesHedgeAdditionReductionInterestExpense" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_hcp_DerivativesHedgeAdditionReductionInterestExpense" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_hcp_DerivativesHedgeAdditionReductionInterestExpense" xlink:type="arc" use="optional" order="8004" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NumberOfForeignCurrencyDerivativesHeld" xlink:label="loc_us-gaap_NumberOfForeignCurrencyDerivativesHeld" xlink:title="NumberOfForeignCurrencyDerivativesHeld" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_us-gaap_NumberOfForeignCurrencyDerivativesHeld" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_us-gaap_NumberOfForeignCurrencyDerivativesHeld" xlink:type="arc" use="optional" order="8005" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DerivativeSwapTypeFixedPriceSemiAnnualBuySellAmount" xlink:label="loc_hcp_DerivativeSwapTypeFixedPriceSemiAnnualBuySellAmount" xlink:title="DerivativeSwapTypeFixedPriceSemiAnnualBuySellAmount" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems" xlink:to="loc_hcp_DerivativeSwapTypeFixedPriceSemiAnnualBuySellAmount" xlink:title="Definition : loc_us-gaap_DerivativeLineItems to loc_hcp_DerivativeSwapTypeFixedPriceSemiAnnualBuySellAmount" xlink:type="arc" use="optional" order="8006" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureFairValueMeasurementsDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:title="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:title="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:title="Definition : loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeByNatureAxis" xlink:label="loc_us-gaap_DerivativeByNatureAxis" xlink:title="DerivativeByNatureAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain" xlink:title="DerivativeContractTypeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeByNatureAxis" xlink:to="loc_us-gaap_DerivativeContractTypeDomain" xlink:title="Definition : loc_us-gaap_DerivativeByNatureAxis to loc_us-gaap_DerivativeContractTypeDomain" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis" xlink:title="FairValueByMeasurementFrequencyAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain" xlink:title="FairValueMeasurementFrequencyDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain" xlink:title="Definition : loc_us-gaap_FairValueByMeasurementFrequencyAxis to loc_us-gaap_FairValueMeasurementFrequencyDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:title="FairValueByFairValueHierarchyLevelAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:title="FairValueMeasurementsFairValueHierarchyDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:title="Definition : loc_us-gaap_FairValueByFairValueHierarchyLevelAxis to loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:label="loc_us-gaap_InterestRateSwapMember" xlink:title="InterestRateSwapMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain" xlink:to="loc_us-gaap_InterestRateSwapMember" xlink:title="Definition : loc_us-gaap_DerivativeContractTypeDomain to loc_us-gaap_InterestRateSwapMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember" xlink:title="FairValueMeasurementsRecurringMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember" xlink:title="Definition : loc_us-gaap_FairValueMeasurementFrequencyDomain to loc_us-gaap_FairValueMeasurementsRecurringMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:title="EstimateOfFairValueFairValueDisclosureMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:title="Definition : loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain to loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAbstract" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAbstract" xlink:title="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecurities" xlink:title="AvailableForSaleSecurities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAbstract" xlink:to="loc_us-gaap_AvailableForSaleSecurities" xlink:title="Definition : loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAbstract to loc_us-gaap_AvailableForSaleSecurities" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis" xlink:title="Definition : loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable to loc_us-gaap_FairValueByMeasurementFrequencyAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="DerivativeContractTypeDomain_1" xlink:title="DerivativeContractTypeDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeByNatureAxis" xlink:to="DerivativeContractTypeDomain_1" xlink:title="Definition : loc_us-gaap_DerivativeByNatureAxis to loc_us-gaap_DerivativeContractTypeDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="FairValueMeasurementFrequencyDomain_2" xlink:title="FairValueMeasurementFrequencyDomain_2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis" xlink:to="FairValueMeasurementFrequencyDomain_2" xlink:title="Definition : loc_us-gaap_FairValueByMeasurementFrequencyAxis to loc_us-gaap_FairValueMeasurementFrequencyDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="FairValueMeasurementsFairValueHierarchyDomain_3" xlink:title="FairValueMeasurementsFairValueHierarchyDomain_3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="FairValueMeasurementsFairValueHierarchyDomain_3" xlink:title="Definition : loc_us-gaap_FairValueByFairValueHierarchyLevelAxis to loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CurrencySwapMember" xlink:label="loc_us-gaap_CurrencySwapMember" xlink:title="CurrencySwapMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain" xlink:to="loc_us-gaap_CurrencySwapMember" xlink:title="Definition : loc_us-gaap_DerivativeContractTypeDomain to loc_us-gaap_CurrencySwapMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member" xlink:title="FairValueInputsLevel1Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="loc_us-gaap_FairValueInputsLevel1Member" xlink:title="Definition : loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain to loc_us-gaap_FairValueInputsLevel1Member" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAbstract" xlink:title="Definition : loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAbstract" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeAssets" xlink:label="loc_us-gaap_DerivativeAssets" xlink:title="DerivativeAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAbstract" xlink:to="loc_us-gaap_DerivativeAssets" xlink:title="Definition : loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAbstract to loc_us-gaap_DerivativeAssets" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:title="Definition : loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable to loc_us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_WarrantMember" xlink:label="loc_us-gaap_WarrantMember" xlink:title="WarrantMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain" xlink:to="loc_us-gaap_WarrantMember" xlink:title="Definition : loc_us-gaap_DerivativeContractTypeDomain to loc_us-gaap_WarrantMember" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member" xlink:title="FairValueInputsLevel2Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="loc_us-gaap_FairValueInputsLevel2Member" xlink:title="Definition : loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain to loc_us-gaap_FairValueInputsLevel2Member" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:label="loc_us-gaap_DerivativeLiabilities" xlink:title="DerivativeLiabilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAbstract" xlink:to="loc_us-gaap_DerivativeLiabilities" xlink:title="Definition : loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAbstract to loc_us-gaap_DerivativeLiabilities" xlink:type="arc" use="optional" order="3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="loc_us-gaap_DerivativeByNatureAxis" xlink:title="Definition : loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable to loc_us-gaap_DerivativeByNatureAxis" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member" xlink:title="FairValueInputsLevel3Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="loc_us-gaap_FairValueInputsLevel3Member" xlink:title="Definition : loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain to loc_us-gaap_FairValueInputsLevel3Member" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AssetsNet" xlink:label="loc_us-gaap_AssetsNet" xlink:title="AssetsNet" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAbstract" xlink:to="loc_us-gaap_AssetsNet" xlink:title="Definition : loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAbstract to loc_us-gaap_AssetsNet" xlink:type="arc" use="optional" order="4" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureDisclosuresAboutFairValueOfFinancialInstrumentsDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:title="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTable" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable" xlink:title="FairValueByBalanceSheetGroupingTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable" xlink:title="Definition : loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to loc_us-gaap_FairValueByBalanceSheetGroupingTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeByNatureAxis" xlink:label="loc_us-gaap_DerivativeByNatureAxis" xlink:title="DerivativeByNatureAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain" xlink:title="DerivativeContractTypeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeByNatureAxis" xlink:to="loc_us-gaap_DerivativeContractTypeDomain" xlink:title="Definition : loc_us-gaap_DerivativeByNatureAxis to loc_us-gaap_DerivativeContractTypeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:title="FairValueByFairValueHierarchyLevelAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:title="FairValueMeasurementsFairValueHierarchyDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:title="Definition : loc_us-gaap_FairValueByFairValueHierarchyLevelAxis to loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis" xlink:title="FairValueByMeasurementBasisAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain" xlink:title="FairValueDisclosureItemAmountsDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain" xlink:title="Definition : loc_us-gaap_FairValueByMeasurementBasisAxis to loc_us-gaap_FairValueDisclosureItemAmountsDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_WarrantMember" xlink:label="loc_us-gaap_WarrantMember" xlink:title="WarrantMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain" xlink:to="loc_us-gaap_WarrantMember" xlink:title="Definition : loc_us-gaap_DerivativeContractTypeDomain to loc_us-gaap_WarrantMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member" xlink:title="FairValueInputsLevel1Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="loc_us-gaap_FairValueInputsLevel1Member" xlink:title="Definition : loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain to loc_us-gaap_FairValueInputsLevel1Member" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:title="CarryingReportedAmountFairValueDisclosureMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:title="Definition : loc_us-gaap_FairValueDisclosureItemAmountsDomain to loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:type="arc" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis" xlink:title="Definition : loc_us-gaap_FairValueByBalanceSheetGroupingTable to loc_us-gaap_FairValueByMeasurementBasisAxis" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="FairValueDisclosureItemAmountsDomain_1" xlink:title="FairValueDisclosureItemAmountsDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis" xlink:to="FairValueDisclosureItemAmountsDomain_1" xlink:title="Definition : loc_us-gaap_FairValueByMeasurementBasisAxis to loc_us-gaap_FairValueDisclosureItemAmountsDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:label="loc_us-gaap_InterestRateSwapMember" xlink:title="InterestRateSwapMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain" xlink:to="loc_us-gaap_InterestRateSwapMember" xlink:title="Definition : loc_us-gaap_DerivativeContractTypeDomain to loc_us-gaap_InterestRateSwapMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member" xlink:title="FairValueInputsLevel2Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="loc_us-gaap_FairValueInputsLevel2Member" xlink:title="Definition : loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain to loc_us-gaap_FairValueInputsLevel2Member" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:title="EstimateOfFairValueFairValueDisclosureMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:title="Definition : loc_us-gaap_FairValueDisclosureItemAmountsDomain to loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:type="arc" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LoansReceivableFairValueDisclosure" xlink:label="loc_us-gaap_LoansReceivableFairValueDisclosure" xlink:title="LoansReceivableFairValueDisclosure" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="loc_us-gaap_LoansReceivableFairValueDisclosure" xlink:title="Definition : loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to loc_us-gaap_LoansReceivableFairValueDisclosure" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable" xlink:to="loc_us-gaap_DerivativeByNatureAxis" xlink:title="Definition : loc_us-gaap_FairValueByBalanceSheetGroupingTable to loc_us-gaap_DerivativeByNatureAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CurrencySwapMember" xlink:label="loc_us-gaap_CurrencySwapMember" xlink:title="CurrencySwapMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain" xlink:to="loc_us-gaap_CurrencySwapMember" xlink:title="Definition : loc_us-gaap_DerivativeContractTypeDomain to loc_us-gaap_CurrencySwapMember" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member" xlink:title="FairValueInputsLevel3Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="loc_us-gaap_FairValueInputsLevel3Member" xlink:title="Definition : loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain to loc_us-gaap_FairValueInputsLevel3Member" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_HeldToMaturitySecuritiesFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesFairValue" xlink:title="HeldToMaturitySecuritiesFairValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesFairValue" xlink:title="Definition : loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to loc_us-gaap_HeldToMaturitySecuritiesFairValue" xlink:type="arc" use="optional" order="3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:title="Definition : loc_us-gaap_FairValueByBalanceSheetGroupingTable to loc_us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecurities" xlink:title="AvailableForSaleSecurities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="loc_us-gaap_AvailableForSaleSecurities" xlink:title="Definition : loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to loc_us-gaap_AvailableForSaleSecurities" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermLoansFromBank" xlink:label="loc_us-gaap_LongTermLoansFromBank" xlink:title="LongTermLoansFromBank" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="loc_us-gaap_LongTermLoansFromBank" xlink:title="Definition : loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to loc_us-gaap_LongTermLoansFromBank" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UnsecuredDebt" xlink:label="loc_us-gaap_UnsecuredDebt" xlink:title="UnsecuredDebt" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="loc_us-gaap_UnsecuredDebt" xlink:title="Definition : loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to loc_us-gaap_UnsecuredDebt" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SecuredDebt" xlink:label="loc_us-gaap_SecuredDebt" xlink:title="SecuredDebt" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="loc_us-gaap_SecuredDebt" xlink:title="Definition : loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to loc_us-gaap_SecuredDebt" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherBorrowings" xlink:label="loc_us-gaap_OtherBorrowings" xlink:title="OtherBorrowings" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="loc_us-gaap_OtherBorrowings" xlink:title="Definition : loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to loc_us-gaap_OtherBorrowings" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeAssets" xlink:label="loc_us-gaap_DerivativeAssets" xlink:title="DerivativeAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="loc_us-gaap_DerivativeAssets" xlink:title="Definition : loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to loc_us-gaap_DerivativeAssets" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:label="loc_us-gaap_DerivativeLiabilities" xlink:title="DerivativeLiabilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="loc_us-gaap_DerivativeLiabilities" xlink:title="Definition : loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to loc_us-gaap_DerivativeLiabilities" xlink:type="arc" use="optional" order="10" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureSegmentDisclosuresDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems" xlink:title="SegmentReportingInformationLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:title="ScheduleOfSegmentReportingInformationBySegmentTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:title="Definition : loc_us-gaap_SegmentReportingInformationLineItems to loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingMember" xlink:label="loc_hcp_SeniorHousingMember" xlink:title="SeniorHousingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentReportingInformationRevenueAbstract" xlink:label="loc_us-gaap_SegmentReportingInformationRevenueAbstract" xlink:title="SegmentReportingInformationRevenueAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NumberOfOperatingSegments" xlink:label="loc_us-gaap_NumberOfOperatingSegments" xlink:title="NumberOfOperatingSegments" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="loc_us-gaap_NumberOfOperatingSegments" xlink:title="Definition : loc_us-gaap_SegmentReportingInformationRevenueAbstract to loc_us-gaap_NumberOfOperatingSegments" xlink:type="arc" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="SegmentDomain_1" xlink:title="SegmentDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="SegmentDomain_1" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PostAcuteAndSkilledNursingMember" xlink:label="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="PostAcuteAndSkilledNursingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_PostAcuteAndSkilledNursingMember" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems" xlink:to="loc_us-gaap_SegmentReportingInformationRevenueAbstract" xlink:title="Definition : loc_us-gaap_SegmentReportingInformationLineItems to loc_us-gaap_SegmentReportingInformationRevenueAbstract" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RentalRevenues" xlink:label="loc_hcp_RentalRevenues" xlink:title="RentalRevenues" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="loc_hcp_RentalRevenues" xlink:title="Definition : loc_us-gaap_SegmentReportingInformationRevenueAbstract to loc_hcp_RentalRevenues" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LifescienceMember" xlink:label="loc_hcp_LifescienceMember" xlink:title="LifescienceMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_LifescienceMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_LifescienceMember" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_HealthCareOrganizationResidentServiceRevenue" xlink:label="loc_us-gaap_HealthCareOrganizationResidentServiceRevenue" xlink:title="HealthCareOrganizationResidentServiceRevenue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="loc_us-gaap_HealthCareOrganizationResidentServiceRevenue" xlink:title="Definition : loc_us-gaap_SegmentReportingInformationRevenueAbstract to loc_us-gaap_HealthCareOrganizationResidentServiceRevenue" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MedicalOfficeMember" xlink:label="loc_hcp_MedicalOfficeMember" xlink:title="MedicalOfficeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_MedicalOfficeMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_MedicalOfficeMember" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestIncomeOperating" xlink:label="loc_us-gaap_InterestIncomeOperating" xlink:title="InterestIncomeOperating" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="loc_us-gaap_InterestIncomeOperating" xlink:title="Definition : loc_us-gaap_SegmentReportingInformationRevenueAbstract to loc_us-gaap_InterestIncomeOperating" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HospitalMember" xlink:label="loc_hcp_HospitalMember" xlink:title="HospitalMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_HospitalMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_HospitalMember" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ManagementFeesRevenue" xlink:label="loc_us-gaap_ManagementFeesRevenue" xlink:title="ManagementFeesRevenue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="loc_us-gaap_ManagementFeesRevenue" xlink:title="Definition : loc_us-gaap_SegmentReportingInformationRevenueAbstract to loc_us-gaap_ManagementFeesRevenue" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues" xlink:title="Revenues" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="loc_us-gaap_Revenues" xlink:title="Definition : loc_us-gaap_SegmentReportingInformationRevenueAbstract to loc_us-gaap_Revenues" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NetOperatingIncomeFromContinuingOperations" xlink:label="loc_hcp_NetOperatingIncomeFromContinuingOperations" xlink:title="NetOperatingIncomeFromContinuingOperations" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="loc_hcp_NetOperatingIncomeFromContinuingOperations" xlink:title="Definition : loc_us-gaap_SegmentReportingInformationRevenueAbstract to loc_hcp_NetOperatingIncomeFromContinuingOperations" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_AdjustedNetOperatingIncomeFromContinuingOperations" xlink:label="loc_hcp_AdjustedNetOperatingIncomeFromContinuingOperations" xlink:title="AdjustedNetOperatingIncomeFromContinuingOperations" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="loc_hcp_AdjustedNetOperatingIncomeFromContinuingOperations" xlink:title="Definition : loc_us-gaap_SegmentReportingInformationRevenueAbstract to loc_hcp_AdjustedNetOperatingIncomeFromContinuingOperations" xlink:type="arc" use="optional" order="8000" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureLoansReceivableDetails3">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateLineItems" xlink:label="loc_us-gaap_MortgageLoansOnRealEstateLineItems" xlink:title="MortgageLoansOnRealEstateLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateScheduleTable" xlink:label="loc_us-gaap_MortgageLoansOnRealEstateScheduleTable" xlink:title="MortgageLoansOnRealEstateScheduleTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateLineItems" xlink:to="loc_us-gaap_MortgageLoansOnRealEstateScheduleTable" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateLineItems to loc_us-gaap_MortgageLoansOnRealEstateScheduleTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis" xlink:label="loc_us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis" xlink:title="MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:label="loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:title="MortgageLoansOnRealEstateNamePropertyTypeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis" xlink:to="loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis to loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MortgageLoansOnRealEstateInterestOnlyTennesseeMarylandPennsylvaniaAndTexasDue2016Member" xlink:label="loc_hcp_MortgageLoansOnRealEstateInterestOnlyTennesseeMarylandPennsylvaniaAndTexasDue2016Member" xlink:title="MortgageLoansOnRealEstateInterestOnlyTennesseeMarylandPennsylvaniaAndTexasDue2016Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:to="loc_hcp_MortgageLoansOnRealEstateInterestOnlyTennesseeMarylandPennsylvaniaAndTexasDue2016Member" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain to loc_hcp_MortgageLoansOnRealEstateInterestOnlyTennesseeMarylandPennsylvaniaAndTexasDue2016Member" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateScheduleTable" xlink:to="loc_us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateScheduleTable to loc_us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:label="MortgageLoansOnRealEstateNamePropertyTypeDomain_1" xlink:title="MortgageLoansOnRealEstateNamePropertyTypeDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis" xlink:to="MortgageLoansOnRealEstateNamePropertyTypeDomain_1" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis to loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MortgageLoansOnRealEstateInterestAndPrincipalArizonaMinnesotaAndTexasDue2016Member" xlink:label="loc_hcp_MortgageLoansOnRealEstateInterestAndPrincipalArizonaMinnesotaAndTexasDue2016Member" xlink:title="MortgageLoansOnRealEstateInterestAndPrincipalArizonaMinnesotaAndTexasDue2016Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:to="loc_hcp_MortgageLoansOnRealEstateInterestAndPrincipalArizonaMinnesotaAndTexasDue2016Member" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain to loc_hcp_MortgageLoansOnRealEstateInterestAndPrincipalArizonaMinnesotaAndTexasDue2016Member" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateNumberOfLoans" xlink:label="loc_us-gaap_MortgageLoansOnRealEstateNumberOfLoans" xlink:title="MortgageLoansOnRealEstateNumberOfLoans" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateLineItems" xlink:to="loc_us-gaap_MortgageLoansOnRealEstateNumberOfLoans" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateLineItems to loc_us-gaap_MortgageLoansOnRealEstateNumberOfLoans" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MortgageLoansOnRealEstateInterestOnlyNewJerseyAndPennsylvaniaDue2017Member" xlink:label="loc_hcp_MortgageLoansOnRealEstateInterestOnlyNewJerseyAndPennsylvaniaDue2017Member" xlink:title="MortgageLoansOnRealEstateInterestOnlyNewJerseyAndPennsylvaniaDue2017Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:to="loc_hcp_MortgageLoansOnRealEstateInterestOnlyNewJerseyAndPennsylvaniaDue2017Member" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain to loc_hcp_MortgageLoansOnRealEstateInterestOnlyNewJerseyAndPennsylvaniaDue2017Member" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MortgageLoansOnRealEstateMonthlyInterestOnlyPaymentReceivable" xlink:label="loc_hcp_MortgageLoansOnRealEstateMonthlyInterestOnlyPaymentReceivable" xlink:title="MortgageLoansOnRealEstateMonthlyInterestOnlyPaymentReceivable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateLineItems" xlink:to="loc_hcp_MortgageLoansOnRealEstateMonthlyInterestOnlyPaymentReceivable" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateLineItems to loc_hcp_MortgageLoansOnRealEstateMonthlyInterestOnlyPaymentReceivable" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MortgageLoansOnRealEstateInterestOnlyPennsylvaniaDue2018Member" xlink:label="loc_hcp_MortgageLoansOnRealEstateInterestOnlyPennsylvaniaDue2018Member" xlink:title="MortgageLoansOnRealEstateInterestOnlyPennsylvaniaDue2018Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:to="loc_hcp_MortgageLoansOnRealEstateInterestOnlyPennsylvaniaDue2018Member" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain to loc_hcp_MortgageLoansOnRealEstateInterestOnlyPennsylvaniaDue2018Member" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateInterestRate" xlink:label="loc_us-gaap_MortgageLoansOnRealEstateInterestRate" xlink:title="MortgageLoansOnRealEstateInterestRate" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateLineItems" xlink:to="loc_us-gaap_MortgageLoansOnRealEstateInterestRate" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateLineItems to loc_us-gaap_MortgageLoansOnRealEstateInterestRate" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MortgageLoansOnRealEstateInterestOnlyTNMDPAAndTXDue2016AndMortgageLoansOnRealEstateInterestOnlyNJAndPADue2017AndMortgageLoansOnRealEstateInterestOnlyPADue2018Member" xlink:label="loc_hcp_MortgageLoansOnRealEstateInterestOnlyTNMDPAAndTXDue2016AndMortgageLoansOnRealEstateInterestOnlyNJAndPADue2017AndMortgageLoansOnRealEstateInterestOnlyPADue2018Member" xlink:title="MortgageLoansOnRealEstateInterestOnlyTNMDPAAndTXDue2016AndMortgageLoansOnRealEstateInterestOnlyNJAndPADue2017AndMortgageLoansOnRealEstateInterestOnlyPADue2018Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:to="loc_hcp_MortgageLoansOnRealEstateInterestOnlyTNMDPAAndTXDue2016AndMortgageLoansOnRealEstateInterestOnlyNJAndPADue2017AndMortgageLoansOnRealEstateInterestOnlyPADue2018Member" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain to loc_hcp_MortgageLoansOnRealEstateInterestOnlyTNMDPAAndTXDue2016AndMortgageLoansOnRealEstateInterestOnlyNJAndPADue2017AndMortgageLoansOnRealEstateInterestOnlyPADue2018Member" xlink:type="arc" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages" xlink:label="loc_us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages" xlink:title="MortgageLoansOnRealEstateFaceAmountOfMortgages" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateLineItems" xlink:to="loc_us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateLineItems to loc_us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CollateralFacilitiesNumber" xlink:label="loc_hcp_CollateralFacilitiesNumber" xlink:title="CollateralFacilitiesNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateLineItems" xlink:to="loc_hcp_CollateralFacilitiesNumber" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateLineItems to loc_hcp_CollateralFacilitiesNumber" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages" xlink:label="loc_us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages" xlink:title="MortgageLoansOnRealEstateCarryingAmountOfMortgages" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateLineItems" xlink:to="loc_us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateLineItems to loc_us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LoanReceivableCommitmentToFinanceDevelopmentProjects" xlink:label="loc_hcp_LoanReceivableCommitmentToFinanceDevelopmentProjects" xlink:title="LoanReceivableCommitmentToFinanceDevelopmentProjects" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateLineItems" xlink:to="loc_hcp_LoanReceivableCommitmentToFinanceDevelopmentProjects" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateLineItems to loc_hcp_LoanReceivableCommitmentToFinanceDevelopmentProjects" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DevelopmentProjectsNumber" xlink:label="loc_hcp_DevelopmentProjectsNumber" xlink:title="DevelopmentProjectsNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateLineItems" xlink:to="loc_hcp_DevelopmentProjectsNumber" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateLineItems to loc_hcp_DevelopmentProjectsNumber" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearThree" xlink:label="loc_hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearThree" xlink:title="MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearThree" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateLineItems" xlink:to="loc_hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearThree" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateLineItems to loc_hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearThree" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearFour" xlink:label="loc_hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearFour" xlink:title="MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearFour" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateLineItems" xlink:to="loc_hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearFour" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateLineItems to loc_hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearFour" xlink:type="arc" use="optional" order="11" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearFive" xlink:label="loc_hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearFive" xlink:title="MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearFive" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateLineItems" xlink:to="loc_hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearFive" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateLineItems to loc_hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearFive" xlink:type="arc" use="optional" order="12" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MortgageLoansOnRealEstateInterestOnlyTennesseeMarylandPennsylvaniaAndTexasDue2016AndMortgageLoansOnRealEstateInterestOnlyNewJerseyAndPennsylvaniaDue2017Member" xlink:label="loc_hcp_MortgageLoansOnRealEstateInterestOnlyTennesseeMarylandPennsylvaniaAndTexasDue2016AndMortgageLoansOnRealEstateInterestOnlyNewJerseyAndPennsylvaniaDue2017Member" xlink:title="MortgageLoansOnRealEstateInterestOnlyTennesseeMarylandPennsylvaniaAndTexasDue2016AndMortgageLoansOnRealEstateInterestOnlyNewJerseyAndPennsylvaniaDue2017Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:to="loc_hcp_MortgageLoansOnRealEstateInterestOnlyTennesseeMarylandPennsylvaniaAndTexasDue2016AndMortgageLoansOnRealEstateInterestOnlyNewJerseyAndPennsylvaniaDue2017Member" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain to loc_hcp_MortgageLoansOnRealEstateInterestOnlyTennesseeMarylandPennsylvaniaAndTexasDue2016AndMortgageLoansOnRealEstateInterestOnlyNewJerseyAndPennsylvaniaDue2017Member" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInNextFiscalYear" xlink:label="loc_hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInNextFiscalYear" xlink:title="MortgageLoansReceivableFutureMinimumPaymentsReceivableInNextFiscalYear" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateLineItems" xlink:to="loc_hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInNextFiscalYear" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateLineItems to loc_hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInNextFiscalYear" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MortgageLoansOnRealEstateInterestOnlyLouisianaDue2015Member" xlink:label="loc_hcp_MortgageLoansOnRealEstateInterestOnlyLouisianaDue2015Member" xlink:title="MortgageLoansOnRealEstateInterestOnlyLouisianaDue2015Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:to="loc_hcp_MortgageLoansOnRealEstateInterestOnlyLouisianaDue2015Member" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain to loc_hcp_MortgageLoansOnRealEstateInterestOnlyLouisianaDue2015Member" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearTwo" xlink:label="loc_hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearTwo" xlink:title="MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearTwo" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateLineItems" xlink:to="loc_hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearTwo" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateLineItems to loc_hcp_MortgageLoansReceivableFutureMinimumPaymentsReceivableInYearTwo" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MortgageLoansOnRealEstateInterestAndPrincipalAlabamaArizonaMinnesotaMarylandTexasAndWisconsinDue2016Member" xlink:label="loc_hcp_MortgageLoansOnRealEstateInterestAndPrincipalAlabamaArizonaMinnesotaMarylandTexasAndWisconsinDue2016Member" xlink:title="MortgageLoansOnRealEstateInterestAndPrincipalAlabamaArizonaMinnesotaMarylandTexasAndWisconsinDue2016Member" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:to="loc_hcp_MortgageLoansOnRealEstateInterestAndPrincipalAlabamaArizonaMinnesotaMarylandTexasAndWisconsinDue2016Member" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain to loc_hcp_MortgageLoansOnRealEstateInterestAndPrincipalAlabamaArizonaMinnesotaMarylandTexasAndWisconsinDue2016Member" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MortgageLoansOnRealEstateInterestAndPrincipalPaymentReceivable" xlink:label="loc_hcp_MortgageLoansOnRealEstateInterestAndPrincipalPaymentReceivable" xlink:title="MortgageLoansOnRealEstateInterestAndPrincipalPaymentReceivable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageLoansOnRealEstateLineItems" xlink:to="loc_hcp_MortgageLoansOnRealEstateInterestAndPrincipalPaymentReceivable" xlink:title="Definition : loc_us-gaap_MortgageLoansOnRealEstateLineItems to loc_hcp_MortgageLoansOnRealEstateInterestAndPrincipalPaymentReceivable" xlink:type="arc" use="optional" order="8002" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureCommitmentsAndContingenciesDetails2">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems" xlink:title="LossContingenciesLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable" xlink:title="LossContingenciesTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_us-gaap_LossContingenciesTable" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_us-gaap_LossContingenciesTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LitigationCaseAxis" xlink:label="loc_us-gaap_LitigationCaseAxis" xlink:title="LitigationCaseAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LitigationCaseTypeDomain" xlink:label="loc_us-gaap_LitigationCaseTypeDomain" xlink:title="LitigationCaseTypeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LitigationCaseAxis" xlink:to="loc_us-gaap_LitigationCaseTypeDomain" xlink:title="Definition : loc_us-gaap_LitigationCaseAxis to loc_us-gaap_LitigationCaseTypeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_VentasIncMember" xlink:label="loc_hcp_VentasIncMember" xlink:title="VentasIncMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LitigationCaseTypeDomain" xlink:to="loc_hcp_VentasIncMember" xlink:title="Definition : loc_us-gaap_LitigationCaseTypeDomain to loc_hcp_VentasIncMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable" xlink:to="loc_us-gaap_LitigationCaseAxis" xlink:title="Definition : loc_us-gaap_LossContingenciesTable to loc_us-gaap_LitigationCaseAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LitigationCaseTypeDomain" xlink:label="LitigationCaseTypeDomain_1" xlink:title="LitigationCaseTypeDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LitigationCaseAxis" xlink:to="LitigationCaseTypeDomain_1" xlink:title="Definition : loc_us-gaap_LitigationCaseAxis to loc_us-gaap_LitigationCaseTypeDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LossContingencyDamagesSoughtValue" xlink:label="loc_us-gaap_LossContingencyDamagesSoughtValue" xlink:title="LossContingencyDamagesSoughtValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_us-gaap_LossContingencyDamagesSoughtValue" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_us-gaap_LossContingencyDamagesSoughtValue" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LossContingencyVerdictCompensatoryDamages" xlink:label="loc_hcp_LossContingencyVerdictCompensatoryDamages" xlink:title="LossContingencyVerdictCompensatoryDamages" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_hcp_LossContingencyVerdictCompensatoryDamages" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_hcp_LossContingencyVerdictCompensatoryDamages" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LitigationSettlementExpense" xlink:label="loc_us-gaap_LitigationSettlementExpense" xlink:title="LitigationSettlementExpense" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_us-gaap_LitigationSettlementExpense" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_us-gaap_LitigationSettlementExpense" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsForLegalSettlements" xlink:label="loc_us-gaap_PaymentsForLegalSettlements" xlink:title="PaymentsForLegalSettlements" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_us-gaap_PaymentsForLegalSettlements" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_us-gaap_PaymentsForLegalSettlements" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SunriseSeniorLivingIncMember" xlink:label="loc_hcp_SunriseSeniorLivingIncMember" xlink:title="SunriseSeniorLivingIncMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LitigationCaseTypeDomain" xlink:to="loc_hcp_SunriseSeniorLivingIncMember" xlink:title="Definition : loc_us-gaap_LitigationCaseTypeDomain to loc_hcp_SunriseSeniorLivingIncMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_TenantsFiledComplaintsWithEntitySubsidiariesNumber" xlink:label="loc_hcp_TenantsFiledComplaintsWithEntitySubsidiariesNumber" xlink:title="TenantsFiledComplaintsWithEntitySubsidiariesNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_hcp_TenantsFiledComplaintsWithEntitySubsidiariesNumber" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_hcp_TenantsFiledComplaintsWithEntitySubsidiariesNumber" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SubsidiariesOfOtherPartyIncludedInComplaintNumber" xlink:label="loc_hcp_SubsidiariesOfOtherPartyIncludedInComplaintNumber" xlink:title="SubsidiariesOfOtherPartyIncludedInComplaintNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_hcp_SubsidiariesOfOtherPartyIncludedInComplaintNumber" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_hcp_SubsidiariesOfOtherPartyIncludedInComplaintNumber" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LossContingencyFiledComplaintsMovedNumber" xlink:label="loc_hcp_LossContingencyFiledComplaintsMovedNumber" xlink:title="LossContingencyFiledComplaintsMovedNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_hcp_LossContingencyFiledComplaintsMovedNumber" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_hcp_LossContingencyFiledComplaintsMovedNumber" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CommunitiesAssociatedWithFiledComplaintsMovedNumber" xlink:label="loc_hcp_CommunitiesAssociatedWithFiledComplaintsMovedNumber" xlink:title="CommunitiesAssociatedWithFiledComplaintsMovedNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_hcp_CommunitiesAssociatedWithFiledComplaintsMovedNumber" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_hcp_CommunitiesAssociatedWithFiledComplaintsMovedNumber" xlink:type="arc" use="optional" order="8003" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CommunitiesSubjectToDisputeNumber" xlink:label="loc_hcp_CommunitiesSubjectToDisputeNumber" xlink:title="CommunitiesSubjectToDisputeNumber" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="loc_hcp_CommunitiesSubjectToDisputeNumber" xlink:title="Definition : loc_us-gaap_LossContingenciesLineItems to loc_hcp_CommunitiesSubjectToDisputeNumber" xlink:type="arc" use="optional" order="8004" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureEarningsPerCommonShareDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:title="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:title="ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:title="Definition : loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems to loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:title="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain" xlink:title="AntidilutiveSecuritiesNameDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain" xlink:title="Definition : loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis to loc_us-gaap_AntidilutiveSecuritiesNameDomain" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember" xlink:title="EmployeeStockOptionMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain" xlink:to="loc_us-gaap_EmployeeStockOptionMember" xlink:title="Definition : loc_us-gaap_AntidilutiveSecuritiesNameDomain to loc_us-gaap_EmployeeStockOptionMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract" xlink:title="NetIncomeLossAvailableToCommonStockholdersBasicAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:title="IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:title="Definition : loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract to loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract" xlink:label="loc_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract" xlink:title="EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:title="WeightedAverageNumberOfSharesOutstandingBasic" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:title="Definition : loc_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract to loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerShareBasicAbstract" xlink:label="loc_us-gaap_EarningsPerShareBasicAbstract" xlink:title="EarningsPerShareBasicAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsPerBasicShare" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare" xlink:title="IncomeLossFromContinuingOperationsPerBasicShare" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare" xlink:title="Definition : loc_us-gaap_EarningsPerShareBasicAbstract to loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerShareDilutedAbstract" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract" xlink:title="EarningsPerShareDilutedAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare" xlink:title="IncomeLossFromContinuingOperationsPerDilutedShare" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare" xlink:title="Definition : loc_us-gaap_EarningsPerShareDilutedAbstract to loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable to loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="AntidilutiveSecuritiesNameDomain_1" xlink:title="AntidilutiveSecuritiesNameDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:to="AntidilutiveSecuritiesNameDomain_1" xlink:title="Definition : loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis to loc_us-gaap_AntidilutiveSecuritiesNameDomain" xlink:type="arc" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RestrictedStockAndRestrictedStockUnitMember" xlink:label="loc_hcp_RestrictedStockAndRestrictedStockUnitMember" xlink:title="RestrictedStockAndRestrictedStockUnitMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain" xlink:to="loc_hcp_RestrictedStockAndRestrictedStockUnitMember" xlink:title="Definition : loc_us-gaap_AntidilutiveSecuritiesNameDomain to loc_hcp_RestrictedStockAndRestrictedStockUnitMember" xlink:type="arc" use="optional" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract" xlink:title="Definition : loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems to loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity" xlink:title="IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity" xlink:title="Definition : loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract to loc_us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:label="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:title="WeightedAverageNumberDilutedSharesOutstandingAdjustment" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract" xlink:to="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:title="Definition : loc_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract to loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare" xlink:title="IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare" xlink:title="Definition : loc_us-gaap_EarningsPerShareBasicAbstract to loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare" xlink:title="IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare" xlink:title="Definition : loc_us-gaap_EarningsPerShareDilutedAbstract to loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DownREITMember" xlink:label="loc_hcp_DownREITMember" xlink:title="DownREITMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain" xlink:to="loc_hcp_DownREITMember" xlink:title="Definition : loc_us-gaap_AntidilutiveSecuritiesNameDomain to loc_hcp_DownREITMember" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromContinuingOperations" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperations" xlink:title="IncomeLossFromContinuingOperations" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperations" xlink:title="Definition : loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract to loc_us-gaap_IncomeLossFromContinuingOperations" xlink:type="arc" use="optional" order="3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:to="loc_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract" xlink:title="Definition : loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems to loc_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:title="WeightedAverageNumberOfDilutedSharesOutstanding" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:title="Definition : loc_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract to loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic" xlink:title="EarningsPerShareBasic" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract" xlink:to="loc_us-gaap_EarningsPerShareBasic" xlink:title="Definition : loc_us-gaap_EarningsPerShareBasicAbstract to loc_us-gaap_EarningsPerShareBasic" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted" xlink:title="EarningsPerShareDiluted" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract" xlink:to="loc_us-gaap_EarningsPerShareDiluted" xlink:title="Definition : loc_us-gaap_EarningsPerShareDilutedAbstract to loc_us-gaap_EarningsPerShareDiluted" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings" xlink:label="loc_us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings" xlink:title="ParticipatingSecuritiesDistributedAndUndistributedEarnings" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract" xlink:to="loc_us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings" xlink:title="Definition : loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract to loc_us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings" xlink:type="arc" use="optional" order="4" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:to="loc_us-gaap_EarningsPerShareBasicAbstract" xlink:title="Definition : loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems to loc_us-gaap_EarningsPerShareBasicAbstract" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NetIncomeLossContinuingOperationsAvailableToCommonStockholdersBasic" xlink:label="loc_hcp_NetIncomeLossContinuingOperationsAvailableToCommonStockholdersBasic" xlink:title="NetIncomeLossContinuingOperationsAvailableToCommonStockholdersBasic" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract" xlink:to="loc_hcp_NetIncomeLossContinuingOperationsAvailableToCommonStockholdersBasic" xlink:title="Definition : loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract to loc_hcp_NetIncomeLossContinuingOperationsAvailableToCommonStockholdersBasic" xlink:type="arc" use="optional" order="5" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:to="loc_us-gaap_EarningsPerShareDilutedAbstract" xlink:title="Definition : loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems to loc_us-gaap_EarningsPerShareDilutedAbstract" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:title="IncomeLossFromDiscontinuedOperationsNetOfTax" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:title="Definition : loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract to loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:title="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:title="Definition : loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems to loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest" xlink:title="IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest" xlink:title="Definition : loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract to loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DownReitLimitedLiabilityCompanyNonmanagingMemberUnitsOutstanding" xlink:label="loc_hcp_DownReitLimitedLiabilityCompanyNonmanagingMemberUnitsOutstanding" xlink:title="DownReitLimitedLiabilityCompanyNonmanagingMemberUnitsOutstanding" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:to="loc_hcp_DownReitLimitedLiabilityCompanyNonmanagingMemberUnitsOutstanding" xlink:title="Definition : loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems to loc_hcp_DownReitLimitedLiabilityCompanyNonmanagingMemberUnitsOutstanding" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:title="NetIncomeLossAvailableToCommonStockholdersBasic" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:title="Definition : loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract to loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DividendsPreferredStock" xlink:label="loc_us-gaap_DividendsPreferredStock" xlink:title="DividendsPreferredStock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract" xlink:to="loc_us-gaap_DividendsPreferredStock" xlink:title="Definition : loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract to loc_us-gaap_DividendsPreferredStock" xlink:type="arc" use="optional" order="8000" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureValuationAndQualifyingAccountsDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:label="loc_us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:title="ValuationAndQualifyingAccountsDisclosureLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ValuationAndQualifyingAccountsDisclosureTable" xlink:label="loc_us-gaap_ValuationAndQualifyingAccountsDisclosureTable" xlink:title="ValuationAndQualifyingAccountsDisclosureTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:to="loc_us-gaap_ValuationAndQualifyingAccountsDisclosureTable" xlink:title="Definition : loc_us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems to loc_us-gaap_ValuationAndQualifyingAccountsDisclosureTable" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:title="ValuationAllowancesAndReservesTypeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain" xlink:title="ValuationAllowancesAndReservesDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain" xlink:title="Definition : loc_us-gaap_ValuationAllowancesAndReservesTypeAxis to loc_us-gaap_ValuationAllowancesAndReservesDomain" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_AllowanceAccountsMember" xlink:label="loc_hcp_AllowanceAccountsMember" xlink:title="AllowanceAccountsMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain" xlink:to="loc_hcp_AllowanceAccountsMember" xlink:title="Definition : loc_us-gaap_ValuationAllowancesAndReservesDomain to loc_hcp_AllowanceAccountsMember" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MovementInValuationAllowancesAndReservesRollForward" xlink:label="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward" xlink:title="MovementInValuationAllowancesAndReservesRollForward" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ValuationAllowancesAndReservesAdditionsAbstract" xlink:label="loc_hcp_ValuationAllowancesAndReservesAdditionsAbstract" xlink:title="ValuationAllowancesAndReservesAdditionsAbstract" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward" xlink:to="loc_hcp_ValuationAllowancesAndReservesAdditionsAbstract" xlink:title="Definition : loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward to loc_hcp_ValuationAllowancesAndReservesAdditionsAbstract" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense" xlink:title="ValuationAllowancesAndReservesChargedToCostAndExpense" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ValuationAllowancesAndReservesAdditionsAbstract" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense" xlink:title="Definition : loc_hcp_ValuationAllowancesAndReservesAdditionsAbstract to loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ValuationAllowancesAndReservesDeductionsAbstract" xlink:label="loc_hcp_ValuationAllowancesAndReservesDeductionsAbstract" xlink:title="ValuationAllowancesAndReservesDeductionsAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDeductions" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDeductions" xlink:title="ValuationAllowancesAndReservesDeductions" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ValuationAllowancesAndReservesDeductionsAbstract" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDeductions" xlink:title="Definition : loc_hcp_ValuationAllowancesAndReservesDeductionsAbstract to loc_us-gaap_ValuationAllowancesAndReservesDeductions" xlink:type="arc" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ValuationAndQualifyingAccountsDisclosureTable" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:title="Definition : loc_us-gaap_ValuationAndQualifyingAccountsDisclosureTable to loc_us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain" xlink:label="ValuationAllowancesAndReservesDomain_1" xlink:title="ValuationAllowancesAndReservesDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:to="ValuationAllowancesAndReservesDomain_1" xlink:title="Definition : loc_us-gaap_ValuationAllowancesAndReservesTypeAxis to loc_us-gaap_ValuationAllowancesAndReservesDomain" xlink:type="arc" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:to="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward" xlink:title="Definition : loc_us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems to loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ValuationAllowancesAndReservesReservesOfPropertiesAcquired" xlink:label="loc_hcp_ValuationAllowancesAndReservesReservesOfPropertiesAcquired" xlink:title="ValuationAllowancesAndReservesReservesOfPropertiesAcquired" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ValuationAllowancesAndReservesAdditionsAbstract" xlink:to="loc_hcp_ValuationAllowancesAndReservesReservesOfPropertiesAcquired" xlink:title="Definition : loc_hcp_ValuationAllowancesAndReservesAdditionsAbstract to loc_hcp_ValuationAllowancesAndReservesReservesOfPropertiesAcquired" xlink:type="arc" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward" xlink:to="loc_hcp_ValuationAllowancesAndReservesDeductionsAbstract" xlink:title="Definition : loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward to loc_hcp_ValuationAllowancesAndReservesDeductionsAbstract" xlink:type="arc" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ValuationAllowancesAndReservesDisposedOrContributedProperties" xlink:label="loc_hcp_ValuationAllowancesAndReservesDisposedOrContributedProperties" xlink:title="ValuationAllowancesAndReservesDisposedOrContributedProperties" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_ValuationAllowancesAndReservesDeductionsAbstract" xlink:to="loc_hcp_ValuationAllowancesAndReservesDisposedOrContributedProperties" xlink:title="Definition : loc_hcp_ValuationAllowancesAndReservesDeductionsAbstract to loc_hcp_ValuationAllowancesAndReservesDisposedOrContributedProperties" xlink:type="arc" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ValuationAllowancesAndReservesBalance" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance" xlink:title="ValuationAllowancesAndReservesBalance" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesBalance" xlink:title="Definition : loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward to loc_us-gaap_ValuationAllowancesAndReservesBalance" xlink:type="arc" order="3" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureRealEstateAndAccumulatedDepreciationDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationLineItems" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationLineItems" xlink:title="RealEstateAndAccumulatedDepreciationLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationByPropertyTable" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationByPropertyTable" xlink:title="RealEstateAndAccumulatedDepreciationByPropertyTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationLineItems" xlink:to="loc_us-gaap_RealEstateAndAccumulatedDepreciationByPropertyTable" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationLineItems to loc_us-gaap_RealEstateAndAccumulatedDepreciationByPropertyTable" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConsolidationItemsAxis" xlink:label="loc_us-gaap_ConsolidationItemsAxis" xlink:title="ConsolidationItemsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain" xlink:title="ConsolidationItemsDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConsolidationItemsAxis" xlink:to="loc_us-gaap_ConsolidationItemsDomain" xlink:title="Definition : loc_us-gaap_ConsolidationItemsAxis to loc_us-gaap_ConsolidationItemsDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:title="RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:title="RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:to="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis to loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingMember" xlink:label="loc_hcp_SeniorHousingMember" xlink:title="SeniorHousingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember" xlink:title="OperatingSegmentsMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidationItemsDomain" xlink:to="loc_us-gaap_OperatingSegmentsMember" xlink:title="Definition : loc_us-gaap_ConsolidationItemsDomain to loc_us-gaap_OperatingSegmentsMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Huntsville1107ALMember" xlink:label="loc_hcp_Huntsville1107ALMember" xlink:title="Huntsville1107ALMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Huntsville1107ALMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Huntsville1107ALMember" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationInitialCostAbstract" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostAbstract" xlink:title="RealEstateAndAccumulatedDepreciationInitialCostAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand" xlink:title="RealEstateAndAccumulatedDepreciationInitialCostOfLand" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostAbstract" xlink:to="loc_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostAbstract to loc_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndBuildingsAndImprovementsAbstract" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndBuildingsAndImprovementsAbstract" xlink:title="RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndBuildingsAndImprovementsAbstract" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand" xlink:title="RealEstateAndAccumulatedDepreciationCarryingAmountOfLand" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndBuildingsAndImprovementsAbstract" xlink:to="loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndBuildingsAndImprovementsAbstract to loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand" xlink:type="arc" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationByPropertyTable" xlink:to="loc_us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationByPropertyTable to loc_us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:type="arc" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:label="RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_1" xlink:title="RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:to="RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_1" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis to loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LifescienceMember" xlink:label="loc_hcp_LifescienceMember" xlink:title="LifescienceMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_LifescienceMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_LifescienceMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="loc_us-gaap_CorporateNonSegmentMember" xlink:title="CorporateNonSegmentMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidationItemsDomain" xlink:to="loc_us-gaap_CorporateNonSegmentMember" xlink:title="Definition : loc_us-gaap_ConsolidationItemsDomain to loc_us-gaap_CorporateNonSegmentMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LittleRock1154ARMember" xlink:label="loc_hcp_LittleRock1154ARMember" xlink:title="LittleRock1154ARMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LittleRock1154ARMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LittleRock1154ARMember" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances" xlink:title="RealEstateAndAccumulatedDepreciationAmountOfEncumbrances" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationLineItems" xlink:to="loc_us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationLineItems to loc_us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements" xlink:title="RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostAbstract" xlink:to="loc_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostAbstract to loc_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements" xlink:type="arc" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements" xlink:title="RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndBuildingsAndImprovementsAbstract" xlink:to="loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndBuildingsAndImprovementsAbstract to loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements" xlink:type="arc" order="2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationByPropertyTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationByPropertyTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MedicalOfficeMember" xlink:label="loc_hcp_MedicalOfficeMember" xlink:title="MedicalOfficeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_MedicalOfficeMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_MedicalOfficeMember" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Douglas786AZMember" xlink:label="loc_hcp_Douglas786AZMember" xlink:title="Douglas786AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Douglas786AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Douglas786AZMember" xlink:type="arc" use="optional" order="3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationLineItems" xlink:to="loc_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostAbstract" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationLineItems to loc_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostAbstract" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateGrossAtCarryingValue" xlink:label="loc_us-gaap_RealEstateGrossAtCarryingValue" xlink:title="RealEstateGrossAtCarryingValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndBuildingsAndImprovementsAbstract" xlink:to="loc_us-gaap_RealEstateGrossAtCarryingValue" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndBuildingsAndImprovementsAbstract to loc_us-gaap_RealEstateGrossAtCarryingValue" xlink:type="arc" order="3" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationByPropertyTable" xlink:to="loc_us-gaap_ConsolidationItemsAxis" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationByPropertyTable to loc_us-gaap_ConsolidationItemsAxis" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PostAcuteAndSkilledNursingMember" xlink:label="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="PostAcuteAndSkilledNursingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_PostAcuteAndSkilledNursingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_PostAcuteAndSkilledNursingMember" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Prescott2087AZMember" xlink:label="loc_hcp_Prescott2087AZMember" xlink:title="Prescott2087AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Prescott2087AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Prescott2087AZMember" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition" xlink:label="loc_hcp_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition" xlink:title="RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationLineItems" xlink:to="loc_hcp_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationLineItems to loc_hcp_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HospitalMember" xlink:label="loc_hcp_HospitalMember" xlink:title="HospitalMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_HospitalMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_HospitalMember" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SunCity1974AZMember" xlink:label="loc_hcp_SunCity1974AZMember" xlink:title="SunCity1974AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SunCity1974AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SunCity1974AZMember" xlink:type="arc" use="optional" order="5" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationLineItems" xlink:to="loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndBuildingsAndImprovementsAbstract" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationLineItems to loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndBuildingsAndImprovementsAbstract" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Tucson518AZMember" xlink:label="loc_hcp_Tucson518AZMember" xlink:title="Tucson518AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Tucson518AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Tucson518AZMember" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAccumulatedDepreciation" xlink:label="loc_us-gaap_RealEstateAccumulatedDepreciation" xlink:title="RealEstateAccumulatedDepreciation" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationLineItems" xlink:to="loc_us-gaap_RealEstateAccumulatedDepreciation" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationLineItems to loc_us-gaap_RealEstateAccumulatedDepreciation" xlink:type="arc" order="6" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BeverlyHills1238CAMember" xlink:label="loc_hcp_BeverlyHills1238CAMember" xlink:title="BeverlyHills1238CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_BeverlyHills1238CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_BeverlyHills1238CAMember" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1" xlink:title="RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationLineItems" xlink:to="loc_us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationLineItems to loc_us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Camarillo1149CAMember" xlink:label="loc_hcp_Camarillo1149CAMember" xlink:title="Camarillo1149CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Camarillo1149CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Camarillo1149CAMember" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Carlsbad1006CAMember" xlink:label="loc_hcp_Carlsbad1006CAMember" xlink:title="Carlsbad1006CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Carlsbad1006CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Carlsbad1006CAMember" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Carmichael883CAMember" xlink:label="loc_hcp_Carmichael883CAMember" xlink:title="Carmichael883CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Carmichael883CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Carmichael883CAMember" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CitrusHeights851CAMember" xlink:label="loc_hcp_CitrusHeights851CAMember" xlink:title="CitrusHeights851CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_CitrusHeights851CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_CitrusHeights851CAMember" xlink:type="arc" use="optional" order="11" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Clearlake2092CAMember" xlink:label="loc_hcp_Clearlake2092CAMember" xlink:title="Clearlake2092CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Clearlake2092CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Clearlake2092CAMember" xlink:type="arc" use="optional" order="12" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Concord790CAMember" xlink:label="loc_hcp_Concord790CAMember" xlink:title="Concord790CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Concord790CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Concord790CAMember" xlink:type="arc" use="optional" order="13" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Corona2181CAMember" xlink:label="loc_hcp_Corona2181CAMember" xlink:title="Corona2181CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Corona2181CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Corona2181CAMember" xlink:type="arc" use="optional" order="14" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DanaPoint787CAMember" xlink:label="loc_hcp_DanaPoint787CAMember" xlink:title="DanaPoint787CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_DanaPoint787CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_DanaPoint787CAMember" xlink:type="arc" use="optional" order="15" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ElkGrove1152CAMember" xlink:label="loc_hcp_ElkGrove1152CAMember" xlink:title="ElkGrove1152CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_ElkGrove1152CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_ElkGrove1152CAMember" xlink:type="arc" use="optional" order="16" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Escondido798CAMember" xlink:label="loc_hcp_Escondido798CAMember" xlink:title="Escondido798CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Escondido798CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Escondido798CAMember" xlink:type="arc" use="optional" order="17" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Fortuna2054CAMember" xlink:label="loc_hcp_Fortuna2054CAMember" xlink:title="Fortuna2054CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Fortuna2054CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Fortuna2054CAMember" xlink:type="arc" use="optional" order="18" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Fortuna2079CAMember" xlink:label="loc_hcp_Fortuna2079CAMember" xlink:title="Fortuna2079CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Fortuna2079CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Fortuna2079CAMember" xlink:type="arc" use="optional" order="19" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Fremont791CAMember" xlink:label="loc_hcp_Fremont791CAMember" xlink:title="Fremont791CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Fremont791CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Fremont791CAMember" xlink:type="arc" use="optional" order="20" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Fresno1965CAMember" xlink:label="loc_hcp_Fresno1965CAMember" xlink:title="Fresno1965CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Fresno1965CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Fresno1965CAMember" xlink:type="arc" use="optional" order="21" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_GranadaHills788CAMember" xlink:label="loc_hcp_GranadaHills788CAMember" xlink:title="GranadaHills788CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_GranadaHills788CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_GranadaHills788CAMember" xlink:type="arc" use="optional" order="22" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hemet1156CAMember" xlink:label="loc_hcp_Hemet1156CAMember" xlink:title="Hemet1156CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hemet1156CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hemet1156CAMember" xlink:type="arc" use="optional" order="23" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Irvine856CAMember" xlink:label="loc_hcp_Irvine856CAMember" xlink:title="Irvine856CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Irvine856CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Irvine856CAMember" xlink:type="arc" use="optional" order="24" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Lodi227CAMember" xlink:label="loc_hcp_Lodi227CAMember" xlink:title="Lodi227CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Lodi227CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Lodi227CAMember" xlink:type="arc" use="optional" order="25" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Murietta226CAMember" xlink:label="loc_hcp_Murietta226CAMember" xlink:title="Murietta226CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Murietta226CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Murietta226CAMember" xlink:type="arc" use="optional" order="26" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Northridge1165CAMember" xlink:label="loc_hcp_Northridge1165CAMember" xlink:title="Northridge1165CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Northridge1165CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Northridge1165CAMember" xlink:type="arc" use="optional" order="27" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Orangevale1561CAMember" xlink:label="loc_hcp_Orangevale1561CAMember" xlink:title="Orangevale1561CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Orangevale1561CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Orangevale1561CAMember" xlink:type="arc" use="optional" order="28" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PalmSprings1168CAMember" xlink:label="loc_hcp_PalmSprings1168CAMember" xlink:title="PalmSprings1168CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_PalmSprings1168CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_PalmSprings1168CAMember" xlink:type="arc" use="optional" order="29" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PleasantHill789CAMember" xlink:label="loc_hcp_PleasantHill789CAMember" xlink:title="PleasantHill789CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_PleasantHill789CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_PleasantHill789CAMember" xlink:type="arc" use="optional" order="30" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RanchoMirage1166CAMember" xlink:label="loc_hcp_RanchoMirage1166CAMember" xlink:title="RanchoMirage1166CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RanchoMirage1166CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RanchoMirage1166CAMember" xlink:type="arc" use="optional" order="31" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Roseville2065CAMember" xlink:label="loc_hcp_Roseville2065CAMember" xlink:title="Roseville2065CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Roseville2065CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Roseville2065CAMember" xlink:type="arc" use="optional" order="32" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego1008CAMember" xlink:label="loc_hcp_SanDiego1008CAMember" xlink:title="SanDiego1008CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego1008CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego1008CAMember" xlink:type="arc" use="optional" order="33" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDimas1007CAMember" xlink:label="loc_hcp_SanDimas1007CAMember" xlink:title="SanDimas1007CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDimas1007CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDimas1007CAMember" xlink:type="arc" use="optional" order="34" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanJuanCapistrano1009CAMember" xlink:label="loc_hcp_SanJuanCapistrano1009CAMember" xlink:title="SanJuanCapistrano1009CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanJuanCapistrano1009CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanJuanCapistrano1009CAMember" xlink:type="arc" use="optional" order="35" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SantaRosa1167CAMember" xlink:label="loc_hcp_SantaRosa1167CAMember" xlink:title="SantaRosa1167CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SantaRosa1167CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SantaRosa1167CAMember" xlink:type="arc" use="optional" order="36" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco793CAMember" xlink:label="loc_hcp_SouthSanFrancisco793CAMember" xlink:title="SouthSanFrancisco793CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco793CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco793CAMember" xlink:type="arc" use="optional" order="37" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SunCity1966CAMember" xlink:label="loc_hcp_SunCity1966CAMember" xlink:title="SunCity1966CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SunCity1966CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SunCity1966CAMember" xlink:type="arc" use="optional" order="38" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Ventura792CAMember" xlink:label="loc_hcp_Ventura792CAMember" xlink:title="Ventura792CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Ventura792CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Ventura792CAMember" xlink:type="arc" use="optional" order="39" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_YorbaLinda1155CAMember" xlink:label="loc_hcp_YorbaLinda1155CAMember" xlink:title="YorbaLinda1155CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_YorbaLinda1155CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_YorbaLinda1155CAMember" xlink:type="arc" use="optional" order="40" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Yreka2055CAMember" xlink:label="loc_hcp_Yreka2055CAMember" xlink:title="Yreka2055CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Yreka2055CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Yreka2055CAMember" xlink:type="arc" use="optional" order="41" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ColoradoSprings1232COMember" xlink:label="loc_hcp_ColoradoSprings1232COMember" xlink:title="ColoradoSprings1232COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_ColoradoSprings1232COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_ColoradoSprings1232COMember" xlink:type="arc" use="optional" order="42" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Denver512COMember" xlink:label="loc_hcp_Denver512COMember" xlink:title="Denver512COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Denver512COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Denver512COMember" xlink:type="arc" use="optional" order="43" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Denver1233COMember" xlink:label="loc_hcp_Denver1233COMember" xlink:title="Denver1233COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Denver1233COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Denver1233COMember" xlink:type="arc" use="optional" order="44" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Denver2146COMember" xlink:label="loc_hcp_Denver2146COMember" xlink:title="Denver2146COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Denver2146COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Denver2146COMember" xlink:type="arc" use="optional" order="45" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_GreenwoodVillage1000COMember" xlink:label="loc_hcp_GreenwoodVillage1000COMember" xlink:title="GreenwoodVillage1000COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_GreenwoodVillage1000COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_GreenwoodVillage1000COMember" xlink:type="arc" use="optional" order="46" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Lakewood1234COMember" xlink:label="loc_hcp_Lakewood1234COMember" xlink:title="Lakewood1234COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Lakewood1234COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Lakewood1234COMember" xlink:type="arc" use="optional" order="47" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Montrose2091COMember" xlink:label="loc_hcp_Montrose2091COMember" xlink:title="Montrose2091COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Montrose2091COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Montrose2091COMember" xlink:type="arc" use="optional" order="48" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Glastonbury2085CTMember" xlink:label="loc_hcp_Glastonbury2085CTMember" xlink:title="Glastonbury2085CTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Glastonbury2085CTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Glastonbury2085CTMember" xlink:type="arc" use="optional" order="49" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Glastonbury2144CTMember" xlink:label="loc_hcp_Glastonbury2144CTMember" xlink:title="Glastonbury2144CTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Glastonbury2144CTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Glastonbury2144CTMember" xlink:type="arc" use="optional" order="50" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Torrington730CTMember" xlink:label="loc_hcp_Torrington730CTMember" xlink:title="Torrington730CTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Torrington730CTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Torrington730CTMember" xlink:type="arc" use="optional" order="51" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Woodbridge1010CTMember" xlink:label="loc_hcp_Woodbridge1010CTMember" xlink:title="Woodbridge1010CTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Woodbridge1010CTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Woodbridge1010CTMember" xlink:type="arc" use="optional" order="52" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_AltamonteSprings538FLMember" xlink:label="loc_hcp_AltamonteSprings538FLMember" xlink:title="AltamonteSprings538FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_AltamonteSprings538FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_AltamonteSprings538FLMember" xlink:type="arc" use="optional" order="53" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Apopka861FLMember" xlink:label="loc_hcp_Apopka861FLMember" xlink:title="Apopka861FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Apopka861FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Apopka861FLMember" xlink:type="arc" use="optional" order="54" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BocaRaton852FLMember" xlink:label="loc_hcp_BocaRaton852FLMember" xlink:title="BocaRaton852FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_BocaRaton852FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_BocaRaton852FLMember" xlink:type="arc" use="optional" order="55" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BocaRaton1001FLMember" xlink:label="loc_hcp_BocaRaton1001FLMember" xlink:title="BocaRaton1001FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_BocaRaton1001FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_BocaRaton1001FLMember" xlink:type="arc" use="optional" order="56" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BoyntonBeach544FLMember" xlink:label="loc_hcp_BoyntonBeach544FLMember" xlink:title="BoyntonBeach544FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_BoyntonBeach544FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_BoyntonBeach544FLMember" xlink:type="arc" use="optional" order="57" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BoyntonBeach1963FLMember" xlink:label="loc_hcp_BoyntonBeach1963FLMember" xlink:title="BoyntonBeach1963FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_BoyntonBeach1963FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_BoyntonBeach1963FLMember" xlink:type="arc" use="optional" order="58" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BoyntonBeach1964FLMember" xlink:label="loc_hcp_BoyntonBeach1964FLMember" xlink:title="BoyntonBeach1964FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_BoyntonBeach1964FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_BoyntonBeach1964FLMember" xlink:type="arc" use="optional" order="59" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Clearwater539FLMember" xlink:label="loc_hcp_Clearwater539FLMember" xlink:title="Clearwater539FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Clearwater539FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Clearwater539FLMember" xlink:type="arc" use="optional" order="60" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Clearwater746FLMember" xlink:label="loc_hcp_Clearwater746FLMember" xlink:title="Clearwater746FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Clearwater746FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Clearwater746FLMember" xlink:type="arc" use="optional" order="61" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Clermont862FLMember" xlink:label="loc_hcp_Clermont862FLMember" xlink:title="Clermont862FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Clermont862FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Clermont862FLMember" xlink:type="arc" use="optional" order="62" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CoconutCreek1002FLMember" xlink:label="loc_hcp_CoconutCreek1002FLMember" xlink:title="CoconutCreek1002FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_CoconutCreek1002FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_CoconutCreek1002FLMember" xlink:type="arc" use="optional" order="63" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DelrayBeach492FLMember" xlink:label="loc_hcp_DelrayBeach492FLMember" xlink:title="DelrayBeach492FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_DelrayBeach492FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_DelrayBeach492FLMember" xlink:type="arc" use="optional" order="64" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Gainesville850FLMember" xlink:label="loc_hcp_Gainesville850FLMember" xlink:title="Gainesville850FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Gainesville850FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Gainesville850FLMember" xlink:type="arc" use="optional" order="65" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Gainesville1095FLMember" xlink:label="loc_hcp_Gainesville1095FLMember" xlink:title="Gainesville1095FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Gainesville1095FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Gainesville1095FLMember" xlink:type="arc" use="optional" order="66" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Jacksonville490FLMember" xlink:label="loc_hcp_Jacksonville490FLMember" xlink:title="Jacksonville490FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Jacksonville490FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Jacksonville490FLMember" xlink:type="arc" use="optional" order="67" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Jacksonville1096FLMember" xlink:label="loc_hcp_Jacksonville1096FLMember" xlink:title="Jacksonville1096FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Jacksonville1096FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Jacksonville1096FLMember" xlink:type="arc" use="optional" order="68" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Lantana855FLMember" xlink:label="loc_hcp_Lantana855FLMember" xlink:title="Lantana855FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Lantana855FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Lantana855FLMember" xlink:type="arc" use="optional" order="69" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Largo1968FLMember" xlink:label="loc_hcp_Largo1968FLMember" xlink:title="Largo1968FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Largo1968FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Largo1968FLMember" xlink:type="arc" use="optional" order="70" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Ocoee731FLMember" xlink:label="loc_hcp_Ocoee731FLMember" xlink:title="Ocoee731FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Ocoee731FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Ocoee731FLMember" xlink:type="arc" use="optional" order="71" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Oviedo859FLMember" xlink:label="loc_hcp_Oviedo859FLMember" xlink:title="Oviedo859FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Oviedo859FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Oviedo859FLMember" xlink:type="arc" use="optional" order="72" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PalmBeachGardens1970FLMember" xlink:label="loc_hcp_PalmBeachGardens1970FLMember" xlink:title="PalmBeachGardens1970FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_PalmBeachGardens1970FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_PalmBeachGardens1970FLMember" xlink:type="arc" use="optional" order="73" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PalmHarbor1017FLMember" xlink:label="loc_hcp_PalmHarbor1017FLMember" xlink:title="PalmHarbor1017FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_PalmHarbor1017FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_PalmHarbor1017FLMember" xlink:type="arc" use="optional" order="74" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PortOrange732FLMember" xlink:label="loc_hcp_PortOrange732FLMember" xlink:title="PortOrange732FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_PortOrange732FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_PortOrange732FLMember" xlink:type="arc" use="optional" order="75" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Sarasota1971FLMember" xlink:label="loc_hcp_Sarasota1971FLMember" xlink:title="Sarasota1971FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Sarasota1971FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Sarasota1971FLMember" xlink:type="arc" use="optional" order="76" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_St.Augustine802FLMember" xlink:label="loc_hcp_St.Augustine802FLMember" xlink:title="St.Augustine802FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_St.Augustine802FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_St.Augustine802FLMember" xlink:type="arc" use="optional" order="77" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Springtree2194FLMember" xlink:label="loc_hcp_Springtree2194FLMember" xlink:title="Springtree2194FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Springtree2194FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Springtree2194FLMember" xlink:type="arc" use="optional" order="78" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SunCityCenter692FLMember" xlink:label="loc_hcp_SunCityCenter692FLMember" xlink:title="SunCityCenter692FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SunCityCenter692FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SunCityCenter692FLMember" xlink:type="arc" use="optional" order="79" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SunCityCenter698FLMember" xlink:label="loc_hcp_SunCityCenter698FLMember" xlink:title="SunCityCenter698FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SunCityCenter698FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SunCityCenter698FLMember" xlink:type="arc" use="optional" order="80" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Tallahassee1097FLMember" xlink:label="loc_hcp_Tallahassee1097FLMember" xlink:title="Tallahassee1097FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Tallahassee1097FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Tallahassee1097FLMember" xlink:type="arc" use="optional" order="81" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Tampa224FLMember" xlink:label="loc_hcp_Tampa224FLMember" xlink:title="Tampa224FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Tampa224FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Tampa224FLMember" xlink:type="arc" use="optional" order="82" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Tampa849FLMember" xlink:label="loc_hcp_Tampa849FLMember" xlink:title="Tampa849FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Tampa849FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Tampa849FLMember" xlink:type="arc" use="optional" order="83" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_VeroBeach1257FLMember" xlink:label="loc_hcp_VeroBeach1257FLMember" xlink:title="VeroBeach1257FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_VeroBeach1257FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_VeroBeach1257FLMember" xlink:type="arc" use="optional" order="84" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_VeroBeach1605FLMember" xlink:label="loc_hcp_VeroBeach1605FLMember" xlink:title="VeroBeach1605FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_VeroBeach1605FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_VeroBeach1605FLMember" xlink:type="arc" use="optional" order="85" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_WestPalmBeach1976FLMember" xlink:label="loc_hcp_WestPalmBeach1976FLMember" xlink:title="WestPalmBeach1976FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_WestPalmBeach1976FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_WestPalmBeach1976FLMember" xlink:type="arc" use="optional" order="86" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Alpharetta1098GAMember" xlink:label="loc_hcp_Alpharetta1098GAMember" xlink:title="Alpharetta1098GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Alpharetta1098GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Alpharetta1098GAMember" xlink:type="arc" use="optional" order="87" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Atlanta1099GAMember" xlink:label="loc_hcp_Atlanta1099GAMember" xlink:title="Atlanta1099GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Atlanta1099GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Atlanta1099GAMember" xlink:type="arc" use="optional" order="88" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Atlanta1169GAMember" xlink:label="loc_hcp_Atlanta1169GAMember" xlink:title="Atlanta1169GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Atlanta1169GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Atlanta1169GAMember" xlink:type="arc" use="optional" order="89" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Buford2108GAMember" xlink:label="loc_hcp_Buford2108GAMember" xlink:title="Buford2108GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Buford2108GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Buford2108GAMember" xlink:type="arc" use="optional" order="90" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Buford2109GAMember" xlink:label="loc_hcp_Buford2109GAMember" xlink:title="Buford2109GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Buford2109GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Buford2109GAMember" xlink:type="arc" use="optional" order="91" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Buford2123GAMember" xlink:label="loc_hcp_Buford2123GAMember" xlink:title="Buford2123GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Buford2123GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Buford2123GAMember" xlink:type="arc" use="optional" order="92" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Canton2053GAMember" xlink:label="loc_hcp_Canton2053GAMember" xlink:title="Canton2053GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Canton2053GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Canton2053GAMember" xlink:type="arc" use="optional" order="93" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Commerce2155GAMember" xlink:label="loc_hcp_Commerce2155GAMember" xlink:title="Commerce2155GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Commerce2155GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Commerce2155GAMember" xlink:type="arc" use="optional" order="94" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hartwell2165GAMember" xlink:label="loc_hcp_Hartwell2165GAMember" xlink:title="Hartwell2165GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hartwell2165GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hartwell2165GAMember" xlink:type="arc" use="optional" order="95" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Lawrenceville2066GAMember" xlink:label="loc_hcp_Lawrenceville2066GAMember" xlink:title="Lawrenceville2066GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Lawrenceville2066GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Lawrenceville2066GAMember" xlink:type="arc" use="optional" order="96" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Lilburn1241GAMember" xlink:label="loc_hcp_Lilburn1241GAMember" xlink:title="Lilburn1241GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Lilburn1241GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Lilburn1241GAMember" xlink:type="arc" use="optional" order="97" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LithiaSprings2167GAMember" xlink:label="loc_hcp_LithiaSprings2167GAMember" xlink:title="LithiaSprings2167GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LithiaSprings2167GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LithiaSprings2167GAMember" xlink:type="arc" use="optional" order="98" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Macon2105GAMember" xlink:label="loc_hcp_Macon2105GAMember" xlink:title="Macon2105GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Macon2105GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Macon2105GAMember" xlink:type="arc" use="optional" order="99" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Marietta1112GAMember" xlink:label="loc_hcp_Marietta1112GAMember" xlink:title="Marietta1112GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Marietta1112GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Marietta1112GAMember" xlink:type="arc" use="optional" order="100" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Marietta2156GAMember" xlink:label="loc_hcp_Marietta2156GAMember" xlink:title="Marietta2156GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Marietta2156GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Marietta2156GAMember" xlink:type="arc" use="optional" order="101" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Newnan2086GAMember" xlink:label="loc_hcp_Newnan2086GAMember" xlink:title="Newnan2086GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Newnan2086GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Newnan2086GAMember" xlink:type="arc" use="optional" order="102" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_StoneMountain2147GAMember" xlink:label="loc_hcp_StoneMountain2147GAMember" xlink:title="StoneMountain2147GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_StoneMountain2147GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_StoneMountain2147GAMember" xlink:type="arc" use="optional" order="103" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Woodstock2118GAMember" xlink:label="loc_hcp_Woodstock2118GAMember" xlink:title="Woodstock2118GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Woodstock2118GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Woodstock2118GAMember" xlink:type="arc" use="optional" order="104" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Woodstock2157GAMember" xlink:label="loc_hcp_Woodstock2157GAMember" xlink:title="Woodstock2157GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Woodstock2157GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Woodstock2157GAMember" xlink:type="arc" use="optional" order="105" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Davenport1088IAMember" xlink:label="loc_hcp_Davenport1088IAMember" xlink:title="Davenport1088IAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Davenport1088IAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Davenport1088IAMember" xlink:type="arc" use="optional" order="106" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Marion1093IAMember" xlink:label="loc_hcp_Marion1093IAMember" xlink:title="Marion1093IAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Marion1093IAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Marion1093IAMember" xlink:type="arc" use="optional" order="107" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SiouxCity2166IAMember" xlink:label="loc_hcp_SiouxCity2166IAMember" xlink:title="SiouxCity2166IAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SiouxCity2166IAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SiouxCity2166IAMember" xlink:type="arc" use="optional" order="108" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Bloomington1091ILMember" xlink:label="loc_hcp_Bloomington1091ILMember" xlink:title="Bloomington1091ILMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Bloomington1091ILMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Bloomington1091ILMember" xlink:type="arc" use="optional" order="109" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BurrRidge1587ILMember" xlink:label="loc_hcp_BurrRidge1587ILMember" xlink:title="BurrRidge1587ILMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_BurrRidge1587ILMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_BurrRidge1587ILMember" xlink:type="arc" use="optional" order="110" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Champaign1089ILMember" xlink:label="loc_hcp_Champaign1089ILMember" xlink:title="Champaign1089ILMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Champaign1089ILMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Champaign1089ILMember" xlink:type="arc" use="optional" order="111" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HoffmanEstates1157ILMember" xlink:label="loc_hcp_HoffmanEstates1157ILMember" xlink:title="HoffmanEstates1157ILMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_HoffmanEstates1157ILMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_HoffmanEstates1157ILMember" xlink:type="arc" use="optional" order="112" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Macomb1090ILMember" xlink:label="loc_hcp_Macomb1090ILMember" xlink:title="Macomb1090ILMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Macomb1090ILMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Macomb1090ILMember" xlink:type="arc" use="optional" order="113" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Mt.Vernon1143ILMember" xlink:label="loc_hcp_Mt.Vernon1143ILMember" xlink:title="Mt.Vernon1143ILMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Mt.Vernon1143ILMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Mt.Vernon1143ILMember" xlink:type="arc" use="optional" order="114" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Niles1969ILMember" xlink:label="loc_hcp_Niles1969ILMember" xlink:title="Niles1969ILMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Niles1969ILMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Niles1969ILMember" xlink:type="arc" use="optional" order="115" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OakPark1005ILMember" xlink:label="loc_hcp_OakPark1005ILMember" xlink:title="OakPark1005ILMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_OakPark1005ILMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_OakPark1005ILMember" xlink:type="arc" use="optional" order="116" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OlympiaFields1961ILMember" xlink:label="loc_hcp_OlympiaFields1961ILMember" xlink:title="OlympiaFields1961ILMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_OlympiaFields1961ILMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_OlympiaFields1961ILMember" xlink:type="arc" use="optional" order="117" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OrlandPark1162ILMember" xlink:label="loc_hcp_OrlandPark1162ILMember" xlink:title="OrlandPark1162ILMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_OrlandPark1162ILMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_OrlandPark1162ILMember" xlink:type="arc" use="optional" order="118" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Peoria1092ILMember" xlink:label="loc_hcp_Peoria1092ILMember" xlink:title="Peoria1092ILMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Peoria1092ILMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Peoria1092ILMember" xlink:type="arc" use="optional" order="119" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ProspectHeights1588ILMember" xlink:label="loc_hcp_ProspectHeights1588ILMember" xlink:title="ProspectHeights1588ILMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_ProspectHeights1588ILMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_ProspectHeights1588ILMember" xlink:type="arc" use="optional" order="120" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_VernonHills1952ILMember" xlink:label="loc_hcp_VernonHills1952ILMember" xlink:title="VernonHills1952ILMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_VernonHills1952ILMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_VernonHills1952ILMember" xlink:type="arc" use="optional" order="121" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Wilmette1237ILMember" xlink:label="loc_hcp_Wilmette1237ILMember" xlink:title="Wilmette1237ILMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Wilmette1237ILMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Wilmette1237ILMember" xlink:type="arc" use="optional" order="122" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Evansville379INMember" xlink:label="loc_hcp_Evansville379INMember" xlink:title="Evansville379INMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Evansville379INMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Evansville379INMember" xlink:type="arc" use="optional" order="123" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Indianapolis1144INMember" xlink:label="loc_hcp_Indianapolis1144INMember" xlink:title="Indianapolis1144INMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Indianapolis1144INMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Indianapolis1144INMember" xlink:type="arc" use="optional" order="124" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Indianapolis1145INMember" xlink:label="loc_hcp_Indianapolis1145INMember" xlink:title="Indianapolis1145INMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Indianapolis1145INMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Indianapolis1145INMember" xlink:type="arc" use="optional" order="125" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Jasper457INMember" xlink:label="loc_hcp_Jasper457INMember" xlink:title="Jasper457INMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Jasper457INMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Jasper457INMember" xlink:type="arc" use="optional" order="126" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Kokomo2047INMember" xlink:label="loc_hcp_Kokomo2047INMember" xlink:title="Kokomo2047INMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Kokomo2047INMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Kokomo2047INMember" xlink:type="arc" use="optional" order="127" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_WestLafayette1146INMember" xlink:label="loc_hcp_WestLafayette1146INMember" xlink:title="WestLafayette1146INMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_WestLafayette1146INMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_WestLafayette1146INMember" xlink:type="arc" use="optional" order="128" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Edgewood1170KYMember" xlink:label="loc_hcp_Edgewood1170KYMember" xlink:title="Edgewood1170KYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Edgewood1170KYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Edgewood1170KYMember" xlink:type="arc" use="optional" order="129" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Lexington697KYMember" xlink:label="loc_hcp_Lexington697KYMember" xlink:title="Lexington697KYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Lexington697KYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Lexington697KYMember" xlink:type="arc" use="optional" order="130" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Louisville1105KYMember" xlink:label="loc_hcp_Louisville1105KYMember" xlink:title="Louisville1105KYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Louisville1105KYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Louisville1105KYMember" xlink:type="arc" use="optional" order="131" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Murray2115KYMember" xlink:label="loc_hcp_Murray2115KYMember" xlink:title="Murray2115KYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Murray2115KYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Murray2115KYMember" xlink:type="arc" use="optional" order="132" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Paducah2135KYMember" xlink:label="loc_hcp_Paducah2135KYMember" xlink:title="Paducah2135KYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Paducah2135KYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Paducah2135KYMember" xlink:type="arc" use="optional" order="133" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Danvers1013MAMember" xlink:label="loc_hcp_Danvers1013MAMember" xlink:title="Danvers1013MAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Danvers1013MAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Danvers1013MAMember" xlink:type="arc" use="optional" order="134" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Dartmouth1151MAMember" xlink:label="loc_hcp_Dartmouth1151MAMember" xlink:title="Dartmouth1151MAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Dartmouth1151MAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Dartmouth1151MAMember" xlink:type="arc" use="optional" order="135" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Dedham1012MAMember" xlink:label="loc_hcp_Dedham1012MAMember" xlink:title="Dedham1012MAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Dedham1012MAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Dedham1012MAMember" xlink:type="arc" use="optional" order="136" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Plymouth1158MAMember" xlink:label="loc_hcp_Plymouth1158MAMember" xlink:title="Plymouth1158MAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Plymouth1158MAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Plymouth1158MAMember" xlink:type="arc" use="optional" order="137" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Baltimore1153MDMember" xlink:label="loc_hcp_Baltimore1153MDMember" xlink:title="Baltimore1153MDMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Baltimore1153MDMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Baltimore1153MDMember" xlink:type="arc" use="optional" order="138" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Frederick1249MDMember" xlink:label="loc_hcp_Frederick1249MDMember" xlink:title="Frederick1249MDMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Frederick1249MDMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Frederick1249MDMember" xlink:type="arc" use="optional" order="139" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Pikesville1011MDMember" xlink:label="loc_hcp_Pikesville1011MDMember" xlink:title="Pikesville1011MDMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Pikesville1011MDMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Pikesville1011MDMember" xlink:type="arc" use="optional" order="140" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Westminster281MDMember" xlink:label="loc_hcp_Westminster281MDMember" xlink:title="Westminster281MDMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Westminster281MDMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Westminster281MDMember" xlink:type="arc" use="optional" order="141" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CapeElizabeth546MEMember" xlink:label="loc_hcp_CapeElizabeth546MEMember" xlink:title="CapeElizabeth546MEMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_CapeElizabeth546MEMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_CapeElizabeth546MEMember" xlink:type="arc" use="optional" order="142" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Saco545MEMember" xlink:label="loc_hcp_Saco545MEMember" xlink:title="Saco545MEMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Saco545MEMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Saco545MEMember" xlink:type="arc" use="optional" order="143" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_AuburnHills1258MIMember" xlink:label="loc_hcp_AuburnHills1258MIMember" xlink:title="AuburnHills1258MIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_AuburnHills1258MIMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_AuburnHills1258MIMember" xlink:type="arc" use="optional" order="144" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FarmingtonHills1248MIMember" xlink:label="loc_hcp_FarmingtonHills1248MIMember" xlink:title="FarmingtonHills1248MIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_FarmingtonHills1248MIMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_FarmingtonHills1248MIMember" xlink:type="arc" use="optional" order="145" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Holland696MIMember" xlink:label="loc_hcp_Holland696MIMember" xlink:title="Holland696MIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Holland696MIMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Holland696MIMember" xlink:type="arc" use="optional" order="146" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Portage1094MIMember" xlink:label="loc_hcp_Portage1094MIMember" xlink:title="Portage1094MIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Portage1094MIMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Portage1094MIMember" xlink:type="arc" use="optional" order="147" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SterlingHeights472MIMember" xlink:label="loc_hcp_SterlingHeights472MIMember" xlink:title="SterlingHeights472MIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SterlingHeights472MIMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SterlingHeights472MIMember" xlink:type="arc" use="optional" order="148" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SterlingHeights1259MIMember" xlink:label="loc_hcp_SterlingHeights1259MIMember" xlink:title="SterlingHeights1259MIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SterlingHeights1259MIMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SterlingHeights1259MIMember" xlink:type="arc" use="optional" order="149" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Champlin2143MNMember" xlink:label="loc_hcp_Champlin2143MNMember" xlink:title="Champlin2143MNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Champlin2143MNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Champlin2143MNMember" xlink:type="arc" use="optional" order="150" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DesPeres1235MOMember" xlink:label="loc_hcp_DesPeres1235MOMember" xlink:title="DesPeres1235MOMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_DesPeres1235MOMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_DesPeres1235MOMember" xlink:type="arc" use="optional" order="151" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RichmondHeights1236MOMember" xlink:label="loc_hcp_RichmondHeights1236MOMember" xlink:title="RichmondHeights1236MOMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RichmondHeights1236MOMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RichmondHeights1236MOMember" xlink:type="arc" use="optional" order="152" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_St.Louis853MOMember" xlink:label="loc_hcp_St.Louis853MOMember" xlink:title="St.Louis853MOMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_St.Louis853MOMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_St.Louis853MOMember" xlink:type="arc" use="optional" order="153" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_St.Peters2081MOMember" xlink:label="loc_hcp_St.Peters2081MOMember" xlink:title="St.Peters2081MOMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_St.Peters2081MOMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_St.Peters2081MOMember" xlink:type="arc" use="optional" order="154" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Oxford2074MSMember" xlink:label="loc_hcp_Oxford2074MSMember" xlink:title="Oxford2074MSMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Oxford2074MSMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Oxford2074MSMember" xlink:type="arc" use="optional" order="155" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_GreatFalls842MTMember" xlink:label="loc_hcp_GreatFalls842MTMember" xlink:title="GreatFalls842MTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_GreatFalls842MTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_GreatFalls842MTMember" xlink:type="arc" use="optional" order="156" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_GreatFalls2163MTMember" xlink:label="loc_hcp_GreatFalls2163MTMember" xlink:title="GreatFalls2163MTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_GreatFalls2163MTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_GreatFalls2163MTMember" xlink:type="arc" use="optional" order="157" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Charlotte878NCMember" xlink:label="loc_hcp_Charlotte878NCMember" xlink:title="Charlotte878NCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Charlotte878NCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Charlotte878NCMember" xlink:type="arc" use="optional" order="158" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Charlotte1584NCMember" xlink:label="loc_hcp_Charlotte1584NCMember" xlink:title="Charlotte1584NCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Charlotte1584NCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Charlotte1584NCMember" xlink:type="arc" use="optional" order="159" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Concord1119NCMember" xlink:label="loc_hcp_Concord1119NCMember" xlink:title="Concord1119NCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Concord1119NCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Concord1119NCMember" xlink:type="arc" use="optional" order="160" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Mooresville2126NCMember" xlink:label="loc_hcp_Mooresville2126NCMember" xlink:title="Mooresville2126NCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Mooresville2126NCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Mooresville2126NCMember" xlink:type="arc" use="optional" order="161" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Raleigh1254NCMember" xlink:label="loc_hcp_Raleigh1254NCMember" xlink:title="Raleigh1254NCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Raleigh1254NCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Raleigh1254NCMember" xlink:type="arc" use="optional" order="162" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Minot2127NDMember" xlink:label="loc_hcp_Minot2127NDMember" xlink:title="Minot2127NDMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Minot2127NDMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Minot2127NDMember" xlink:type="arc" use="optional" order="163" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Kearney2080NEMember" xlink:label="loc_hcp_Kearney2080NEMember" xlink:title="Kearney2080NEMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Kearney2080NEMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Kearney2080NEMember" xlink:type="arc" use="optional" order="164" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Lexington2169NEMember" xlink:label="loc_hcp_Lexington2169NEMember" xlink:title="Lexington2169NEMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Lexington2169NEMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Lexington2169NEMember" xlink:type="arc" use="optional" order="165" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_McCook2168NEMember" xlink:label="loc_hcp_McCook2168NEMember" xlink:title="McCook2168NEMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_McCook2168NEMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_McCook2168NEMember" xlink:type="arc" use="optional" order="166" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Seward2129NEMember" xlink:label="loc_hcp_Seward2129NEMember" xlink:title="Seward2129NEMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Seward2129NEMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Seward2129NEMember" xlink:type="arc" use="optional" order="167" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Wayne2119NEMember" xlink:label="loc_hcp_Wayne2119NEMember" xlink:title="Wayne2119NEMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Wayne2119NEMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Wayne2119NEMember" xlink:type="arc" use="optional" order="168" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CherryHill1599NJMember" xlink:label="loc_hcp_CherryHill1599NJMember" xlink:title="CherryHill1599NJMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_CherryHill1599NJMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_CherryHill1599NJMember" xlink:type="arc" use="optional" order="169" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Cresskill1239NJMember" xlink:label="loc_hcp_Cresskill1239NJMember" xlink:title="Cresskill1239NJMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Cresskill1239NJMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Cresskill1239NJMember" xlink:type="arc" use="optional" order="170" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hillsborough734NJMember" xlink:label="loc_hcp_Hillsborough734NJMember" xlink:title="Hillsborough734NJMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hillsborough734NJMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hillsborough734NJMember" xlink:type="arc" use="optional" order="171" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Madison1242NJMember" xlink:label="loc_hcp_Madison1242NJMember" xlink:title="Madison1242NJMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Madison1242NJMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Madison1242NJMember" xlink:type="arc" use="optional" order="172" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Manahawkin733NJMember" xlink:label="loc_hcp_Manahawkin733NJMember" xlink:title="Manahawkin733NJMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Manahawkin733NJMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Manahawkin733NJMember" xlink:type="arc" use="optional" order="173" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Paramus1014NJMember" xlink:label="loc_hcp_Paramus1014NJMember" xlink:title="Paramus1014NJMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Paramus1014NJMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Paramus1014NJMember" xlink:type="arc" use="optional" order="174" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaddleRiver1231NJMember" xlink:label="loc_hcp_SaddleRiver1231NJMember" xlink:title="SaddleRiver1231NJMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaddleRiver1231NJMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaddleRiver1231NJMember" xlink:type="arc" use="optional" order="175" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_VoorheesTownship245NJMember" xlink:label="loc_hcp_VoorheesTownship245NJMember" xlink:title="VoorheesTownship245NJMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_VoorheesTownship245NJMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_VoorheesTownship245NJMember" xlink:type="arc" use="optional" order="176" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Albuquerque213NMMember" xlink:label="loc_hcp_Albuquerque213NMMember" xlink:title="Albuquerque213NMMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Albuquerque213NMMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Albuquerque213NMMember" xlink:type="arc" use="optional" order="177" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Albuquerque2120NMMember" xlink:label="loc_hcp_Albuquerque2120NMMember" xlink:title="Albuquerque2120NMMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Albuquerque2120NMMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Albuquerque2120NMMember" xlink:type="arc" use="optional" order="178" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RioRancho2161NMMember" xlink:label="loc_hcp_RioRancho2161NMMember" xlink:title="RioRancho2161NMMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RioRancho2161NMMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RioRancho2161NMMember" xlink:type="arc" use="optional" order="179" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Roswell2121NMMember" xlink:label="loc_hcp_Roswell2121NMMember" xlink:title="Roswell2121NMMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Roswell2121NMMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Roswell2121NMMember" xlink:type="arc" use="optional" order="180" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Roswell2150NMMember" xlink:label="loc_hcp_Roswell2150NMMember" xlink:title="Roswell2150NMMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Roswell2150NMMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Roswell2150NMMember" xlink:type="arc" use="optional" order="181" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LasVegas796NVMember" xlink:label="loc_hcp_LasVegas796NVMember" xlink:title="LasVegas796NVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LasVegas796NVMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LasVegas796NVMember" xlink:type="arc" use="optional" order="182" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LasVegas2110NVMember" xlink:label="loc_hcp_LasVegas2110NVMember" xlink:title="LasVegas2110NVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LasVegas2110NVMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LasVegas2110NVMember" xlink:type="arc" use="optional" order="183" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Brooklyn1252NYMember" xlink:label="loc_hcp_Brooklyn1252NYMember" xlink:title="Brooklyn1252NYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Brooklyn1252NYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Brooklyn1252NYMember" xlink:type="arc" use="optional" order="184" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Brooklyn1256NYMember" xlink:label="loc_hcp_Brooklyn1256NYMember" xlink:title="Brooklyn1256NYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Brooklyn1256NYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Brooklyn1256NYMember" xlink:type="arc" use="optional" order="185" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CliftonPark2177NYMember" xlink:label="loc_hcp_CliftonPark2177NYMember" xlink:title="CliftonPark2177NYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_CliftonPark2177NYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_CliftonPark2177NYMember" xlink:type="arc" use="optional" order="186" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Greece2176NYMember" xlink:label="loc_hcp_Greece2176NYMember" xlink:title="Greece2176NYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Greece2176NYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Greece2176NYMember" xlink:type="arc" use="optional" order="187" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Greece2178NYMember" xlink:label="loc_hcp_Greece2178NYMember" xlink:title="Greece2178NYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Greece2178NYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Greece2178NYMember" xlink:type="arc" use="optional" order="188" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OrchardPark2174NYMember" xlink:label="loc_hcp_OrchardPark2174NYMember" xlink:title="OrchardPark2174NYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_OrchardPark2174NYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_OrchardPark2174NYMember" xlink:type="arc" use="optional" order="189" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OrchardPark2175NYMember" xlink:label="loc_hcp_OrchardPark2175NYMember" xlink:title="OrchardPark2175NYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_OrchardPark2175NYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_OrchardPark2175NYMember" xlink:type="arc" use="optional" order="190" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Cincinnati473OHMember" xlink:label="loc_hcp_Cincinnati473OHMember" xlink:title="Cincinnati473OHMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Cincinnati473OHMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Cincinnati473OHMember" xlink:type="arc" use="optional" order="191" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Columbus841OHMember" xlink:label="loc_hcp_Columbus841OHMember" xlink:title="Columbus841OHMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Columbus841OHMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Columbus841OHMember" xlink:type="arc" use="optional" order="192" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Fairborn857OHMember" xlink:label="loc_hcp_Fairborn857OHMember" xlink:title="Fairborn857OHMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Fairborn857OHMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Fairborn857OHMember" xlink:type="arc" use="optional" order="193" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Fairborn1147OHMember" xlink:label="loc_hcp_Fairborn1147OHMember" xlink:title="Fairborn1147OHMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Fairborn1147OHMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Fairborn1147OHMember" xlink:type="arc" use="optional" order="194" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Marietta1386OHMember" xlink:label="loc_hcp_Marietta1386OHMember" xlink:title="Marietta1386OHMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Marietta1386OHMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Marietta1386OHMember" xlink:type="arc" use="optional" order="195" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Poland1253OHMember" xlink:label="loc_hcp_Poland1253OHMember" xlink:title="Poland1253OHMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Poland1253OHMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Poland1253OHMember" xlink:type="arc" use="optional" order="196" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Willoughby1159OHMember" xlink:label="loc_hcp_Willoughby1159OHMember" xlink:title="Willoughby1159OHMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Willoughby1159OHMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Willoughby1159OHMember" xlink:type="arc" use="optional" order="197" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BrokenArrow2158OKMember" xlink:label="loc_hcp_BrokenArrow2158OKMember" xlink:title="BrokenArrow2158OKMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_BrokenArrow2158OKMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_BrokenArrow2158OKMember" xlink:type="arc" use="optional" order="198" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Muskogee2122OKMember" xlink:label="loc_hcp_Muskogee2122OKMember" xlink:title="Muskogee2122OKMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Muskogee2122OKMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Muskogee2122OKMember" xlink:type="arc" use="optional" order="199" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OklahomaCity1171OKMember" xlink:label="loc_hcp_OklahomaCity1171OKMember" xlink:title="OklahomaCity1171OKMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_OklahomaCity1171OKMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_OklahomaCity1171OKMember" xlink:type="arc" use="optional" order="200" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OklahomaCity2082OKMember" xlink:label="loc_hcp_OklahomaCity2082OKMember" xlink:title="OklahomaCity2082OKMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_OklahomaCity2082OKMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_OklahomaCity2082OKMember" xlink:type="arc" use="optional" order="201" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OklahomaCity2083OKMember" xlink:label="loc_hcp_OklahomaCity2083OKMember" xlink:title="OklahomaCity2083OKMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_OklahomaCity2083OKMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_OklahomaCity2083OKMember" xlink:type="arc" use="optional" order="202" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Tahlequah2070OKMember" xlink:label="loc_hcp_Tahlequah2070OKMember" xlink:title="Tahlequah2070OKMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Tahlequah2070OKMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Tahlequah2070OKMember" xlink:type="arc" use="optional" order="203" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Tulsa1160OKMember" xlink:label="loc_hcp_Tulsa1160OKMember" xlink:title="Tulsa1160OKMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Tulsa1160OKMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Tulsa1160OKMember" xlink:type="arc" use="optional" order="204" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Ashland2130ORMember" xlink:label="loc_hcp_Ashland2130ORMember" xlink:title="Ashland2130ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Ashland2130ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Ashland2130ORMember" xlink:type="arc" use="optional" order="205" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EaglePoint2103ORMember" xlink:label="loc_hcp_EaglePoint2103ORMember" xlink:title="EaglePoint2103ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_EaglePoint2103ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_EaglePoint2103ORMember" xlink:type="arc" use="optional" order="206" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EldoradoHeights2179ORMember" xlink:label="loc_hcp_EldoradoHeights2179ORMember" xlink:title="EldoradoHeights2179ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_EldoradoHeights2179ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_EldoradoHeights2179ORMember" xlink:type="arc" use="optional" order="207" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Eugene2098ORMember" xlink:label="loc_hcp_Eugene2098ORMember" xlink:title="Eugene2098ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Eugene2098ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Eugene2098ORMember" xlink:type="arc" use="optional" order="208" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Eugene2104ORMember" xlink:label="loc_hcp_Eugene2104ORMember" xlink:title="Eugene2104ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Eugene2104ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Eugene2104ORMember" xlink:type="arc" use="optional" order="209" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_GrantsPass2136ORMember" xlink:label="loc_hcp_GrantsPass2136ORMember" xlink:title="GrantsPass2136ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_GrantsPass2136ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_GrantsPass2136ORMember" xlink:type="arc" use="optional" order="210" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_GrantsPass2137ORMember" xlink:label="loc_hcp_GrantsPass2137ORMember" xlink:title="GrantsPass2137ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_GrantsPass2137ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_GrantsPass2137ORMember" xlink:type="arc" use="optional" order="211" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_GrantsPass2138ORMember" xlink:label="loc_hcp_GrantsPass2138ORMember" xlink:title="GrantsPass2138ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_GrantsPass2138ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_GrantsPass2138ORMember" xlink:type="arc" use="optional" order="212" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_GrantsPass2145ORMember" xlink:label="loc_hcp_GrantsPass2145ORMember" xlink:title="GrantsPass2145ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_GrantsPass2145ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_GrantsPass2145ORMember" xlink:type="arc" use="optional" order="213" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Gresham2139ORMember" xlink:label="loc_hcp_Gresham2139ORMember" xlink:title="Gresham2139ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Gresham2139ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Gresham2139ORMember" xlink:type="arc" use="optional" order="214" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HermistonTerrace2182ORMember" xlink:label="loc_hcp_HermistonTerrace2182ORMember" xlink:title="HermistonTerrace2182ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_HermistonTerrace2182ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_HermistonTerrace2182ORMember" xlink:type="arc" use="optional" order="215" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Lebanon2140ORMember" xlink:label="loc_hcp_Lebanon2140ORMember" xlink:title="Lebanon2140ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Lebanon2140ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Lebanon2140ORMember" xlink:type="arc" use="optional" order="216" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_McMinnville2152ORMember" xlink:label="loc_hcp_McMinnville2152ORMember" xlink:title="McMinnville2152ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_McMinnville2152ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_McMinnville2152ORMember" xlink:type="arc" use="optional" order="217" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_McMinnville2159ORMember" xlink:label="loc_hcp_McMinnville2159ORMember" xlink:title="McMinnville2159ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_McMinnville2159ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_McMinnville2159ORMember" xlink:type="arc" use="optional" order="218" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Monmouth2090ORMember" xlink:label="loc_hcp_Monmouth2090ORMember" xlink:title="Monmouth2090ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Monmouth2090ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Monmouth2090ORMember" xlink:type="arc" use="optional" order="219" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Monmouth2106ORMember" xlink:label="loc_hcp_Monmouth2106ORMember" xlink:title="Monmouth2106ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Monmouth2106ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Monmouth2106ORMember" xlink:type="arc" use="optional" order="220" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Newberg2089ORMember" xlink:label="loc_hcp_Newberg2089ORMember" xlink:title="Newberg2089ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Newberg2089ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Newberg2089ORMember" xlink:type="arc" use="optional" order="221" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Portland2133ORMember" xlink:label="loc_hcp_Portland2133ORMember" xlink:title="Portland2133ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Portland2133ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Portland2133ORMember" xlink:type="arc" use="optional" order="222" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Portland2151ORMember" xlink:label="loc_hcp_Portland2151ORMember" xlink:title="Portland2151ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Portland2151ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Portland2151ORMember" xlink:type="arc" use="optional" order="223" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Portland2171ORMember" xlink:label="loc_hcp_Portland2171ORMember" xlink:title="Portland2171ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Portland2171ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Portland2171ORMember" xlink:type="arc" use="optional" order="224" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Redmond2050ORMember" xlink:label="loc_hcp_Redmond2050ORMember" xlink:title="Redmond2050ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Redmond2050ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Redmond2050ORMember" xlink:type="arc" use="optional" order="225" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RiverRoad2131ORMember" xlink:label="loc_hcp_RiverRoad2131ORMember" xlink:title="RiverRoad2131ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RiverRoad2131ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RiverRoad2131ORMember" xlink:type="arc" use="optional" order="226" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Roseburg2084ORMember" xlink:label="loc_hcp_Roseburg2084ORMember" xlink:title="Roseburg2084ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Roseburg2084ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Roseburg2084ORMember" xlink:type="arc" use="optional" order="227" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Scappoose2134ORMember" xlink:label="loc_hcp_Scappoose2134ORMember" xlink:title="Scappoose2134ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Scappoose2134ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Scappoose2134ORMember" xlink:type="arc" use="optional" order="228" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Scappoose2153ORMember" xlink:label="loc_hcp_Scappoose2153ORMember" xlink:title="Scappoose2153ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Scappoose2153ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Scappoose2153ORMember" xlink:type="arc" use="optional" order="229" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Springfield2051ORMember" xlink:label="loc_hcp_Springfield2051ORMember" xlink:title="Springfield2051ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Springfield2051ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Springfield2051ORMember" xlink:type="arc" use="optional" order="230" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Springfield2057ORMember" xlink:label="loc_hcp_Springfield2057ORMember" xlink:title="Springfield2057ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Springfield2057ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Springfield2057ORMember" xlink:type="arc" use="optional" order="231" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Stayton2056ORMember" xlink:label="loc_hcp_Stayton2056ORMember" xlink:title="Stayton2056ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Stayton2056ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Stayton2056ORMember" xlink:type="arc" use="optional" order="232" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Stayton2058ORMember" xlink:label="loc_hcp_Stayton2058ORMember" xlink:title="Stayton2058ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Stayton2058ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Stayton2058ORMember" xlink:type="arc" use="optional" order="233" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Tualatin2088ORMember" xlink:label="loc_hcp_Tualatin2088ORMember" xlink:title="Tualatin2088ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Tualatin2088ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Tualatin2088ORMember" xlink:type="arc" use="optional" order="234" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_WindfieldVillage2180ORMember" xlink:label="loc_hcp_WindfieldVillage2180ORMember" xlink:title="WindfieldVillage2180ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_WindfieldVillage2180ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_WindfieldVillage2180ORMember" xlink:type="arc" use="optional" order="235" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Haverford1163PAMember" xlink:label="loc_hcp_Haverford1163PAMember" xlink:title="Haverford1163PAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Haverford1163PAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Haverford1163PAMember" xlink:type="arc" use="optional" order="236" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Selinsgrove2063PAMember" xlink:label="loc_hcp_Selinsgrove2063PAMember" xlink:title="Selinsgrove2063PAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Selinsgrove2063PAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Selinsgrove2063PAMember" xlink:type="arc" use="optional" order="237" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Cumberland1967RIMember" xlink:label="loc_hcp_Cumberland1967RIMember" xlink:title="Cumberland1967RIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Cumberland1967RIMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Cumberland1967RIMember" xlink:type="arc" use="optional" order="238" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EastProvidence1959RIMember" xlink:label="loc_hcp_EastProvidence1959RIMember" xlink:title="EastProvidence1959RIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_EastProvidence1959RIMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_EastProvidence1959RIMember" xlink:type="arc" use="optional" order="239" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Greenwich1960RIMember" xlink:label="loc_hcp_Greenwich1960RIMember" xlink:title="Greenwich1960RIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Greenwich1960RIMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Greenwich1960RIMember" xlink:type="arc" use="optional" order="240" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Smithfield1972RIMember" xlink:label="loc_hcp_Smithfield1972RIMember" xlink:title="Smithfield1972RIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Smithfield1972RIMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Smithfield1972RIMember" xlink:type="arc" use="optional" order="241" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthKingstown1973RIMember" xlink:label="loc_hcp_SouthKingstown1973RIMember" xlink:title="SouthKingstown1973RIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthKingstown1973RIMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthKingstown1973RIMember" xlink:type="arc" use="optional" order="242" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Tiverton1975RIMember" xlink:label="loc_hcp_Tiverton1975RIMember" xlink:title="Tiverton1975RIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Tiverton1975RIMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Tiverton1975RIMember" xlink:type="arc" use="optional" order="243" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Warwick1962RIMember" xlink:label="loc_hcp_Warwick1962RIMember" xlink:title="Warwick1962RIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Warwick1962RIMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Warwick1962RIMember" xlink:type="arc" use="optional" order="244" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Aiken1104SCMember" xlink:label="loc_hcp_Aiken1104SCMember" xlink:title="Aiken1104SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Aiken1104SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Aiken1104SCMember" xlink:type="arc" use="optional" order="245" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Charleston1100SCMember" xlink:label="loc_hcp_Charleston1100SCMember" xlink:title="Charleston1100SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Charleston1100SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Charleston1100SCMember" xlink:type="arc" use="optional" order="246" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Columbia1109SCMember" xlink:label="loc_hcp_Columbia1109SCMember" xlink:title="Columbia1109SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Columbia1109SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Columbia1109SCMember" xlink:type="arc" use="optional" order="247" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Florence2154SCMember" xlink:label="loc_hcp_Florence2154SCMember" xlink:title="Florence2154SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Florence2154SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Florence2154SCMember" xlink:type="arc" use="optional" order="248" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Georgetown306SCMember" xlink:label="loc_hcp_Georgetown306SCMember" xlink:title="Georgetown306SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Georgetown306SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Georgetown306SCMember" xlink:type="arc" use="optional" order="249" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Greenville879SCMember" xlink:label="loc_hcp_Greenville879SCMember" xlink:title="Greenville879SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Greenville879SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Greenville879SCMember" xlink:type="arc" use="optional" order="250" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Greenville1172SCMember" xlink:label="loc_hcp_Greenville1172SCMember" xlink:title="Greenville1172SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Greenville1172SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Greenville1172SCMember" xlink:type="arc" use="optional" order="251" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Greenville2059SCMember" xlink:label="loc_hcp_Greenville2059SCMember" xlink:title="Greenville2059SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Greenville2059SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Greenville2059SCMember" xlink:type="arc" use="optional" order="252" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HiltonHeadIsland2099SCMember" xlink:label="loc_hcp_HiltonHeadIsland2099SCMember" xlink:title="HiltonHeadIsland2099SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_HiltonHeadIsland2099SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_HiltonHeadIsland2099SCMember" xlink:type="arc" use="optional" order="253" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HiltonHeadIsland2111SCMember" xlink:label="loc_hcp_HiltonHeadIsland2111SCMember" xlink:title="HiltonHeadIsland2111SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_HiltonHeadIsland2111SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_HiltonHeadIsland2111SCMember" xlink:type="arc" use="optional" order="254" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_HiltonHeadIsland2112SCMember" xlink:label="loc_hcp_HiltonHeadIsland2112SCMember" xlink:title="HiltonHeadIsland2112SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_HiltonHeadIsland2112SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_HiltonHeadIsland2112SCMember" xlink:type="arc" use="optional" order="255" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Lancaster305SCMember" xlink:label="loc_hcp_Lancaster305SCMember" xlink:title="Lancaster305SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Lancaster305SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Lancaster305SCMember" xlink:type="arc" use="optional" order="256" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MyrtleBeach880SCMember" xlink:label="loc_hcp_MyrtleBeach880SCMember" xlink:title="MyrtleBeach880SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_MyrtleBeach880SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_MyrtleBeach880SCMember" xlink:type="arc" use="optional" order="257" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RockHill312SCMember" xlink:label="loc_hcp_RockHill312SCMember" xlink:title="RockHill312SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RockHill312SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RockHill312SCMember" xlink:type="arc" use="optional" order="258" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RockHill1113SCMember" xlink:label="loc_hcp_RockHill1113SCMember" xlink:title="RockHill1113SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RockHill1113SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RockHill1113SCMember" xlink:type="arc" use="optional" order="259" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RockHill2076SCMember" xlink:label="loc_hcp_RockHill2076SCMember" xlink:title="RockHill2076SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RockHill2076SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RockHill2076SCMember" xlink:type="arc" use="optional" order="260" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RockHill2093SCMember" xlink:label="loc_hcp_RockHill2093SCMember" xlink:title="RockHill2093SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RockHill2093SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RockHill2093SCMember" xlink:type="arc" use="optional" order="261" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Sumter313SCMember" xlink:label="loc_hcp_Sumter313SCMember" xlink:title="Sumter313SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Sumter313SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Sumter313SCMember" xlink:type="arc" use="optional" order="262" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_WestColumbia2067SCMember" xlink:label="loc_hcp_WestColumbia2067SCMember" xlink:title="WestColumbia2067SCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_WestColumbia2067SCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_WestColumbia2067SCMember" xlink:type="arc" use="optional" order="263" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Cordova2132TNMember" xlink:label="loc_hcp_Cordova2132TNMember" xlink:title="Cordova2132TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Cordova2132TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Cordova2132TNMember" xlink:type="arc" use="optional" order="264" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Franklin2060TNMember" xlink:label="loc_hcp_Franklin2060TNMember" xlink:title="Franklin2060TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Franklin2060TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Franklin2060TNMember" xlink:type="arc" use="optional" order="265" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hendersonville2100TNMember" xlink:label="loc_hcp_Hendersonville2100TNMember" xlink:title="Hendersonville2100TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hendersonville2100TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hendersonville2100TNMember" xlink:type="arc" use="optional" order="266" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Kingsport2073TNMember" xlink:label="loc_hcp_Kingsport2073TNMember" xlink:title="Kingsport2073TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Kingsport2073TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Kingsport2073TNMember" xlink:type="arc" use="optional" order="267" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Memphis2071TNMember" xlink:label="loc_hcp_Memphis2071TNMember" xlink:title="Memphis2071TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Memphis2071TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Memphis2071TNMember" xlink:type="arc" use="optional" order="268" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Nashville1003TNMember" xlink:label="loc_hcp_Nashville1003TNMember" xlink:title="Nashville1003TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Nashville1003TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Nashville1003TNMember" xlink:type="arc" use="optional" order="269" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Nashville2094TNMember" xlink:label="loc_hcp_Nashville2094TNMember" xlink:title="Nashville2094TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Nashville2094TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Nashville2094TNMember" xlink:type="arc" use="optional" order="270" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OakRidge860TNMember" xlink:label="loc_hcp_OakRidge860TNMember" xlink:title="OakRidge860TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_OakRidge860TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_OakRidge860TNMember" xlink:type="arc" use="optional" order="271" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Abilene843TXMember" xlink:label="loc_hcp_Abilene843TXMember" xlink:title="Abilene843TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Abilene843TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Abilene843TXMember" xlink:type="arc" use="optional" order="272" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Amarillo2107TXMember" xlink:label="loc_hcp_Amarillo2107TXMember" xlink:title="Amarillo2107TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Amarillo2107TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Amarillo2107TXMember" xlink:type="arc" use="optional" order="273" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Arlington1004TXMember" xlink:label="loc_hcp_Arlington1004TXMember" xlink:title="Arlington1004TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Arlington1004TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Arlington1004TXMember" xlink:type="arc" use="optional" order="274" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Arlington1116TXMember" xlink:label="loc_hcp_Arlington1116TXMember" xlink:title="Arlington1116TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Arlington1116TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Arlington1116TXMember" xlink:type="arc" use="optional" order="275" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Austin511TXMember" xlink:label="loc_hcp_Austin511TXMember" xlink:title="Austin511TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Austin511TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Austin511TXMember" xlink:type="arc" use="optional" order="276" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Austin1589TXMember" xlink:label="loc_hcp_Austin1589TXMember" xlink:title="Austin1589TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Austin1589TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Austin1589TXMember" xlink:type="arc" use="optional" order="277" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Beaumont202TXMember" xlink:label="loc_hcp_Beaumont202TXMember" xlink:title="Beaumont202TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Beaumont202TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Beaumont202TXMember" xlink:type="arc" use="optional" order="278" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Bedford2075TXMember" xlink:label="loc_hcp_Bedford2075TXMember" xlink:title="Bedford2075TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Bedford2075TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Bedford2075TXMember" xlink:type="arc" use="optional" order="279" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Burleson844TXMember" xlink:label="loc_hcp_Burleson844TXMember" xlink:title="Burleson844TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Burleson844TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Burleson844TXMember" xlink:type="arc" use="optional" order="280" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CedarHill848TXMember" xlink:label="loc_hcp_CedarHill848TXMember" xlink:title="CedarHill848TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_CedarHill848TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_CedarHill848TXMember" xlink:type="arc" use="optional" order="281" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CedarHill1325TXMember" xlink:label="loc_hcp_CedarHill1325TXMember" xlink:title="CedarHill1325TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_CedarHill1325TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_CedarHill1325TXMember" xlink:type="arc" use="optional" order="282" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Dallas2164TXMember" xlink:label="loc_hcp_Dallas2164TXMember" xlink:title="Dallas2164TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Dallas2164TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Dallas2164TXMember" xlink:type="arc" use="optional" order="283" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FortWorth513TXMember" xlink:label="loc_hcp_FortWorth513TXMember" xlink:title="FortWorth513TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_FortWorth513TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_FortWorth513TXMember" xlink:type="arc" use="optional" order="284" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Friendswood506TXMember" xlink:label="loc_hcp_Friendswood506TXMember" xlink:title="Friendswood506TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Friendswood506TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Friendswood506TXMember" xlink:type="arc" use="optional" order="285" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Houston217TXMember" xlink:label="loc_hcp_Houston217TXMember" xlink:title="Houston217TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Houston217TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Houston217TXMember" xlink:type="arc" use="optional" order="286" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Houston491TXMember" xlink:label="loc_hcp_Houston491TXMember" xlink:title="Houston491TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Houston491TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Houston491TXMember" xlink:type="arc" use="optional" order="287" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Houston1106TXMember" xlink:label="loc_hcp_Houston1106TXMember" xlink:title="Houston1106TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Houston1106TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Houston1106TXMember" xlink:type="arc" use="optional" order="288" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Houston1111TXMember" xlink:label="loc_hcp_Houston1111TXMember" xlink:title="Houston1111TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Houston1111TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Houston1111TXMember" xlink:type="arc" use="optional" order="289" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Houston1955TXMember" xlink:label="loc_hcp_Houston1955TXMember" xlink:title="Houston1955TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Houston1955TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Houston1955TXMember" xlink:type="arc" use="optional" order="290" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Houston1957TXMember" xlink:label="loc_hcp_Houston1957TXMember" xlink:title="Houston1957TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Houston1957TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Houston1957TXMember" xlink:type="arc" use="optional" order="291" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Houston1958TXMember" xlink:label="loc_hcp_Houston1958TXMember" xlink:title="Houston1958TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Houston1958TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Houston1958TXMember" xlink:type="arc" use="optional" order="292" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Houston2068TXMember" xlink:label="loc_hcp_Houston2068TXMember" xlink:title="Houston2068TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Houston2068TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Houston2068TXMember" xlink:type="arc" use="optional" order="293" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Irving820TXMember" xlink:label="loc_hcp_Irving820TXMember" xlink:title="Irving820TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Irving820TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Irving820TXMember" xlink:type="arc" use="optional" order="294" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Kerrville2149TXMember" xlink:label="loc_hcp_Kerrville2149TXMember" xlink:title="Kerrville2149TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Kerrville2149TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Kerrville2149TXMember" xlink:type="arc" use="optional" order="295" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Lubbock2124TXMember" xlink:label="loc_hcp_Lubbock2124TXMember" xlink:title="Lubbock2124TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Lubbock2124TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Lubbock2124TXMember" xlink:type="arc" use="optional" order="296" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NorthRichlandHills845TXMember" xlink:label="loc_hcp_NorthRichlandHills845TXMember" xlink:title="NorthRichlandHills845TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_NorthRichlandHills845TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_NorthRichlandHills845TXMember" xlink:type="arc" use="optional" order="297" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NorthRichlandHills846TXMember" xlink:label="loc_hcp_NorthRichlandHills846TXMember" xlink:title="NorthRichlandHills846TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_NorthRichlandHills846TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_NorthRichlandHills846TXMember" xlink:type="arc" use="optional" order="298" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NorthRichlandHills2113TXMember" xlink:label="loc_hcp_NorthRichlandHills2113TXMember" xlink:title="NorthRichlandHills2113TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_NorthRichlandHills2113TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_NorthRichlandHills2113TXMember" xlink:type="arc" use="optional" order="299" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Plano1102TXMember" xlink:label="loc_hcp_Plano1102TXMember" xlink:title="Plano1102TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Plano1102TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Plano1102TXMember" xlink:type="arc" use="optional" order="300" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Plano2064TXMember" xlink:label="loc_hcp_Plano2064TXMember" xlink:title="Plano2064TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Plano2064TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Plano2064TXMember" xlink:type="arc" use="optional" order="301" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Portland2162TXMember" xlink:label="loc_hcp_Portland2162TXMember" xlink:title="Portland2162TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Portland2162TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Portland2162TXMember" xlink:type="arc" use="optional" order="302" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanAntonio494TXMember" xlink:label="loc_hcp_SanAntonio494TXMember" xlink:title="SanAntonio494TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanAntonio494TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanAntonio494TXMember" xlink:type="arc" use="optional" order="303" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanAntonio1590TXMember" xlink:label="loc_hcp_SanAntonio1590TXMember" xlink:title="SanAntonio1590TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanAntonio1590TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanAntonio1590TXMember" xlink:type="arc" use="optional" order="304" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Sherman2116TXMember" xlink:label="loc_hcp_Sherman2116TXMember" xlink:title="Sherman2116TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Sherman2116TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Sherman2116TXMember" xlink:type="arc" use="optional" order="305" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SugarLand1954TXMember" xlink:label="loc_hcp_SugarLand1954TXMember" xlink:title="SugarLand1954TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SugarLand1954TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SugarLand1954TXMember" xlink:type="arc" use="optional" order="306" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_TheWoodlands1103TXMember" xlink:label="loc_hcp_TheWoodlands1103TXMember" xlink:title="TheWoodlands1103TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_TheWoodlands1103TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_TheWoodlands1103TXMember" xlink:type="arc" use="optional" order="307" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Victoria195TXMember" xlink:label="loc_hcp_Victoria195TXMember" xlink:title="Victoria195TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Victoria195TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Victoria195TXMember" xlink:type="arc" use="optional" order="308" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Waxahachie847TXMember" xlink:label="loc_hcp_Waxahachie847TXMember" xlink:title="Waxahachie847TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Waxahachie847TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Waxahachie847TXMember" xlink:type="arc" use="optional" order="309" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Webster1953TXMember" xlink:label="loc_hcp_Webster1953TXMember" xlink:title="Webster1953TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Webster1953TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Webster1953TXMember" xlink:type="arc" use="optional" order="310" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CedarCity2069UTMember" xlink:label="loc_hcp_CedarCity2069UTMember" xlink:title="CedarCity2069UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_CedarCity2069UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_CedarCity2069UTMember" xlink:type="arc" use="optional" order="311" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity1161UTMember" xlink:label="loc_hcp_SaltLakeCity1161UTMember" xlink:title="SaltLakeCity1161UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity1161UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity1161UTMember" xlink:type="arc" use="optional" order="312" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_St.George2101UTMember" xlink:label="loc_hcp_St.George2101UTMember" xlink:title="St.George2101UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_St.George2101UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_St.George2101UTMember" xlink:type="arc" use="optional" order="313" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Arlington1015VAMember" xlink:label="loc_hcp_Arlington1015VAMember" xlink:title="Arlington1015VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Arlington1015VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Arlington1015VAMember" xlink:type="arc" use="optional" order="314" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Arlington1244VAMember" xlink:label="loc_hcp_Arlington1244VAMember" xlink:title="Arlington1244VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Arlington1244VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Arlington1244VAMember" xlink:type="arc" use="optional" order="315" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Arlington1245VAMember" xlink:label="loc_hcp_Arlington1245VAMember" xlink:title="Arlington1245VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Arlington1245VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Arlington1245VAMember" xlink:type="arc" use="optional" order="316" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Chesapeake881VAMember" xlink:label="loc_hcp_Chesapeake881VAMember" xlink:title="Chesapeake881VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Chesapeake881VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Chesapeake881VAMember" xlink:type="arc" use="optional" order="317" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FallsChurch1247VAMember" xlink:label="loc_hcp_FallsChurch1247VAMember" xlink:title="FallsChurch1247VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_FallsChurch1247VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_FallsChurch1247VAMember" xlink:type="arc" use="optional" order="318" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FortBelvoir1164VAMember" xlink:label="loc_hcp_FortBelvoir1164VAMember" xlink:title="FortBelvoir1164VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_FortBelvoir1164VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_FortBelvoir1164VAMember" xlink:type="arc" use="optional" order="319" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Leesburg1250VAMember" xlink:label="loc_hcp_Leesburg1250VAMember" xlink:title="Leesburg1250VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Leesburg1250VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Leesburg1250VAMember" xlink:type="arc" use="optional" order="320" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Richmond1016VAMember" xlink:label="loc_hcp_Richmond1016VAMember" xlink:title="Richmond1016VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Richmond1016VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Richmond1016VAMember" xlink:type="arc" use="optional" order="321" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Sterling1246VAMember" xlink:label="loc_hcp_Sterling1246VAMember" xlink:title="Sterling1246VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Sterling1246VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Sterling1246VAMember" xlink:type="arc" use="optional" order="322" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Sterling2077VAMember" xlink:label="loc_hcp_Sterling2077VAMember" xlink:title="Sterling2077VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Sterling2077VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Sterling2077VAMember" xlink:type="arc" use="optional" order="323" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Woodbridge225VAMember" xlink:label="loc_hcp_Woodbridge225VAMember" xlink:title="Woodbridge225VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Woodbridge225VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Woodbridge225VAMember" xlink:type="arc" use="optional" order="324" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Bellevue1173WAMember" xlink:label="loc_hcp_Bellevue1173WAMember" xlink:title="Bellevue1173WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Bellevue1173WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Bellevue1173WAMember" xlink:type="arc" use="optional" order="325" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CollegePlace2095WAMember" xlink:label="loc_hcp_CollegePlace2095WAMember" xlink:title="CollegePlace2095WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_CollegePlace2095WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_CollegePlace2095WAMember" xlink:type="arc" use="optional" order="326" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Edmonds1240WAMember" xlink:label="loc_hcp_Edmonds1240WAMember" xlink:title="Edmonds1240WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Edmonds1240WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Edmonds1240WAMember" xlink:type="arc" use="optional" order="327" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Ellensburg2172WAMember" xlink:label="loc_hcp_Ellensburg2172WAMember" xlink:title="Ellensburg2172WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Ellensburg2172WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Ellensburg2172WAMember" xlink:type="arc" use="optional" order="328" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Kenmore2160WAMember" xlink:label="loc_hcp_Kenmore2160WAMember" xlink:title="Kenmore2160WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Kenmore2160WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Kenmore2160WAMember" xlink:type="arc" use="optional" order="329" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Kirkland797WAMember" xlink:label="loc_hcp_Kirkland797WAMember" xlink:title="Kirkland797WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Kirkland797WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Kirkland797WAMember" xlink:type="arc" use="optional" order="330" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Lynnwood1174WAMember" xlink:label="loc_hcp_Lynnwood1174WAMember" xlink:title="Lynnwood1174WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Lynnwood1174WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Lynnwood1174WAMember" xlink:type="arc" use="optional" order="331" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MercerIsland1251WAMember" xlink:label="loc_hcp_MercerIsland1251WAMember" xlink:title="MercerIsland1251WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_MercerIsland1251WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_MercerIsland1251WAMember" xlink:type="arc" use="optional" order="332" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MosesLake2141WAMember" xlink:label="loc_hcp_MosesLake2141WAMember" xlink:title="MosesLake2141WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_MosesLake2141WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_MosesLake2141WAMember" xlink:type="arc" use="optional" order="333" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Poulsbo2096WAMember" xlink:label="loc_hcp_Poulsbo2096WAMember" xlink:title="Poulsbo2096WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Poulsbo2096WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Poulsbo2096WAMember" xlink:type="arc" use="optional" order="334" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Richland2102WAMember" xlink:label="loc_hcp_Richland2102WAMember" xlink:title="Richland2102WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Richland2102WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Richland2102WAMember" xlink:type="arc" use="optional" order="335" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Shoreline794WAMember" xlink:label="loc_hcp_Shoreline794WAMember" xlink:title="Shoreline794WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Shoreline794WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Shoreline794WAMember" xlink:type="arc" use="optional" order="336" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Shoreline795WAMember" xlink:label="loc_hcp_Shoreline795WAMember" xlink:title="Shoreline795WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Shoreline795WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Shoreline795WAMember" xlink:type="arc" use="optional" order="337" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Snohomish1175WAMember" xlink:label="loc_hcp_Snohomish1175WAMember" xlink:title="Snohomish1175WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Snohomish1175WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Snohomish1175WAMember" xlink:type="arc" use="optional" order="338" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Spokane2097WAMember" xlink:label="loc_hcp_Spokane2097WAMember" xlink:title="Spokane2097WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Spokane2097WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Spokane2097WAMember" xlink:type="arc" use="optional" order="339" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Vancouver2061WAMember" xlink:label="loc_hcp_Vancouver2061WAMember" xlink:title="Vancouver2061WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Vancouver2061WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Vancouver2061WAMember" xlink:type="arc" use="optional" order="340" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Vancouver2062WAMember" xlink:label="loc_hcp_Vancouver2062WAMember" xlink:title="Vancouver2062WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Vancouver2062WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Vancouver2062WAMember" xlink:type="arc" use="optional" order="341" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Yakima2052WAMember" xlink:label="loc_hcp_Yakima2052WAMember" xlink:title="Yakima2052WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Yakima2052WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Yakima2052WAMember" xlink:type="arc" use="optional" order="342" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Yakima2078WAMember" xlink:label="loc_hcp_Yakima2078WAMember" xlink:title="Yakima2078WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Yakima2078WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Yakima2078WAMember" xlink:type="arc" use="optional" order="343" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Yakima2114WAMember" xlink:label="loc_hcp_Yakima2114WAMember" xlink:title="Yakima2114WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Yakima2114WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Yakima2114WAMember" xlink:type="arc" use="optional" order="344" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Appleton2072WIMember" xlink:label="loc_hcp_Appleton2072WIMember" xlink:title="Appleton2072WIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Appleton2072WIMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Appleton2072WIMember" xlink:type="arc" use="optional" order="345" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Madison2170WIMember" xlink:label="loc_hcp_Madison2170WIMember" xlink:title="Madison2170WIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Madison2170WIMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Madison2170WIMember" xlink:type="arc" use="optional" order="346" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Oakridge2173WIMember" xlink:label="loc_hcp_Oakridge2173WIMember" xlink:title="Oakridge2173WIMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Oakridge2173WIMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Oakridge2173WIMember" xlink:type="arc" use="optional" order="347" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Bridgeport2117WVMember" xlink:label="loc_hcp_Bridgeport2117WVMember" xlink:title="Bridgeport2117WVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Bridgeport2117WVMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Bridgeport2117WVMember" xlink:type="arc" use="optional" order="348" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Bridgeport2125WVMember" xlink:label="loc_hcp_Bridgeport2125WVMember" xlink:title="Bridgeport2125WVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Bridgeport2125WVMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Bridgeport2125WVMember" xlink:type="arc" use="optional" order="349" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Cody2142WYMember" xlink:label="loc_hcp_Cody2142WYMember" xlink:title="Cody2142WYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Cody2142WYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Cody2142WYMember" xlink:type="arc" use="optional" order="350" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Sheridan2148WYMember" xlink:label="loc_hcp_Sheridan2148WYMember" xlink:title="Sheridan2148WYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Sheridan2148WYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Sheridan2148WYMember" xlink:type="arc" use="optional" order="351" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FortCollins2COMember" xlink:label="loc_hcp_FortCollins2COMember" xlink:title="FortCollins2COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_FortCollins2COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_FortCollins2COMember" xlink:type="arc" use="optional" order="352" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Morrison18COMember" xlink:label="loc_hcp_Morrison18COMember" xlink:title="Morrison18COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Morrison18COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Morrison18COMember" xlink:type="arc" use="optional" order="353" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Statesboro280GAMember" xlink:label="loc_hcp_Statesboro280GAMember" xlink:title="Statesboro280GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Statesboro280GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Statesboro280GAMember" xlink:type="arc" use="optional" order="354" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Rexburg297IDMember" xlink:label="loc_hcp_Rexburg297IDMember" xlink:title="Rexburg297IDMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Rexburg297IDMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Rexburg297IDMember" xlink:type="arc" use="optional" order="355" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Anderson378INMember" xlink:label="loc_hcp_Anderson378INMember" xlink:title="Anderson378INMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Anderson378INMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Anderson378INMember" xlink:type="arc" use="optional" order="356" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Anderson2189INMember" xlink:label="loc_hcp_Anderson2189INMember" xlink:title="Anderson2189INMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Anderson2189INMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Anderson2189INMember" xlink:type="arc" use="optional" order="357" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Angola384INMember" xlink:label="loc_hcp_Angola384INMember" xlink:title="Angola384INMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Angola384INMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Angola384INMember" xlink:type="arc" use="optional" order="358" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FortWayne385INMember" xlink:label="loc_hcp_FortWayne385INMember" xlink:title="FortWayne385INMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_FortWayne385INMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_FortWayne385INMember" xlink:type="arc" use="optional" order="359" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FortWayne386INMember" xlink:label="loc_hcp_FortWayne386INMember" xlink:title="FortWayne386INMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_FortWayne386INMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_FortWayne386INMember" xlink:type="arc" use="optional" order="360" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Huntington387INMember" xlink:label="loc_hcp_Huntington387INMember" xlink:title="Huntington387INMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Huntington387INMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Huntington387INMember" xlink:type="arc" use="optional" order="361" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Kokomo373INMember" xlink:label="loc_hcp_Kokomo373INMember" xlink:title="Kokomo373INMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Kokomo373INMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Kokomo373INMember" xlink:type="arc" use="optional" order="362" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NewAlbany454INMember" xlink:label="loc_hcp_NewAlbany454INMember" xlink:title="NewAlbany454INMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_NewAlbany454INMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_NewAlbany454INMember" xlink:type="arc" use="optional" order="363" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_TellCity484INMember" xlink:label="loc_hcp_TellCity484INMember" xlink:title="TellCity484INMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_TellCity484INMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_TellCity484INMember" xlink:type="arc" use="optional" order="364" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Cynthiana688KYMember" xlink:label="loc_hcp_Cynthiana688KYMember" xlink:title="Cynthiana688KYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Cynthiana688KYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Cynthiana688KYMember" xlink:type="arc" use="optional" order="365" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Franklin298LAMember" xlink:label="loc_hcp_Franklin298LAMember" xlink:title="Franklin298LAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Franklin298LAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Franklin298LAMember" xlink:type="arc" use="optional" order="366" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MorganCity299LAMember" xlink:label="loc_hcp_MorganCity299LAMember" xlink:title="MorganCity299LAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_MorganCity299LAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_MorganCity299LAMember" xlink:type="arc" use="optional" order="367" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LasVegas388NVMember" xlink:label="loc_hcp_LasVegas388NVMember" xlink:title="LasVegas388NVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LasVegas388NVMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LasVegas388NVMember" xlink:type="arc" use="optional" order="368" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LasVegas389NVMember" xlink:label="loc_hcp_LasVegas389NVMember" xlink:title="LasVegas389NVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LasVegas389NVMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LasVegas389NVMember" xlink:type="arc" use="optional" order="369" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Fairborn390OHMember" xlink:label="loc_hcp_Fairborn390OHMember" xlink:title="Fairborn390OHMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Fairborn390OHMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Fairborn390OHMember" xlink:type="arc" use="optional" order="370" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Georgetown391OHMember" xlink:label="loc_hcp_Georgetown391OHMember" xlink:title="Georgetown391OHMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Georgetown391OHMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Georgetown391OHMember" xlink:type="arc" use="optional" order="371" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_PortClinton392OHMember" xlink:label="loc_hcp_PortClinton392OHMember" xlink:title="PortClinton392OHMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_PortClinton392OHMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_PortClinton392OHMember" xlink:type="arc" use="optional" order="372" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Springfield393OHMember" xlink:label="loc_hcp_Springfield393OHMember" xlink:title="Springfield393OHMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Springfield393OHMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Springfield393OHMember" xlink:type="arc" use="optional" order="373" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Toledo394OHMember" xlink:label="loc_hcp_Toledo394OHMember" xlink:title="Toledo394OHMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Toledo394OHMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Toledo394OHMember" xlink:type="arc" use="optional" order="374" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Versailles395OHMember" xlink:label="loc_hcp_Versailles395OHMember" xlink:title="Versailles395OHMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Versailles395OHMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Versailles395OHMember" xlink:type="arc" use="optional" order="375" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FortWorth285TXMember" xlink:label="loc_hcp_FortWorth285TXMember" xlink:title="FortWorth285TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_FortWorth285TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_FortWorth285TXMember" xlink:type="arc" use="optional" order="376" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Ogden296UTMember" xlink:label="loc_hcp_Ogden296UTMember" xlink:title="Ogden296UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Ogden296UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Ogden296UTMember" xlink:type="arc" use="optional" order="377" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Fishersville681VAMember" xlink:label="loc_hcp_Fishersville681VAMember" xlink:title="Fishersville681VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Fishersville681VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Fishersville681VAMember" xlink:type="arc" use="optional" order="378" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Floyd682VAMember" xlink:label="loc_hcp_Floyd682VAMember" xlink:title="Floyd682VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Floyd682VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Floyd682VAMember" xlink:type="arc" use="optional" order="379" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Independence689VAMember" xlink:label="loc_hcp_Independence689VAMember" xlink:title="Independence689VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Independence689VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Independence689VAMember" xlink:type="arc" use="optional" order="380" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NewportNews683VAMember" xlink:label="loc_hcp_NewportNews683VAMember" xlink:title="NewportNews683VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_NewportNews683VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_NewportNews683VAMember" xlink:type="arc" use="optional" order="381" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Roanoke684VAMember" xlink:label="loc_hcp_Roanoke684VAMember" xlink:title="Roanoke684VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Roanoke684VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Roanoke684VAMember" xlink:type="arc" use="optional" order="382" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Staunton685VAMember" xlink:label="loc_hcp_Staunton685VAMember" xlink:title="Staunton685VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Staunton685VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Staunton685VAMember" xlink:type="arc" use="optional" order="383" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Williamsburg686VAMember" xlink:label="loc_hcp_Williamsburg686VAMember" xlink:title="Williamsburg686VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Williamsburg686VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Williamsburg686VAMember" xlink:type="arc" use="optional" order="384" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Windsor690VAMember" xlink:label="loc_hcp_Windsor690VAMember" xlink:title="Windsor690VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Windsor690VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Windsor690VAMember" xlink:type="arc" use="optional" order="385" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Woodstock687VAMember" xlink:label="loc_hcp_Woodstock687VAMember" xlink:title="Woodstock687VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Woodstock687VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Woodstock687VAMember" xlink:type="arc" use="optional" order="386" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Brisbane1482CAMember" xlink:label="loc_hcp_Brisbane1482CAMember" xlink:title="Brisbane1482CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Brisbane1482CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Brisbane1482CAMember" xlink:type="arc" use="optional" order="387" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Carlsbad1481CAMember" xlink:label="loc_hcp_Carlsbad1481CAMember" xlink:title="Carlsbad1481CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Carlsbad1481CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Carlsbad1481CAMember" xlink:type="arc" use="optional" order="388" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Carlsbad1522CAMember" xlink:label="loc_hcp_Carlsbad1522CAMember" xlink:title="Carlsbad1522CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Carlsbad1522CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Carlsbad1522CAMember" xlink:type="arc" use="optional" order="389" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hayward1401CAMember" xlink:label="loc_hcp_Hayward1401CAMember" xlink:title="Hayward1401CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hayward1401CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hayward1401CAMember" xlink:type="arc" use="optional" order="390" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hayward1402CAMember" xlink:label="loc_hcp_Hayward1402CAMember" xlink:title="Hayward1402CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hayward1402CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hayward1402CAMember" xlink:type="arc" use="optional" order="391" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hayward1403CAMember" xlink:label="loc_hcp_Hayward1403CAMember" xlink:title="Hayward1403CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hayward1403CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hayward1403CAMember" xlink:type="arc" use="optional" order="392" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hayward1404CAMember" xlink:label="loc_hcp_Hayward1404CAMember" xlink:title="Hayward1404CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hayward1404CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hayward1404CAMember" xlink:type="arc" use="optional" order="393" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hayward1405CAMember" xlink:label="loc_hcp_Hayward1405CAMember" xlink:title="Hayward1405CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hayward1405CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hayward1405CAMember" xlink:type="arc" use="optional" order="394" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hayward1549CAMember" xlink:label="loc_hcp_Hayward1549CAMember" xlink:title="Hayward1549CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hayward1549CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hayward1549CAMember" xlink:type="arc" use="optional" order="395" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hayward1550CAMember" xlink:label="loc_hcp_Hayward1550CAMember" xlink:title="Hayward1550CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hayward1550CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hayward1550CAMember" xlink:type="arc" use="optional" order="396" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hayward1551CAMember" xlink:label="loc_hcp_Hayward1551CAMember" xlink:title="Hayward1551CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hayward1551CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hayward1551CAMember" xlink:type="arc" use="optional" order="397" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hayward1552CAMember" xlink:label="loc_hcp_Hayward1552CAMember" xlink:title="Hayward1552CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hayward1552CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hayward1552CAMember" xlink:type="arc" use="optional" order="398" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hayward1553CAMember" xlink:label="loc_hcp_Hayward1553CAMember" xlink:title="Hayward1553CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hayward1553CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hayward1553CAMember" xlink:type="arc" use="optional" order="399" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hayward1554CAMember" xlink:label="loc_hcp_Hayward1554CAMember" xlink:title="Hayward1554CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hayward1554CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hayward1554CAMember" xlink:type="arc" use="optional" order="400" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hayward1555CAMember" xlink:label="loc_hcp_Hayward1555CAMember" xlink:title="Hayward1555CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hayward1555CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hayward1555CAMember" xlink:type="arc" use="optional" order="401" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hayward1556CAMember" xlink:label="loc_hcp_Hayward1556CAMember" xlink:title="Hayward1556CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hayward1556CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hayward1556CAMember" xlink:type="arc" use="optional" order="402" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LaJolla1424CAMember" xlink:label="loc_hcp_LaJolla1424CAMember" xlink:title="LaJolla1424CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LaJolla1424CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LaJolla1424CAMember" xlink:type="arc" use="optional" order="403" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LaJolla1425CAMember" xlink:label="loc_hcp_LaJolla1425CAMember" xlink:title="LaJolla1425CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LaJolla1425CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LaJolla1425CAMember" xlink:type="arc" use="optional" order="404" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LaJolla1426CAMember" xlink:label="loc_hcp_LaJolla1426CAMember" xlink:title="LaJolla1426CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LaJolla1426CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LaJolla1426CAMember" xlink:type="arc" use="optional" order="405" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LaJolla1427CAMember" xlink:label="loc_hcp_LaJolla1427CAMember" xlink:title="LaJolla1427CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LaJolla1427CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LaJolla1427CAMember" xlink:type="arc" use="optional" order="406" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LaJolla1947CAMember" xlink:label="loc_hcp_LaJolla1947CAMember" xlink:title="LaJolla1947CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LaJolla1947CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LaJolla1947CAMember" xlink:type="arc" use="optional" order="407" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LaJolla1949CAMember" xlink:label="loc_hcp_LaJolla1949CAMember" xlink:title="LaJolla1949CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LaJolla1949CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LaJolla1949CAMember" xlink:type="arc" use="optional" order="408" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MountainView1488CAMember" xlink:label="loc_hcp_MountainView1488CAMember" xlink:title="MountainView1488CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_MountainView1488CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_MountainView1488CAMember" xlink:type="arc" use="optional" order="409" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MountainView1489CAMember" xlink:label="loc_hcp_MountainView1489CAMember" xlink:title="MountainView1489CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_MountainView1489CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_MountainView1489CAMember" xlink:type="arc" use="optional" order="410" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MountainView1490CAMember" xlink:label="loc_hcp_MountainView1490CAMember" xlink:title="MountainView1490CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_MountainView1490CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_MountainView1490CAMember" xlink:type="arc" use="optional" order="411" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MountainView1491CAMember" xlink:label="loc_hcp_MountainView1491CAMember" xlink:title="MountainView1491CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_MountainView1491CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_MountainView1491CAMember" xlink:type="arc" use="optional" order="412" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MountainView1492CAMember" xlink:label="loc_hcp_MountainView1492CAMember" xlink:title="MountainView1492CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_MountainView1492CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_MountainView1492CAMember" xlink:type="arc" use="optional" order="413" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MountainView1493CAMember" xlink:label="loc_hcp_MountainView1493CAMember" xlink:title="MountainView1493CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_MountainView1493CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_MountainView1493CAMember" xlink:type="arc" use="optional" order="414" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MountainView1494CAMember" xlink:label="loc_hcp_MountainView1494CAMember" xlink:title="MountainView1494CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_MountainView1494CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_MountainView1494CAMember" xlink:type="arc" use="optional" order="415" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MountainView1495CAMember" xlink:label="loc_hcp_MountainView1495CAMember" xlink:title="MountainView1495CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_MountainView1495CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_MountainView1495CAMember" xlink:type="arc" use="optional" order="416" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MountainView1496CAMember" xlink:label="loc_hcp_MountainView1496CAMember" xlink:title="MountainView1496CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_MountainView1496CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_MountainView1496CAMember" xlink:type="arc" use="optional" order="417" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MountainView1497CAMember" xlink:label="loc_hcp_MountainView1497CAMember" xlink:title="MountainView1497CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_MountainView1497CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_MountainView1497CAMember" xlink:type="arc" use="optional" order="418" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MountainView1498CAMember" xlink:label="loc_hcp_MountainView1498CAMember" xlink:title="MountainView1498CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_MountainView1498CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_MountainView1498CAMember" xlink:type="arc" use="optional" order="419" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MountainView2017CAMember" xlink:label="loc_hcp_MountainView2017CAMember" xlink:title="MountainView2017CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_MountainView2017CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_MountainView2017CAMember" xlink:type="arc" use="optional" order="420" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Poway1470CAMember" xlink:label="loc_hcp_Poway1470CAMember" xlink:title="Poway1470CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Poway1470CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Poway1470CAMember" xlink:type="arc" use="optional" order="421" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Poway1471CAMember" xlink:label="loc_hcp_Poway1471CAMember" xlink:title="Poway1471CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Poway1471CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Poway1471CAMember" xlink:type="arc" use="optional" order="422" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Poway1472CAMember" xlink:label="loc_hcp_Poway1472CAMember" xlink:title="Poway1472CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Poway1472CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Poway1472CAMember" xlink:type="arc" use="optional" order="423" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Poway1473CAMember" xlink:label="loc_hcp_Poway1473CAMember" xlink:title="Poway1473CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Poway1473CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Poway1473CAMember" xlink:type="arc" use="optional" order="424" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Poway1477CAMember" xlink:label="loc_hcp_Poway1477CAMember" xlink:title="Poway1477CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Poway1477CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Poway1477CAMember" xlink:type="arc" use="optional" order="425" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Poway1478CAMember" xlink:label="loc_hcp_Poway1478CAMember" xlink:title="Poway1478CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Poway1478CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Poway1478CAMember" xlink:type="arc" use="optional" order="426" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedwoodCity1499CAMember" xlink:label="loc_hcp_RedwoodCity1499CAMember" xlink:title="RedwoodCity1499CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RedwoodCity1499CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RedwoodCity1499CAMember" xlink:type="arc" use="optional" order="427" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedwoodCity1500CAMember" xlink:label="loc_hcp_RedwoodCity1500CAMember" xlink:title="RedwoodCity1500CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RedwoodCity1500CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RedwoodCity1500CAMember" xlink:type="arc" use="optional" order="428" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedwoodCity1501CAMember" xlink:label="loc_hcp_RedwoodCity1501CAMember" xlink:title="RedwoodCity1501CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RedwoodCity1501CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RedwoodCity1501CAMember" xlink:type="arc" use="optional" order="429" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedwoodCity1502CAMember" xlink:label="loc_hcp_RedwoodCity1502CAMember" xlink:title="RedwoodCity1502CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RedwoodCity1502CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RedwoodCity1502CAMember" xlink:type="arc" use="optional" order="430" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedwoodCity1503CAMember" xlink:label="loc_hcp_RedwoodCity1503CAMember" xlink:title="RedwoodCity1503CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RedwoodCity1503CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RedwoodCity1503CAMember" xlink:type="arc" use="optional" order="431" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedwoodCity1504CAMember" xlink:label="loc_hcp_RedwoodCity1504CAMember" xlink:title="RedwoodCity1504CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RedwoodCity1504CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RedwoodCity1504CAMember" xlink:type="arc" use="optional" order="432" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedwoodCity1505CAMember" xlink:label="loc_hcp_RedwoodCity1505CAMember" xlink:title="RedwoodCity1505CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RedwoodCity1505CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RedwoodCity1505CAMember" xlink:type="arc" use="optional" order="433" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedwoodCity1506CAMember" xlink:label="loc_hcp_RedwoodCity1506CAMember" xlink:title="RedwoodCity1506CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RedwoodCity1506CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RedwoodCity1506CAMember" xlink:type="arc" use="optional" order="434" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedwoodCity1507CAMember" xlink:label="loc_hcp_RedwoodCity1507CAMember" xlink:title="RedwoodCity1507CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RedwoodCity1507CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RedwoodCity1507CAMember" xlink:type="arc" use="optional" order="435" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedwoodCity1508CAMember" xlink:label="loc_hcp_RedwoodCity1508CAMember" xlink:title="RedwoodCity1508CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RedwoodCity1508CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RedwoodCity1508CAMember" xlink:type="arc" use="optional" order="436" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedwoodCity1509CAMember" xlink:label="loc_hcp_RedwoodCity1509CAMember" xlink:title="RedwoodCity1509CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RedwoodCity1509CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RedwoodCity1509CAMember" xlink:type="arc" use="optional" order="437" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedwoodCity1510CAMember" xlink:label="loc_hcp_RedwoodCity1510CAMember" xlink:title="RedwoodCity1510CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RedwoodCity1510CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RedwoodCity1510CAMember" xlink:type="arc" use="optional" order="438" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedwoodCity1511CAMember" xlink:label="loc_hcp_RedwoodCity1511CAMember" xlink:title="RedwoodCity1511CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RedwoodCity1511CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RedwoodCity1511CAMember" xlink:type="arc" use="optional" order="439" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedwoodCity1512CAMember" xlink:label="loc_hcp_RedwoodCity1512CAMember" xlink:title="RedwoodCity1512CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RedwoodCity1512CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RedwoodCity1512CAMember" xlink:type="arc" use="optional" order="440" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_RedwoodCity1513CAMember" xlink:label="loc_hcp_RedwoodCity1513CAMember" xlink:title="RedwoodCity1513CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_RedwoodCity1513CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_RedwoodCity1513CAMember" xlink:type="arc" use="optional" order="441" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego679CAMember" xlink:label="loc_hcp_SanDiego679CAMember" xlink:title="SanDiego679CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego679CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego679CAMember" xlink:type="arc" use="optional" order="442" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego837CAMember" xlink:label="loc_hcp_SanDiego837CAMember" xlink:title="SanDiego837CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego837CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego837CAMember" xlink:type="arc" use="optional" order="443" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego838CAMember" xlink:label="loc_hcp_SanDiego838CAMember" xlink:title="SanDiego838CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego838CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego838CAMember" xlink:type="arc" use="optional" order="444" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego839CAMember" xlink:label="loc_hcp_SanDiego839CAMember" xlink:title="SanDiego839CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego839CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego839CAMember" xlink:type="arc" use="optional" order="445" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego840CAMember" xlink:label="loc_hcp_SanDiego840CAMember" xlink:title="SanDiego840CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego840CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego840CAMember" xlink:type="arc" use="optional" order="446" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego1418CAMember" xlink:label="loc_hcp_SanDiego1418CAMember" xlink:title="SanDiego1418CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego1418CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego1418CAMember" xlink:type="arc" use="optional" order="447" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego1420CAMember" xlink:label="loc_hcp_SanDiego1420CAMember" xlink:title="SanDiego1420CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego1420CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego1420CAMember" xlink:type="arc" use="optional" order="448" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego1421CAMember" xlink:label="loc_hcp_SanDiego1421CAMember" xlink:title="SanDiego1421CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego1421CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego1421CAMember" xlink:type="arc" use="optional" order="449" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego1422CAMember" xlink:label="loc_hcp_SanDiego1422CAMember" xlink:title="SanDiego1422CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego1422CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego1422CAMember" xlink:type="arc" use="optional" order="450" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego1423CAMember" xlink:label="loc_hcp_SanDiego1423CAMember" xlink:title="SanDiego1423CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego1423CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego1423CAMember" xlink:type="arc" use="optional" order="451" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego1514CAMember" xlink:label="loc_hcp_SanDiego1514CAMember" xlink:title="SanDiego1514CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego1514CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego1514CAMember" xlink:type="arc" use="optional" order="452" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego1558CAMember" xlink:label="loc_hcp_SanDiego1558CAMember" xlink:title="SanDiego1558CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego1558CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego1558CAMember" xlink:type="arc" use="optional" order="453" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego1948CAMember" xlink:label="loc_hcp_SanDiego1948CAMember" xlink:title="SanDiego1948CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego1948CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego1948CAMember" xlink:type="arc" use="optional" order="454" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego1950CAMember" xlink:label="loc_hcp_SanDiego1950CAMember" xlink:title="SanDiego1950CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego1950CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego1950CAMember" xlink:type="arc" use="optional" order="455" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego2197CAMember" xlink:label="loc_hcp_SanDiego2197CAMember" xlink:title="SanDiego2197CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego2197CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego2197CAMember" xlink:type="arc" use="optional" order="456" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1407CAMember" xlink:label="loc_hcp_SouthSanFrancisco1407CAMember" xlink:title="SouthSanFrancisco1407CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1407CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1407CAMember" xlink:type="arc" use="optional" order="457" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1408CAMember" xlink:label="loc_hcp_SouthSanFrancisco1408CAMember" xlink:title="SouthSanFrancisco1408CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1408CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1408CAMember" xlink:type="arc" use="optional" order="458" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1409CAMember" xlink:label="loc_hcp_SouthSanFrancisco1409CAMember" xlink:title="SouthSanFrancisco1409CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1409CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1409CAMember" xlink:type="arc" use="optional" order="459" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1410CAMember" xlink:label="loc_hcp_SouthSanFrancisco1410CAMember" xlink:title="SouthSanFrancisco1410CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1410CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1410CAMember" xlink:type="arc" use="optional" order="460" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1411CAMember" xlink:label="loc_hcp_SouthSanFrancisco1411CAMember" xlink:title="SouthSanFrancisco1411CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1411CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1411CAMember" xlink:type="arc" use="optional" order="461" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1412CAMember" xlink:label="loc_hcp_SouthSanFrancisco1412CAMember" xlink:title="SouthSanFrancisco1412CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1412CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1412CAMember" xlink:type="arc" use="optional" order="462" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1413CAMember" xlink:label="loc_hcp_SouthSanFrancisco1413CAMember" xlink:title="SouthSanFrancisco1413CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1413CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1413CAMember" xlink:type="arc" use="optional" order="463" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1414CAMember" xlink:label="loc_hcp_SouthSanFrancisco1414CAMember" xlink:title="SouthSanFrancisco1414CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1414CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1414CAMember" xlink:type="arc" use="optional" order="464" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1430CAMember" xlink:label="loc_hcp_SouthSanFrancisco1430CAMember" xlink:title="SouthSanFrancisco1430CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1430CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1430CAMember" xlink:type="arc" use="optional" order="465" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1431CAMember" xlink:label="loc_hcp_SouthSanFrancisco1431CAMember" xlink:title="SouthSanFrancisco1431CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1431CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1431CAMember" xlink:type="arc" use="optional" order="466" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1435CAMember" xlink:label="loc_hcp_SouthSanFrancisco1435CAMember" xlink:title="SouthSanFrancisco1435CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1435CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1435CAMember" xlink:type="arc" use="optional" order="467" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1436CAMember" xlink:label="loc_hcp_SouthSanFrancisco1436CAMember" xlink:title="SouthSanFrancisco1436CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1436CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1436CAMember" xlink:type="arc" use="optional" order="468" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1437CAMember" xlink:label="loc_hcp_SouthSanFrancisco1437CAMember" xlink:title="SouthSanFrancisco1437CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1437CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1437CAMember" xlink:type="arc" use="optional" order="469" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1439CAMember" xlink:label="loc_hcp_SouthSanFrancisco1439CAMember" xlink:title="SouthSanFrancisco1439CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1439CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1439CAMember" xlink:type="arc" use="optional" order="470" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1440CAMember" xlink:label="loc_hcp_SouthSanFrancisco1440CAMember" xlink:title="SouthSanFrancisco1440CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1440CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1440CAMember" xlink:type="arc" use="optional" order="471" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1441CAMember" xlink:label="loc_hcp_SouthSanFrancisco1441CAMember" xlink:title="SouthSanFrancisco1441CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1441CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1441CAMember" xlink:type="arc" use="optional" order="472" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1442CAMember" xlink:label="loc_hcp_SouthSanFrancisco1442CAMember" xlink:title="SouthSanFrancisco1442CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1442CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1442CAMember" xlink:type="arc" use="optional" order="473" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1443CAMember" xlink:label="loc_hcp_SouthSanFrancisco1443CAMember" xlink:title="SouthSanFrancisco1443CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1443CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1443CAMember" xlink:type="arc" use="optional" order="474" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1444CAMember" xlink:label="loc_hcp_SouthSanFrancisco1444CAMember" xlink:title="SouthSanFrancisco1444CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1444CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1444CAMember" xlink:type="arc" use="optional" order="475" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1445CAMember" xlink:label="loc_hcp_SouthSanFrancisco1445CAMember" xlink:title="SouthSanFrancisco1445CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1445CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1445CAMember" xlink:type="arc" use="optional" order="476" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1448CAMember" xlink:label="loc_hcp_SouthSanFrancisco1448CAMember" xlink:title="SouthSanFrancisco1448CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1448CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1448CAMember" xlink:type="arc" use="optional" order="477" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1449CAMember" xlink:label="loc_hcp_SouthSanFrancisco1449CAMember" xlink:title="SouthSanFrancisco1449CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1449CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1449CAMember" xlink:type="arc" use="optional" order="478" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1450CAMember" xlink:label="loc_hcp_SouthSanFrancisco1450CAMember" xlink:title="SouthSanFrancisco1450CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1450CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1450CAMember" xlink:type="arc" use="optional" order="479" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1451CAMember" xlink:label="loc_hcp_SouthSanFrancisco1451CAMember" xlink:title="SouthSanFrancisco1451CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1451CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1451CAMember" xlink:type="arc" use="optional" order="480" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1452CAMember" xlink:label="loc_hcp_SouthSanFrancisco1452CAMember" xlink:title="SouthSanFrancisco1452CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1452CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1452CAMember" xlink:type="arc" use="optional" order="481" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1454CAMember" xlink:label="loc_hcp_SouthSanFrancisco1454CAMember" xlink:title="SouthSanFrancisco1454CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1454CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1454CAMember" xlink:type="arc" use="optional" order="482" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1455CAMember" xlink:label="loc_hcp_SouthSanFrancisco1455CAMember" xlink:title="SouthSanFrancisco1455CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1455CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1455CAMember" xlink:type="arc" use="optional" order="483" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1456CAMember" xlink:label="loc_hcp_SouthSanFrancisco1456CAMember" xlink:title="SouthSanFrancisco1456CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1456CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1456CAMember" xlink:type="arc" use="optional" order="484" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1458CAMember" xlink:label="loc_hcp_SouthSanFrancisco1458CAMember" xlink:title="SouthSanFrancisco1458CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1458CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1458CAMember" xlink:type="arc" use="optional" order="485" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1459CAMember" xlink:label="loc_hcp_SouthSanFrancisco1459CAMember" xlink:title="SouthSanFrancisco1459CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1459CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1459CAMember" xlink:type="arc" use="optional" order="486" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1460CAMember" xlink:label="loc_hcp_SouthSanFrancisco1460CAMember" xlink:title="SouthSanFrancisco1460CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1460CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1460CAMember" xlink:type="arc" use="optional" order="487" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1461CAMember" xlink:label="loc_hcp_SouthSanFrancisco1461CAMember" xlink:title="SouthSanFrancisco1461CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1461CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1461CAMember" xlink:type="arc" use="optional" order="488" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1462CAMember" xlink:label="loc_hcp_SouthSanFrancisco1462CAMember" xlink:title="SouthSanFrancisco1462CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1462CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1462CAMember" xlink:type="arc" use="optional" order="489" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1463CAMember" xlink:label="loc_hcp_SouthSanFrancisco1463CAMember" xlink:title="SouthSanFrancisco1463CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1463CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1463CAMember" xlink:type="arc" use="optional" order="490" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1464CAMember" xlink:label="loc_hcp_SouthSanFrancisco1464CAMember" xlink:title="SouthSanFrancisco1464CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1464CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1464CAMember" xlink:type="arc" use="optional" order="491" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1468CAMember" xlink:label="loc_hcp_SouthSanFrancisco1468CAMember" xlink:title="SouthSanFrancisco1468CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1468CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1468CAMember" xlink:type="arc" use="optional" order="492" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1480CAMember" xlink:label="loc_hcp_SouthSanFrancisco1480CAMember" xlink:title="SouthSanFrancisco1480CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1480CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1480CAMember" xlink:type="arc" use="optional" order="493" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1559CAMember" xlink:label="loc_hcp_SouthSanFrancisco1559CAMember" xlink:title="SouthSanFrancisco1559CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1559CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1559CAMember" xlink:type="arc" use="optional" order="494" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1560CAMember" xlink:label="loc_hcp_SouthSanFrancisco1560CAMember" xlink:title="SouthSanFrancisco1560CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1560CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1560CAMember" xlink:type="arc" use="optional" order="495" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SouthSanFrancisco1982CAMember" xlink:label="loc_hcp_SouthSanFrancisco1982CAMember" xlink:title="SouthSanFrancisco1982CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SouthSanFrancisco1982CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SouthSanFrancisco1982CAMember" xlink:type="arc" use="optional" order="496" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Cambridge1604MAMember" xlink:label="loc_hcp_Cambridge1604MAMember" xlink:title="Cambridge1604MAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Cambridge1604MAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Cambridge1604MAMember" xlink:type="arc" use="optional" order="497" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Durham2011NCMember" xlink:label="loc_hcp_Durham2011NCMember" xlink:title="Durham2011NCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Durham2011NCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Durham2011NCMember" xlink:type="arc" use="optional" order="498" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Durham2029NCMember" xlink:label="loc_hcp_Durham2029NCMember" xlink:title="Durham2029NCMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Durham2029NCMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Durham2029NCMember" xlink:type="arc" use="optional" order="499" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity461UTMember" xlink:label="loc_hcp_SaltLakeCity461UTMember" xlink:title="SaltLakeCity461UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity461UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity461UTMember" xlink:type="arc" use="optional" order="500" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity462UTMember" xlink:label="loc_hcp_SaltLakeCity462UTMember" xlink:title="SaltLakeCity462UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity462UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity462UTMember" xlink:type="arc" use="optional" order="501" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity463UTMember" xlink:label="loc_hcp_SaltLakeCity463UTMember" xlink:title="SaltLakeCity463UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity463UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity463UTMember" xlink:type="arc" use="optional" order="502" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity464UTMember" xlink:label="loc_hcp_SaltLakeCity464UTMember" xlink:title="SaltLakeCity464UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity464UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity464UTMember" xlink:type="arc" use="optional" order="503" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity465UTMember" xlink:label="loc_hcp_SaltLakeCity465UTMember" xlink:title="SaltLakeCity465UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity465UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity465UTMember" xlink:type="arc" use="optional" order="504" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity466UTMember" xlink:label="loc_hcp_SaltLakeCity466UTMember" xlink:title="SaltLakeCity466UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity466UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity466UTMember" xlink:type="arc" use="optional" order="505" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity507UTMember" xlink:label="loc_hcp_SaltLakeCity507UTMember" xlink:title="SaltLakeCity507UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity507UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity507UTMember" xlink:type="arc" use="optional" order="506" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity537UTMember" xlink:label="loc_hcp_SaltLakeCity537UTMember" xlink:title="SaltLakeCity537UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity537UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity537UTMember" xlink:type="arc" use="optional" order="507" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity799UTMember" xlink:label="loc_hcp_SaltLakeCity799UTMember" xlink:title="SaltLakeCity799UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity799UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity799UTMember" xlink:type="arc" use="optional" order="508" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity1593UTMember" xlink:label="loc_hcp_SaltLakeCity1593UTMember" xlink:title="SaltLakeCity1593UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity1593UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity1593UTMember" xlink:type="arc" use="optional" order="509" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Anchorage638AKMember" xlink:label="loc_hcp_Anchorage638AKMember" xlink:title="Anchorage638AKMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Anchorage638AKMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Anchorage638AKMember" xlink:type="arc" use="optional" order="510" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Chandler520AZMember" xlink:label="loc_hcp_Chandler520AZMember" xlink:title="Chandler520AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Chandler520AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Chandler520AZMember" xlink:type="arc" use="optional" order="511" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Mesa2040AZMember" xlink:label="loc_hcp_Mesa2040AZMember" xlink:title="Mesa2040AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Mesa2040AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Mesa2040AZMember" xlink:type="arc" use="optional" order="512" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OroValley468AZMember" xlink:label="loc_hcp_OroValley468AZMember" xlink:title="OroValley468AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_OroValley468AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_OroValley468AZMember" xlink:type="arc" use="optional" order="513" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Phoenix356AZMember" xlink:label="loc_hcp_Phoenix356AZMember" xlink:title="Phoenix356AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Phoenix356AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Phoenix356AZMember" xlink:type="arc" use="optional" order="514" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Phoenix470AZMember" xlink:label="loc_hcp_Phoenix470AZMember" xlink:title="Phoenix470AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Phoenix470AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Phoenix470AZMember" xlink:type="arc" use="optional" order="515" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Scottsdale1066AZMember" xlink:label="loc_hcp_Scottsdale1066AZMember" xlink:title="Scottsdale1066AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Scottsdale1066AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Scottsdale1066AZMember" xlink:type="arc" use="optional" order="516" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Scottsdale2021AZMember" xlink:label="loc_hcp_Scottsdale2021AZMember" xlink:title="Scottsdale2021AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Scottsdale2021AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Scottsdale2021AZMember" xlink:type="arc" use="optional" order="517" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Scottsdale2022AZMember" xlink:label="loc_hcp_Scottsdale2022AZMember" xlink:title="Scottsdale2022AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Scottsdale2022AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Scottsdale2022AZMember" xlink:type="arc" use="optional" order="518" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Scottsdale2023AZMember" xlink:label="loc_hcp_Scottsdale2023AZMember" xlink:title="Scottsdale2023AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Scottsdale2023AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Scottsdale2023AZMember" xlink:type="arc" use="optional" order="519" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Scottsdale2024AZMember" xlink:label="loc_hcp_Scottsdale2024AZMember" xlink:title="Scottsdale2024AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Scottsdale2024AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Scottsdale2024AZMember" xlink:type="arc" use="optional" order="520" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Scottsdale2025AZMember" xlink:label="loc_hcp_Scottsdale2025AZMember" xlink:title="Scottsdale2025AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Scottsdale2025AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Scottsdale2025AZMember" xlink:type="arc" use="optional" order="521" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Scottsdale2026AZMember" xlink:label="loc_hcp_Scottsdale2026AZMember" xlink:title="Scottsdale2026AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Scottsdale2026AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Scottsdale2026AZMember" xlink:type="arc" use="optional" order="522" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Scottsdale2027AZMember" xlink:label="loc_hcp_Scottsdale2027AZMember" xlink:title="Scottsdale2027AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Scottsdale2027AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Scottsdale2027AZMember" xlink:type="arc" use="optional" order="523" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Scottsdale2028AZMember" xlink:label="loc_hcp_Scottsdale2028AZMember" xlink:title="Scottsdale2028AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Scottsdale2028AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Scottsdale2028AZMember" xlink:type="arc" use="optional" order="524" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Tucson453AZMember" xlink:label="loc_hcp_Tucson453AZMember" xlink:title="Tucson453AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Tucson453AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Tucson453AZMember" xlink:type="arc" use="optional" order="525" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Tucson556AZMember" xlink:label="loc_hcp_Tucson556AZMember" xlink:title="Tucson556AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Tucson556AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Tucson556AZMember" xlink:type="arc" use="optional" order="526" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Brentwood1041CAMember" xlink:label="loc_hcp_Brentwood1041CAMember" xlink:title="Brentwood1041CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Brentwood1041CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Brentwood1041CAMember" xlink:type="arc" use="optional" order="527" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Encino1200CAMember" xlink:label="loc_hcp_Encino1200CAMember" xlink:title="Encino1200CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Encino1200CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Encino1200CAMember" xlink:type="arc" use="optional" order="528" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Murietta436CAMember" xlink:label="loc_hcp_Murietta436CAMember" xlink:title="Murietta436CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Murietta436CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Murietta436CAMember" xlink:type="arc" use="optional" order="529" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Poway239CAMember" xlink:label="loc_hcp_Poway239CAMember" xlink:title="Poway239CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Poway239CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Poway239CAMember" xlink:type="arc" use="optional" order="530" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Sacramento318CAMember" xlink:label="loc_hcp_Sacramento318CAMember" xlink:title="Sacramento318CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Sacramento318CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Sacramento318CAMember" xlink:type="arc" use="optional" order="531" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego234CAMember" xlink:label="loc_hcp_SanDiego234CAMember" xlink:title="SanDiego234CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego234CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego234CAMember" xlink:type="arc" use="optional" order="532" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego235CAMember" xlink:label="loc_hcp_SanDiego235CAMember" xlink:title="SanDiego235CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego235CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego235CAMember" xlink:type="arc" use="optional" order="533" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego236CAMember" xlink:label="loc_hcp_SanDiego236CAMember" xlink:title="SanDiego236CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego236CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego236CAMember" xlink:type="arc" use="optional" order="534" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanDiego421CAMember" xlink:label="loc_hcp_SanDiego421CAMember" xlink:title="SanDiego421CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanDiego421CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanDiego421CAMember" xlink:type="arc" use="optional" order="535" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanJose564CAMember" xlink:label="loc_hcp_SanJose564CAMember" xlink:title="SanJose564CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanJose564CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanJose564CAMember" xlink:type="arc" use="optional" order="536" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanJose565CAMember" xlink:label="loc_hcp_SanJose565CAMember" xlink:title="SanJose565CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanJose565CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanJose565CAMember" xlink:type="arc" use="optional" order="537" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanJose659CAMember" xlink:label="loc_hcp_SanJose659CAMember" xlink:title="SanJose659CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanJose659CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanJose659CAMember" xlink:type="arc" use="optional" order="538" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ShermanOaks1209CAMember" xlink:label="loc_hcp_ShermanOaks1209CAMember" xlink:title="ShermanOaks1209CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_ShermanOaks1209CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_ShermanOaks1209CAMember" xlink:type="arc" use="optional" order="539" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Valencia439CAMember" xlink:label="loc_hcp_Valencia439CAMember" xlink:title="Valencia439CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Valencia439CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Valencia439CAMember" xlink:type="arc" use="optional" order="540" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Valencia1211CAMember" xlink:label="loc_hcp_Valencia1211CAMember" xlink:title="Valencia1211CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Valencia1211CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Valencia1211CAMember" xlink:type="arc" use="optional" order="541" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_WestHills440CAMember" xlink:label="loc_hcp_WestHills440CAMember" xlink:title="WestHills440CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_WestHills440CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_WestHills440CAMember" xlink:type="arc" use="optional" order="542" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Aurora728COMember" xlink:label="loc_hcp_Aurora728COMember" xlink:title="Aurora728COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Aurora728COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Aurora728COMember" xlink:type="arc" use="optional" order="543" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Aurora1196COMember" xlink:label="loc_hcp_Aurora1196COMember" xlink:title="Aurora1196COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Aurora1196COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Aurora1196COMember" xlink:type="arc" use="optional" order="544" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Aurora1197COMember" xlink:label="loc_hcp_Aurora1197COMember" xlink:title="Aurora1197COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Aurora1197COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Aurora1197COMember" xlink:type="arc" use="optional" order="545" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ColoradoSprings882COMember" xlink:label="loc_hcp_ColoradoSprings882COMember" xlink:title="ColoradoSprings882COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_ColoradoSprings882COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_ColoradoSprings882COMember" xlink:type="arc" use="optional" order="546" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Conifer814COMember" xlink:label="loc_hcp_Conifer814COMember" xlink:title="Conifer814COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Conifer814COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Conifer814COMember" xlink:type="arc" use="optional" order="547" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Denver1199COMember" xlink:label="loc_hcp_Denver1199COMember" xlink:title="Denver1199COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Denver1199COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Denver1199COMember" xlink:type="arc" use="optional" order="548" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Englewood808COMember" xlink:label="loc_hcp_Englewood808COMember" xlink:title="Englewood808COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Englewood808COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Englewood808COMember" xlink:type="arc" use="optional" order="549" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Englewood809COMember" xlink:label="loc_hcp_Englewood809COMember" xlink:title="Englewood809COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Englewood809COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Englewood809COMember" xlink:type="arc" use="optional" order="550" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Englewood810COMember" xlink:label="loc_hcp_Englewood810COMember" xlink:title="Englewood810COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Englewood810COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Englewood810COMember" xlink:type="arc" use="optional" order="551" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Englewood811COMember" xlink:label="loc_hcp_Englewood811COMember" xlink:title="Englewood811COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Englewood811COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Englewood811COMember" xlink:type="arc" use="optional" order="552" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Littleton812COMember" xlink:label="loc_hcp_Littleton812COMember" xlink:title="Littleton812COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Littleton812COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Littleton812COMember" xlink:type="arc" use="optional" order="553" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Littleton813COMember" xlink:label="loc_hcp_Littleton813COMember" xlink:title="Littleton813COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Littleton813COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Littleton813COMember" xlink:type="arc" use="optional" order="554" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LoneTree570COMember" xlink:label="loc_hcp_LoneTree570COMember" xlink:title="LoneTree570COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LoneTree570COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LoneTree570COMember" xlink:type="arc" use="optional" order="555" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LoneTree666COMember" xlink:label="loc_hcp_LoneTree666COMember" xlink:title="LoneTree666COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LoneTree666COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LoneTree666COMember" xlink:type="arc" use="optional" order="556" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Parker1076COMember" xlink:label="loc_hcp_Parker1076COMember" xlink:title="Parker1076COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Parker1076COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Parker1076COMember" xlink:type="arc" use="optional" order="557" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Thornton510COMember" xlink:label="loc_hcp_Thornton510COMember" xlink:title="Thornton510COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Thornton510COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Thornton510COMember" xlink:type="arc" use="optional" order="558" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Atlantis433FLMember" xlink:label="loc_hcp_Atlantis433FLMember" xlink:title="Atlantis433FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Atlantis433FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Atlantis433FLMember" xlink:type="arc" use="optional" order="559" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Atlantis434FLMember" xlink:label="loc_hcp_Atlantis434FLMember" xlink:title="Atlantis434FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Atlantis434FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Atlantis434FLMember" xlink:type="arc" use="optional" order="560" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Atlantis435FLMember" xlink:label="loc_hcp_Atlantis435FLMember" xlink:title="Atlantis435FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Atlantis435FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Atlantis435FLMember" xlink:type="arc" use="optional" order="561" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Atlantis602FLMember" xlink:label="loc_hcp_Atlantis602FLMember" xlink:title="Atlantis602FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Atlantis602FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Atlantis602FLMember" xlink:type="arc" use="optional" order="562" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Englewood604FLMember" xlink:label="loc_hcp_Englewood604FLMember" xlink:title="Englewood604FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Englewood604FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Englewood604FLMember" xlink:type="arc" use="optional" order="563" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Kissimmee609FLMember" xlink:label="loc_hcp_Kissimmee609FLMember" xlink:title="Kissimmee609FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Kissimmee609FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Kissimmee609FLMember" xlink:type="arc" use="optional" order="564" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Kissimmee610FLMember" xlink:label="loc_hcp_Kissimmee610FLMember" xlink:title="Kissimmee610FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Kissimmee610FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Kissimmee610FLMember" xlink:type="arc" use="optional" order="565" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Kissimmee671FLMember" xlink:label="loc_hcp_Kissimmee671FLMember" xlink:title="Kissimmee671FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Kissimmee671FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Kissimmee671FLMember" xlink:type="arc" use="optional" order="566" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LakeWorth603FLMember" xlink:label="loc_hcp_LakeWorth603FLMember" xlink:title="LakeWorth603FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LakeWorth603FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LakeWorth603FLMember" xlink:type="arc" use="optional" order="567" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Margate612FLMember" xlink:label="loc_hcp_Margate612FLMember" xlink:title="Margate612FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Margate612FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Margate612FLMember" xlink:type="arc" use="optional" order="568" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Miami613FLMember" xlink:label="loc_hcp_Miami613FLMember" xlink:title="Miami613FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Miami613FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Miami613FLMember" xlink:type="arc" use="optional" order="569" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Milton1067FLMember" xlink:label="loc_hcp_Milton1067FLMember" xlink:title="Milton1067FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Milton1067FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Milton1067FLMember" xlink:type="arc" use="optional" order="570" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Orlando563FLMember" xlink:label="loc_hcp_Orlando563FLMember" xlink:title="Orlando563FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Orlando563FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Orlando563FLMember" xlink:type="arc" use="optional" order="571" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Pace833FLMember" xlink:label="loc_hcp_Pace833FLMember" xlink:title="Pace833FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Pace833FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Pace833FLMember" xlink:type="arc" use="optional" order="572" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Pensacola834FLMember" xlink:label="loc_hcp_Pensacola834FLMember" xlink:title="Pensacola834FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Pensacola834FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Pensacola834FLMember" xlink:type="arc" use="optional" order="573" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Plantation614FLMember" xlink:label="loc_hcp_Plantation614FLMember" xlink:title="Plantation614FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Plantation614FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Plantation614FLMember" xlink:type="arc" use="optional" order="574" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Plantation673FLMember" xlink:label="loc_hcp_Plantation673FLMember" xlink:title="Plantation673FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Plantation673FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Plantation673FLMember" xlink:type="arc" use="optional" order="575" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_St.Petersburg701FLMember" xlink:label="loc_hcp_St.Petersburg701FLMember" xlink:title="St.Petersburg701FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_St.Petersburg701FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_St.Petersburg701FLMember" xlink:type="arc" use="optional" order="576" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Tampa1210FLMember" xlink:label="loc_hcp_Tampa1210FLMember" xlink:title="Tampa1210FLMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Tampa1210FLMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Tampa1210FLMember" xlink:type="arc" use="optional" order="577" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_McCaysville1058GAMember" xlink:label="loc_hcp_McCaysville1058GAMember" xlink:title="McCaysville1058GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_McCaysville1058GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_McCaysville1058GAMember" xlink:type="arc" use="optional" order="578" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Marion1065ILMember" xlink:label="loc_hcp_Marion1065ILMember" xlink:title="Marion1065ILMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Marion1065ILMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Marion1065ILMember" xlink:type="arc" use="optional" order="579" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Newburgh1057INMember" xlink:label="loc_hcp_Newburgh1057INMember" xlink:title="Newburgh1057INMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Newburgh1057INMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Newburgh1057INMember" xlink:type="arc" use="optional" order="580" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_KansasCity2039KSMember" xlink:label="loc_hcp_KansasCity2039KSMember" xlink:title="KansasCity2039KSMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_KansasCity2039KSMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_KansasCity2039KSMember" xlink:type="arc" use="optional" order="581" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OverlandPark2043KSMember" xlink:label="loc_hcp_OverlandPark2043KSMember" xlink:title="OverlandPark2043KSMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_OverlandPark2043KSMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_OverlandPark2043KSMember" xlink:type="arc" use="optional" order="582" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Wichita483KSMember" xlink:label="loc_hcp_Wichita483KSMember" xlink:title="Wichita483KSMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Wichita483KSMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Wichita483KSMember" xlink:type="arc" use="optional" order="583" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Lexington1064KYMember" xlink:label="loc_hcp_Lexington1064KYMember" xlink:title="Lexington1064KYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Lexington1064KYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Lexington1064KYMember" xlink:type="arc" use="optional" order="584" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Louisville735KYMember" xlink:label="loc_hcp_Louisville735KYMember" xlink:title="Louisville735KYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Louisville735KYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Louisville735KYMember" xlink:type="arc" use="optional" order="585" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Louisville737KYMember" xlink:label="loc_hcp_Louisville737KYMember" xlink:title="Louisville737KYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Louisville737KYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Louisville737KYMember" xlink:type="arc" use="optional" order="586" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Louisville738KYMember" xlink:label="loc_hcp_Louisville738KYMember" xlink:title="Louisville738KYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Louisville738KYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Louisville738KYMember" xlink:type="arc" use="optional" order="587" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Louisville739KYMember" xlink:label="loc_hcp_Louisville739KYMember" xlink:title="Louisville739KYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Louisville739KYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Louisville739KYMember" xlink:type="arc" use="optional" order="588" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Louisville740KYMember" xlink:label="loc_hcp_Louisville740KYMember" xlink:title="Louisville740KYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Louisville740KYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Louisville740KYMember" xlink:type="arc" use="optional" order="589" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Louisville1944KYMember" xlink:label="loc_hcp_Louisville1944KYMember" xlink:title="Louisville1944KYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Louisville1944KYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Louisville1944KYMember" xlink:type="arc" use="optional" order="590" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Louisville1945KYMember" xlink:label="loc_hcp_Louisville1945KYMember" xlink:title="Louisville1945KYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Louisville1945KYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Louisville1945KYMember" xlink:type="arc" use="optional" order="591" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Louisville1946KYMember" xlink:label="loc_hcp_Louisville1946KYMember" xlink:title="Louisville1946KYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Louisville1946KYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Louisville1946KYMember" xlink:type="arc" use="optional" order="592" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Haverhill1324MAMember" xlink:label="loc_hcp_Haverhill1324MAMember" xlink:title="Haverhill1324MAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Haverhill1324MAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Haverhill1324MAMember" xlink:type="arc" use="optional" order="593" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_EllicottCity1213MDMember" xlink:label="loc_hcp_EllicottCity1213MDMember" xlink:title="EllicottCity1213MDMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_EllicottCity1213MDMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_EllicottCity1213MDMember" xlink:type="arc" use="optional" order="594" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_GlenBurnie361MDMember" xlink:label="loc_hcp_GlenBurnie361MDMember" xlink:title="GlenBurnie361MDMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_GlenBurnie361MDMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_GlenBurnie361MDMember" xlink:type="arc" use="optional" order="595" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Towson1052MDMember" xlink:label="loc_hcp_Towson1052MDMember" xlink:title="Towson1052MDMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Towson1052MDMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Towson1052MDMember" xlink:type="arc" use="optional" order="596" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Minneapolis240MNMember" xlink:label="loc_hcp_Minneapolis240MNMember" xlink:title="Minneapolis240MNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Minneapolis240MNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Minneapolis240MNMember" xlink:type="arc" use="optional" order="597" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Minneapolis300MNMember" xlink:label="loc_hcp_Minneapolis300MNMember" xlink:title="Minneapolis300MNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Minneapolis300MNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Minneapolis300MNMember" xlink:type="arc" use="optional" order="598" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Independence2032MOMember" xlink:label="loc_hcp_Independence2032MOMember" xlink:title="Independence2032MOMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Independence2032MOMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Independence2032MOMember" xlink:type="arc" use="optional" order="599" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Flowood1078MSMember" xlink:label="loc_hcp_Flowood1078MSMember" xlink:title="Flowood1078MSMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Flowood1078MSMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Flowood1078MSMember" xlink:type="arc" use="optional" order="600" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Jackson1059MSMember" xlink:label="loc_hcp_Jackson1059MSMember" xlink:title="Jackson1059MSMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Jackson1059MSMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Jackson1059MSMember" xlink:type="arc" use="optional" order="601" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Jackson1060MSMember" xlink:label="loc_hcp_Jackson1060MSMember" xlink:title="Jackson1060MSMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Jackson1060MSMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Jackson1060MSMember" xlink:type="arc" use="optional" order="602" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Omaha1068NEMember" xlink:label="loc_hcp_Omaha1068NEMember" xlink:title="Omaha1068NEMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Omaha1068NEMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Omaha1068NEMember" xlink:type="arc" use="optional" order="603" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Albuquerque729NMMember" xlink:label="loc_hcp_Albuquerque729NMMember" xlink:title="Albuquerque729NMMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Albuquerque729NMMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Albuquerque729NMMember" xlink:type="arc" use="optional" order="604" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Elko348NVMember" xlink:label="loc_hcp_Elko348NVMember" xlink:title="Elko348NVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Elko348NVMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Elko348NVMember" xlink:type="arc" use="optional" order="605" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LasVegas571NVMember" xlink:label="loc_hcp_LasVegas571NVMember" xlink:title="LasVegas571NVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LasVegas571NVMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LasVegas571NVMember" xlink:type="arc" use="optional" order="606" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LasVegas660NVMember" xlink:label="loc_hcp_LasVegas660NVMember" xlink:title="LasVegas660NVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LasVegas660NVMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LasVegas660NVMember" xlink:type="arc" use="optional" order="607" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LasVegas661NVMember" xlink:label="loc_hcp_LasVegas661NVMember" xlink:title="LasVegas661NVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LasVegas661NVMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LasVegas661NVMember" xlink:type="arc" use="optional" order="608" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LasVegas662NVMember" xlink:label="loc_hcp_LasVegas662NVMember" xlink:title="LasVegas662NVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LasVegas662NVMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LasVegas662NVMember" xlink:type="arc" use="optional" order="609" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LasVegas663NVMember" xlink:label="loc_hcp_LasVegas663NVMember" xlink:title="LasVegas663NVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LasVegas663NVMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LasVegas663NVMember" xlink:type="arc" use="optional" order="610" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LasVegas664NVMember" xlink:label="loc_hcp_LasVegas664NVMember" xlink:title="LasVegas664NVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LasVegas664NVMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LasVegas664NVMember" xlink:type="arc" use="optional" order="611" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_LasVegas691NVMember" xlink:label="loc_hcp_LasVegas691NVMember" xlink:title="LasVegas691NVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_LasVegas691NVMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_LasVegas691NVMember" xlink:type="arc" use="optional" order="612" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Mesquite2037NVMember" xlink:label="loc_hcp_Mesquite2037NVMember" xlink:title="Mesquite2037NVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Mesquite2037NVMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Mesquite2037NVMember" xlink:type="arc" use="optional" order="613" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Cleveland1285OHMember" xlink:label="loc_hcp_Cleveland1285OHMember" xlink:title="Cleveland1285OHMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Cleveland1285OHMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Cleveland1285OHMember" xlink:type="arc" use="optional" order="614" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Harrison400OHMember" xlink:label="loc_hcp_Harrison400OHMember" xlink:title="Harrison400OHMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Harrison400OHMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Harrison400OHMember" xlink:type="arc" use="optional" order="615" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Durant1054OKMember" xlink:label="loc_hcp_Durant1054OKMember" xlink:title="Durant1054OKMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Durant1054OKMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Durant1054OKMember" xlink:type="arc" use="optional" order="616" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Owasso817OKMember" xlink:label="loc_hcp_Owasso817OKMember" xlink:title="Owasso817OKMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Owasso817OKMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Owasso817OKMember" xlink:type="arc" use="optional" order="617" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Roseburg404ORMember" xlink:label="loc_hcp_Roseburg404ORMember" xlink:title="Roseburg404ORMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Roseburg404ORMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Roseburg404ORMember" xlink:type="arc" use="optional" order="618" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Clarksville252TNMember" xlink:label="loc_hcp_Clarksville252TNMember" xlink:title="Clarksville252TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Clarksville252TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Clarksville252TNMember" xlink:type="arc" use="optional" order="619" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hendersonville624TNMember" xlink:label="loc_hcp_Hendersonville624TNMember" xlink:title="Hendersonville624TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hendersonville624TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hendersonville624TNMember" xlink:type="arc" use="optional" order="620" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hermitage559TNMember" xlink:label="loc_hcp_Hermitage559TNMember" xlink:title="Hermitage559TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hermitage559TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hermitage559TNMember" xlink:type="arc" use="optional" order="621" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hermitage561TNMember" xlink:label="loc_hcp_Hermitage561TNMember" xlink:title="Hermitage561TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hermitage561TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hermitage561TNMember" xlink:type="arc" use="optional" order="622" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Hermitage562TNMember" xlink:label="loc_hcp_Hermitage562TNMember" xlink:title="Hermitage562TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Hermitage562TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Hermitage562TNMember" xlink:type="arc" use="optional" order="623" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Knoxville154TNMember" xlink:label="loc_hcp_Knoxville154TNMember" xlink:title="Knoxville154TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Knoxville154TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Knoxville154TNMember" xlink:type="arc" use="optional" order="624" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Nashville625TNMember" xlink:label="loc_hcp_Nashville625TNMember" xlink:title="Nashville625TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Nashville625TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Nashville625TNMember" xlink:type="arc" use="optional" order="625" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Nashville626TNMember" xlink:label="loc_hcp_Nashville626TNMember" xlink:title="Nashville626TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Nashville626TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Nashville626TNMember" xlink:type="arc" use="optional" order="626" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Nashville627TNMember" xlink:label="loc_hcp_Nashville627TNMember" xlink:title="Nashville627TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Nashville627TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Nashville627TNMember" xlink:type="arc" use="optional" order="627" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Nashville628TNMember" xlink:label="loc_hcp_Nashville628TNMember" xlink:title="Nashville628TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Nashville628TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Nashville628TNMember" xlink:type="arc" use="optional" order="628" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Nashville630TNMember" xlink:label="loc_hcp_Nashville630TNMember" xlink:title="Nashville630TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Nashville630TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Nashville630TNMember" xlink:type="arc" use="optional" order="629" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Nashville631TNMember" xlink:label="loc_hcp_Nashville631TNMember" xlink:title="Nashville631TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Nashville631TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Nashville631TNMember" xlink:type="arc" use="optional" order="630" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Nashville632TNMember" xlink:label="loc_hcp_Nashville632TNMember" xlink:title="Nashville632TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Nashville632TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Nashville632TNMember" xlink:type="arc" use="optional" order="631" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Nashville633TNMember" xlink:label="loc_hcp_Nashville633TNMember" xlink:title="Nashville633TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Nashville633TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Nashville633TNMember" xlink:type="arc" use="optional" order="632" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Nashville634TNMember" xlink:label="loc_hcp_Nashville634TNMember" xlink:title="Nashville634TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Nashville634TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Nashville634TNMember" xlink:type="arc" use="optional" order="633" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Nashville636TNMember" xlink:label="loc_hcp_Nashville636TNMember" xlink:title="Nashville636TNMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Nashville636TNMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Nashville636TNMember" xlink:type="arc" use="optional" order="634" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Arlington573TXMember" xlink:label="loc_hcp_Arlington573TXMember" xlink:title="Arlington573TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Arlington573TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Arlington573TXMember" xlink:type="arc" use="optional" order="635" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Conroe576TXMember" xlink:label="loc_hcp_Conroe576TXMember" xlink:title="Conroe576TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Conroe576TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Conroe576TXMember" xlink:type="arc" use="optional" order="636" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Conroe577TXMember" xlink:label="loc_hcp_Conroe577TXMember" xlink:title="Conroe577TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Conroe577TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Conroe577TXMember" xlink:type="arc" use="optional" order="637" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Conroe578TXMember" xlink:label="loc_hcp_Conroe578TXMember" xlink:title="Conroe578TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Conroe578TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Conroe578TXMember" xlink:type="arc" use="optional" order="638" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Conroe579TXMember" xlink:label="loc_hcp_Conroe579TXMember" xlink:title="Conroe579TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Conroe579TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Conroe579TXMember" xlink:type="arc" use="optional" order="639" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CorpusChristi581TXMember" xlink:label="loc_hcp_CorpusChristi581TXMember" xlink:title="CorpusChristi581TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_CorpusChristi581TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_CorpusChristi581TXMember" xlink:type="arc" use="optional" order="640" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CorpusChristi600TXMember" xlink:label="loc_hcp_CorpusChristi600TXMember" xlink:title="CorpusChristi600TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_CorpusChristi600TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_CorpusChristi600TXMember" xlink:type="arc" use="optional" order="641" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CorpusChristi601TXMember" xlink:label="loc_hcp_CorpusChristi601TXMember" xlink:title="CorpusChristi601TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_CorpusChristi601TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_CorpusChristi601TXMember" xlink:type="arc" use="optional" order="642" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Dallas582TXMember" xlink:label="loc_hcp_Dallas582TXMember" xlink:title="Dallas582TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Dallas582TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Dallas582TXMember" xlink:type="arc" use="optional" order="643" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Dallas1314TXMember" xlink:label="loc_hcp_Dallas1314TXMember" xlink:title="Dallas1314TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Dallas1314TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Dallas1314TXMember" xlink:type="arc" use="optional" order="644" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FortWorth583TXMember" xlink:label="loc_hcp_FortWorth583TXMember" xlink:title="FortWorth583TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_FortWorth583TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_FortWorth583TXMember" xlink:type="arc" use="optional" order="645" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FortWorth805TXMember" xlink:label="loc_hcp_FortWorth805TXMember" xlink:title="FortWorth805TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_FortWorth805TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_FortWorth805TXMember" xlink:type="arc" use="optional" order="646" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FortWorth806TXMember" xlink:label="loc_hcp_FortWorth806TXMember" xlink:title="FortWorth806TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_FortWorth806TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_FortWorth806TXMember" xlink:type="arc" use="optional" order="647" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Granbury1061TXMember" xlink:label="loc_hcp_Granbury1061TXMember" xlink:title="Granbury1061TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Granbury1061TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Granbury1061TXMember" xlink:type="arc" use="optional" order="648" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Houston430TXMember" xlink:label="loc_hcp_Houston430TXMember" xlink:title="Houston430TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Houston430TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Houston430TXMember" xlink:type="arc" use="optional" order="649" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Houston446TXMember" xlink:label="loc_hcp_Houston446TXMember" xlink:title="Houston446TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Houston446TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Houston446TXMember" xlink:type="arc" use="optional" order="650" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Houston586TXMember" xlink:label="loc_hcp_Houston586TXMember" xlink:title="Houston586TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Houston586TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Houston586TXMember" xlink:type="arc" use="optional" order="651" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Houston589TXMember" xlink:label="loc_hcp_Houston589TXMember" xlink:title="Houston589TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Houston589TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Houston589TXMember" xlink:type="arc" use="optional" order="652" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Houston670TXMember" xlink:label="loc_hcp_Houston670TXMember" xlink:title="Houston670TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Houston670TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Houston670TXMember" xlink:type="arc" use="optional" order="653" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Houston702TXMember" xlink:label="loc_hcp_Houston702TXMember" xlink:title="Houston702TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Houston702TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Houston702TXMember" xlink:type="arc" use="optional" order="654" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Houston1044TXMember" xlink:label="loc_hcp_Houston1044TXMember" xlink:title="Houston1044TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Houston1044TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Houston1044TXMember" xlink:type="arc" use="optional" order="655" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Irving590TXMember" xlink:label="loc_hcp_Irving590TXMember" xlink:title="Irving590TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Irving590TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Irving590TXMember" xlink:type="arc" use="optional" order="656" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Irving700TXMember" xlink:label="loc_hcp_Irving700TXMember" xlink:title="Irving700TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Irving700TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Irving700TXMember" xlink:type="arc" use="optional" order="657" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Irving1202TXMember" xlink:label="loc_hcp_Irving1202TXMember" xlink:title="Irving1202TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Irving1202TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Irving1202TXMember" xlink:type="arc" use="optional" order="658" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Irving1207TXMember" xlink:label="loc_hcp_Irving1207TXMember" xlink:title="Irving1207TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Irving1207TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Irving1207TXMember" xlink:type="arc" use="optional" order="659" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Lancaster1062TXMember" xlink:label="loc_hcp_Lancaster1062TXMember" xlink:title="Lancaster1062TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Lancaster1062TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Lancaster1062TXMember" xlink:type="arc" use="optional" order="660" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Lancaster2195TXMember" xlink:label="loc_hcp_Lancaster2195TXMember" xlink:title="Lancaster2195TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Lancaster2195TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Lancaster2195TXMember" xlink:type="arc" use="optional" order="661" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Lewisville591TXMember" xlink:label="loc_hcp_Lewisville591TXMember" xlink:title="Lewisville591TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Lewisville591TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Lewisville591TXMember" xlink:type="arc" use="optional" order="662" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Longview144TXMember" xlink:label="loc_hcp_Longview144TXMember" xlink:title="Longview144TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Longview144TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Longview144TXMember" xlink:type="arc" use="optional" order="663" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Lufkin143TXMember" xlink:label="loc_hcp_Lufkin143TXMember" xlink:title="Lufkin143TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Lufkin143TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Lufkin143TXMember" xlink:type="arc" use="optional" order="664" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_McKinney568TXMember" xlink:label="loc_hcp_McKinney568TXMember" xlink:title="McKinney568TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_McKinney568TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_McKinney568TXMember" xlink:type="arc" use="optional" order="665" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_McKinney569TXMember" xlink:label="loc_hcp_McKinney569TXMember" xlink:title="McKinney569TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_McKinney569TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_McKinney569TXMember" xlink:type="arc" use="optional" order="666" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NassauBay596TXMember" xlink:label="loc_hcp_NassauBay596TXMember" xlink:title="NassauBay596TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_NassauBay596TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_NassauBay596TXMember" xlink:type="arc" use="optional" order="667" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NorthRichlandHills1079TXMember" xlink:label="loc_hcp_NorthRichlandHills1079TXMember" xlink:title="NorthRichlandHills1079TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_NorthRichlandHills1079TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_NorthRichlandHills1079TXMember" xlink:type="arc" use="optional" order="668" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_NorthRichlandHills2048TXMember" xlink:label="loc_hcp_NorthRichlandHills2048TXMember" xlink:title="NorthRichlandHills2048TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_NorthRichlandHills2048TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_NorthRichlandHills2048TXMember" xlink:type="arc" use="optional" order="669" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Pearland1048TXMember" xlink:label="loc_hcp_Pearland1048TXMember" xlink:title="Pearland1048TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Pearland1048TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Pearland1048TXMember" xlink:type="arc" use="optional" order="670" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Plano447TXMember" xlink:label="loc_hcp_Plano447TXMember" xlink:title="Plano447TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Plano447TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Plano447TXMember" xlink:type="arc" use="optional" order="671" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Plano597TXMember" xlink:label="loc_hcp_Plano597TXMember" xlink:title="Plano597TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Plano597TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Plano597TXMember" xlink:type="arc" use="optional" order="672" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Plano672TXMember" xlink:label="loc_hcp_Plano672TXMember" xlink:title="Plano672TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Plano672TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Plano672TXMember" xlink:type="arc" use="optional" order="673" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Plano1284TXMember" xlink:label="loc_hcp_Plano1284TXMember" xlink:title="Plano1284TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Plano1284TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Plano1284TXMember" xlink:type="arc" use="optional" order="674" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Plano1286TXMember" xlink:label="loc_hcp_Plano1286TXMember" xlink:title="Plano1286TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Plano1286TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Plano1286TXMember" xlink:type="arc" use="optional" order="675" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanAntonio815TXMember" xlink:label="loc_hcp_SanAntonio815TXMember" xlink:title="SanAntonio815TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanAntonio815TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanAntonio815TXMember" xlink:type="arc" use="optional" order="676" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanAntonio816TXMember" xlink:label="loc_hcp_SanAntonio816TXMember" xlink:title="SanAntonio816TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanAntonio816TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanAntonio816TXMember" xlink:type="arc" use="optional" order="677" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanAntonio1591TXMember" xlink:label="loc_hcp_SanAntonio1591TXMember" xlink:title="SanAntonio1591TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanAntonio1591TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanAntonio1591TXMember" xlink:type="arc" use="optional" order="678" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SanAntonio1977TXMember" xlink:label="loc_hcp_SanAntonio1977TXMember" xlink:title="SanAntonio1977TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SanAntonio1977TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SanAntonio1977TXMember" xlink:type="arc" use="optional" order="679" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Sugarland598TXMember" xlink:label="loc_hcp_Sugarland598TXMember" xlink:title="Sugarland598TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Sugarland598TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Sugarland598TXMember" xlink:type="arc" use="optional" order="680" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Texarkana1081TXMember" xlink:label="loc_hcp_Texarkana1081TXMember" xlink:title="Texarkana1081TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Texarkana1081TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Texarkana1081TXMember" xlink:type="arc" use="optional" order="681" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_TexasCity599TXMember" xlink:label="loc_hcp_TexasCity599TXMember" xlink:title="TexasCity599TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_TexasCity599TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_TexasCity599TXMember" xlink:type="arc" use="optional" order="682" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Victoria152TXMember" xlink:label="loc_hcp_Victoria152TXMember" xlink:title="Victoria152TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Victoria152TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Victoria152TXMember" xlink:type="arc" use="optional" order="683" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Bountiful1592UTMember" xlink:label="loc_hcp_Bountiful1592UTMember" xlink:title="Bountiful1592UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Bountiful1592UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Bountiful1592UTMember" xlink:type="arc" use="optional" order="684" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Bountiful169UTMember" xlink:label="loc_hcp_Bountiful169UTMember" xlink:title="Bountiful169UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Bountiful169UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Bountiful169UTMember" xlink:type="arc" use="optional" order="685" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_CastleDale346UTMember" xlink:label="loc_hcp_CastleDale346UTMember" xlink:title="CastleDale346UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_CastleDale346UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_CastleDale346UTMember" xlink:type="arc" use="optional" order="686" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Centerville347UTMember" xlink:label="loc_hcp_Centerville347UTMember" xlink:title="Centerville347UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Centerville347UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Centerville347UTMember" xlink:type="arc" use="optional" order="687" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Draper2035UTMember" xlink:label="loc_hcp_Draper2035UTMember" xlink:title="Draper2035UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Draper2035UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Draper2035UTMember" xlink:type="arc" use="optional" order="688" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Grantsville350UTMember" xlink:label="loc_hcp_Grantsville350UTMember" xlink:title="Grantsville350UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Grantsville350UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Grantsville350UTMember" xlink:type="arc" use="optional" order="689" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Kaysville469UTMember" xlink:label="loc_hcp_Kaysville469UTMember" xlink:title="Kaysville469UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Kaysville469UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Kaysville469UTMember" xlink:type="arc" use="optional" order="690" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Layton456UTMember" xlink:label="loc_hcp_Layton456UTMember" xlink:title="Layton456UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Layton456UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Layton456UTMember" xlink:type="arc" use="optional" order="691" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Layton2042UTMember" xlink:label="loc_hcp_Layton2042UTMember" xlink:title="Layton2042UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Layton2042UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Layton2042UTMember" xlink:type="arc" use="optional" order="692" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Ogden359UTMember" xlink:label="loc_hcp_Ogden359UTMember" xlink:title="Ogden359UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Ogden359UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Ogden359UTMember" xlink:type="arc" use="optional" order="693" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Ogden1283UTMember" xlink:label="loc_hcp_Ogden1283UTMember" xlink:title="Ogden1283UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Ogden1283UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Ogden1283UTMember" xlink:type="arc" use="optional" order="694" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Orem357UTMember" xlink:label="loc_hcp_Orem357UTMember" xlink:title="Orem357UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Orem357UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Orem357UTMember" xlink:type="arc" use="optional" order="695" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Providence371UTMember" xlink:label="loc_hcp_Providence371UTMember" xlink:title="Providence371UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Providence371UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Providence371UTMember" xlink:type="arc" use="optional" order="696" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity353UTMember" xlink:label="loc_hcp_SaltLakeCity353UTMember" xlink:title="SaltLakeCity353UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity353UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity353UTMember" xlink:type="arc" use="optional" order="697" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity354UTMember" xlink:label="loc_hcp_SaltLakeCity354UTMember" xlink:title="SaltLakeCity354UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity354UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity354UTMember" xlink:type="arc" use="optional" order="698" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity355UTMember" xlink:label="loc_hcp_SaltLakeCity355UTMember" xlink:title="SaltLakeCity355UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity355UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity355UTMember" xlink:type="arc" use="optional" order="699" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity467UTMember" xlink:label="loc_hcp_SaltLakeCity467UTMember" xlink:title="SaltLakeCity467UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity467UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity467UTMember" xlink:type="arc" use="optional" order="700" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity566UTMember" xlink:label="loc_hcp_SaltLakeCity566UTMember" xlink:title="SaltLakeCity566UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity566UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity566UTMember" xlink:type="arc" use="optional" order="701" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SaltLakeCity2041UTMember" xlink:label="loc_hcp_SaltLakeCity2041UTMember" xlink:title="SaltLakeCity2041UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_SaltLakeCity2041UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_SaltLakeCity2041UTMember" xlink:type="arc" use="optional" order="702" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Sandy2033UTMember" xlink:label="loc_hcp_Sandy2033UTMember" xlink:title="Sandy2033UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Sandy2033UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Sandy2033UTMember" xlink:type="arc" use="optional" order="703" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Springville358UTMember" xlink:label="loc_hcp_Springville358UTMember" xlink:title="Springville358UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Springville358UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Springville358UTMember" xlink:type="arc" use="optional" order="704" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Stansbury482UTMember" xlink:label="loc_hcp_Stansbury482UTMember" xlink:title="Stansbury482UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Stansbury482UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Stansbury482UTMember" xlink:type="arc" use="optional" order="705" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_WashingtonTerrace351UTMember" xlink:label="loc_hcp_WashingtonTerrace351UTMember" xlink:title="WashingtonTerrace351UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_WashingtonTerrace351UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_WashingtonTerrace351UTMember" xlink:type="arc" use="optional" order="706" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_WashingtonTerrace352UTMember" xlink:label="loc_hcp_WashingtonTerrace352UTMember" xlink:title="WashingtonTerrace352UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_WashingtonTerrace352UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_WashingtonTerrace352UTMember" xlink:type="arc" use="optional" order="707" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_WestJordan2034UTMember" xlink:label="loc_hcp_WestJordan2034UTMember" xlink:title="WestJordan2034UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_WestJordan2034UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_WestJordan2034UTMember" xlink:type="arc" use="optional" order="708" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_WestJordan2036UTMember" xlink:label="loc_hcp_WestJordan2036UTMember" xlink:title="WestJordan2036UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_WestJordan2036UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_WestJordan2036UTMember" xlink:type="arc" use="optional" order="709" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_WestValleyCity495UTMember" xlink:label="loc_hcp_WestValleyCity495UTMember" xlink:title="WestValleyCity495UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_WestValleyCity495UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_WestValleyCity495UTMember" xlink:type="arc" use="optional" order="710" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_WestValleyCity349UTMember" xlink:label="loc_hcp_WestValleyCity349UTMember" xlink:title="WestValleyCity349UTMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_WestValleyCity349UTMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_WestValleyCity349UTMember" xlink:type="arc" use="optional" order="711" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Fairfax1208VAMember" xlink:label="loc_hcp_Fairfax1208VAMember" xlink:title="Fairfax1208VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Fairfax1208VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Fairfax1208VAMember" xlink:type="arc" use="optional" order="712" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Reston572VAMember" xlink:label="loc_hcp_Reston572VAMember" xlink:title="Reston572VAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Reston572VAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Reston572VAMember" xlink:type="arc" use="optional" order="713" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Renton448WAMember" xlink:label="loc_hcp_Renton448WAMember" xlink:title="Renton448WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Renton448WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Renton448WAMember" xlink:type="arc" use="optional" order="714" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Seattle781WAMember" xlink:label="loc_hcp_Seattle781WAMember" xlink:title="Seattle781WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Seattle781WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Seattle781WAMember" xlink:type="arc" use="optional" order="715" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Seattle782WAMember" xlink:label="loc_hcp_Seattle782WAMember" xlink:title="Seattle782WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Seattle782WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Seattle782WAMember" xlink:type="arc" use="optional" order="716" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Seattle783WAMember" xlink:label="loc_hcp_Seattle783WAMember" xlink:title="Seattle783WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Seattle783WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Seattle783WAMember" xlink:type="arc" use="optional" order="717" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Seattle785WAMember" xlink:label="loc_hcp_Seattle785WAMember" xlink:title="Seattle785WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Seattle785WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Seattle785WAMember" xlink:type="arc" use="optional" order="718" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Seattle1385WAMember" xlink:label="loc_hcp_Seattle1385WAMember" xlink:title="Seattle1385WAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Seattle1385WAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Seattle1385WAMember" xlink:type="arc" use="optional" order="719" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Evanston2038WYMember" xlink:label="loc_hcp_Evanston2038WYMember" xlink:title="Evanston2038WYMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Evanston2038WYMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Evanston2038WYMember" xlink:type="arc" use="optional" order="720" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Coyoacan884DFMember" xlink:label="loc_hcp_Coyoacan884DFMember" xlink:title="Coyoacan884DFMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Coyoacan884DFMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Coyoacan884DFMember" xlink:type="arc" use="optional" order="721" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Sherwood126ARMember" xlink:label="loc_hcp_Sherwood126ARMember" xlink:title="Sherwood126ARMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Sherwood126ARMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Sherwood126ARMember" xlink:type="arc" use="optional" order="722" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Glendale113AZMember" xlink:label="loc_hcp_Glendale113AZMember" xlink:title="Glendale113AZMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Glendale113AZMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Glendale113AZMember" xlink:type="arc" use="optional" order="723" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Fresno1038CAMember" xlink:label="loc_hcp_Fresno1038CAMember" xlink:title="Fresno1038CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Fresno1038CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Fresno1038CAMember" xlink:type="arc" use="optional" order="724" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Irvine423CAMember" xlink:label="loc_hcp_Irvine423CAMember" xlink:title="Irvine423CAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Irvine423CAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Irvine423CAMember" xlink:type="arc" use="optional" order="725" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ColoradoSprings127COMember" xlink:label="loc_hcp_ColoradoSprings127COMember" xlink:title="ColoradoSprings127COMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_ColoradoSprings127COMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_ColoradoSprings127COMember" xlink:type="arc" use="optional" order="726" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Atlanta887GAMember" xlink:label="loc_hcp_Atlanta887GAMember" xlink:title="Atlanta887GAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Atlanta887GAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Atlanta887GAMember" xlink:type="arc" use="optional" order="727" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_OverlandPark112KSMember" xlink:label="loc_hcp_OverlandPark112KSMember" xlink:title="OverlandPark112KSMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_OverlandPark112KSMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_OverlandPark112KSMember" xlink:type="arc" use="optional" order="728" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BatonRouge1383LAMember" xlink:label="loc_hcp_BatonRouge1383LAMember" xlink:title="BatonRouge1383LAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_BatonRouge1383LAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_BatonRouge1383LAMember" xlink:type="arc" use="optional" order="729" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Slidell877LAMember" xlink:label="loc_hcp_Slidell877LAMember" xlink:title="Slidell877LAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Slidell877LAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Slidell877LAMember" xlink:type="arc" use="optional" order="730" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Slidell2031LAMember" xlink:label="loc_hcp_Slidell2031LAMember" xlink:title="Slidell2031LAMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Slidell2031LAMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Slidell2031LAMember" xlink:type="arc" use="optional" order="731" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Dallas886TXMember" xlink:label="loc_hcp_Dallas886TXMember" xlink:title="Dallas886TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Dallas886TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Dallas886TXMember" xlink:type="arc" use="optional" order="732" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Dallas1319TXMember" xlink:label="loc_hcp_Dallas1319TXMember" xlink:title="Dallas1319TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Dallas1319TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Dallas1319TXMember" xlink:type="arc" use="optional" order="733" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Plano1384TXMember" xlink:label="loc_hcp_Plano1384TXMember" xlink:title="Plano1384TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Plano1384TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Plano1384TXMember" xlink:type="arc" use="optional" order="734" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_Webster2198TXMember" xlink:label="loc_hcp_Webster2198TXMember" xlink:title="Webster2198TXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="loc_hcp_Webster2198TXMember" xlink:title="Definition : loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain to loc_hcp_Webster2198TXMember" xlink:type="arc" use="optional" order="735" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureNetInvestmentInDirectFinancingLeasesTables">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:title="AccountsNotesAndLoansReceivableLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:title="ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentAxis" xlink:label="loc_invest_InvestmentAxis" xlink:title="InvestmentAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentDomain" xlink:label="loc_invest_InvestmentDomain" xlink:title="InvestmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_invest_InvestmentAxis" xlink:to="loc_invest_InvestmentDomain" xlink:title="Definition : loc_invest_InvestmentAxis to loc_invest_InvestmentDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_DFLPortfolioMember" xlink:label="loc_hcp_DFLPortfolioMember" xlink:title="DFLPortfolioMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_invest_InvestmentDomain" xlink:to="loc_hcp_DFLPortfolioMember" xlink:title="Definition : loc_invest_InvestmentDomain to loc_hcp_DFLPortfolioMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:to="loc_invest_InvestmentAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable to loc_invest_InvestmentAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_ScheduleOfNetInvestmentInDirectFinancingAndSalesTypeLeasesTableTextBlock" xlink:label="loc_hcp_ScheduleOfNetInvestmentInDirectFinancingAndSalesTypeLeasesTableTextBlock" xlink:title="ScheduleOfNetInvestmentInDirectFinancingAndSalesTypeLeasesTableTextBlock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_hcp_ScheduleOfNetInvestmentInDirectFinancingAndSalesTypeLeasesTableTextBlock" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_hcp_ScheduleOfNetInvestmentInDirectFinancingAndSalesTypeLeasesTableTextBlock" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock" xlink:label="loc_us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock" xlink:title="FinancingReceivableCreditQualityIndicatorsTableTextBlock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfFinancingReceivablesMinimumPaymentsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivablesMinimumPaymentsTableTextBlock" xlink:title="ScheduleOfFinancingReceivablesMinimumPaymentsTableTextBlock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivablesMinimumPaymentsTableTextBlock" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_ScheduleOfFinancingReceivablesMinimumPaymentsTableTextBlock" xlink:type="arc" use="optional" order="8000" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureLoansReceivableTables">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:title="AccountsNotesAndLoansReceivableLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:title="ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:type="arc" use="optional" order="1" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:title="AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReceivableTypeDomain" xlink:label="loc_us-gaap_ReceivableTypeDomain" xlink:title="ReceivableTypeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:to="loc_us-gaap_ReceivableTypeDomain" xlink:title="Definition : loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis to loc_us-gaap_ReceivableTypeDomain" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LoansAndFinanceReceivablesMember" xlink:label="loc_us-gaap_LoansAndFinanceReceivablesMember" xlink:title="LoansAndFinanceReceivablesMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain" xlink:to="loc_us-gaap_LoansAndFinanceReceivablesMember" xlink:title="Definition : loc_us-gaap_ReceivableTypeDomain to loc_us-gaap_LoansAndFinanceReceivablesMember" xlink:type="arc" use="optional" order="1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable to loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" xlink:title="ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock" xlink:label="loc_us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock" xlink:title="FinancingReceivableCreditQualityIndicatorsTableTextBlock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock" xlink:label="loc_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock" xlink:title="AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfCreditLossesRelatedToFinancingReceivablesCurrentAndNoncurrentTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfCreditLossesRelatedToFinancingReceivablesCurrentAndNoncurrentTableTextBlock" xlink:title="ScheduleOfCreditLossesRelatedToFinancingReceivablesCurrentAndNoncurrentTableTextBlock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:to="loc_us-gaap_ScheduleOfCreditLossesRelatedToFinancingReceivablesCurrentAndNoncurrentTableTextBlock" xlink:title="Definition : loc_us-gaap_AccountsNotesAndLoansReceivableLineItems to loc_us-gaap_ScheduleOfCreditLossesRelatedToFinancingReceivablesCurrentAndNoncurrentTableTextBlock" xlink:type="arc" use="optional" order="8000" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureRealEstatePropertyInvestmentsTables">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:title="ScheduleOfBusinessAcquisitionsByAcquisitionTable" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="BusinessAcquisitionAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_BusinessAcquisitionAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_BusinessAcquisitionAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems" xlink:title="BusinessAcquisitionLineItems" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:type="arc" use="optional" order="8000" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="BusinessAcquisitionAcquireeDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAxis to loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingMember" xlink:label="loc_hcp_SeniorHousingMember" xlink:title="SeniorHousingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BlackstoneJVMember" xlink:label="loc_hcp_BlackstoneJVMember" xlink:title="BlackstoneJVMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="loc_hcp_BlackstoneJVMember" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionAcquireeDomain to loc_hcp_BlackstoneJVMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionProFormaInformationTextBlock" xlink:label="loc_us-gaap_BusinessAcquisitionProFormaInformationTextBlock" xlink:title="BusinessAcquisitionProFormaInformationTextBlock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems" xlink:to="loc_us-gaap_BusinessAcquisitionProFormaInformationTextBlock" xlink:title="Definition : loc_us-gaap_BusinessAcquisitionLineItems to loc_us-gaap_BusinessAcquisitionProFormaInformationTextBlock" xlink:type="arc" use="optional" order="8001" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/DisclosureIntangiblesDetails">
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassTable" xlink:label="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassTable" xlink:title="FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassTable" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassAxis" xlink:label="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassAxis" xlink:title="FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassTable" xlink:to="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassAxis" xlink:title="Definition : loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassTable to loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassAxis" xlink:type="arc" use="optional" order="1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:title="FiniteLivedIntangibleAssetsByMajorClassAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassTable" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:title="Definition : loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassTable to loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:type="arc" use="optional" order="2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis" xlink:title="StatementScenarioAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassTable" xlink:to="loc_us-gaap_StatementScenarioAxis" xlink:title="Definition : loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassTable to loc_us-gaap_StatementScenarioAxis" xlink:type="arc" use="optional" order="3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassTable" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:title="Definition : loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassTable to loc_us-gaap_StatementBusinessSegmentsAxis" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FiniteLivedIntangibleAssetsAndLiabilitiesLineItems" xlink:label="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesLineItems" xlink:title="FiniteLivedIntangibleAssetsAndLiabilitiesLineItems" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesLineItems" xlink:to="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassTable" xlink:title="Definition : loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesLineItems to loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassTable" xlink:type="arc" use="optional" order="8000" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis" xlink:to="loc_us-gaap_SegmentDomain" xlink:title="Definition : loc_us-gaap_StatementBusinessSegmentsAxis to loc_us-gaap_SegmentDomain" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementScenarioAxis" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain" xlink:title="Definition : loc_us-gaap_StatementScenarioAxis to loc_us-gaap_ScenarioUnspecifiedDomain" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain" xlink:label="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain" xlink:title="FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassAxis" xlink:to="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain" xlink:title="Definition : loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassAxis to loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:title="FiniteLivedIntangibleAssetsMajorClassNameDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:title="Definition : loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis to loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_SeniorHousingMember" xlink:label="loc_hcp_SeniorHousingMember" xlink:title="SeniorHousingMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain" xlink:to="loc_hcp_SeniorHousingMember" xlink:title="Definition : loc_us-gaap_SegmentDomain to loc_hcp_SeniorHousingMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="loc_us-gaap_ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain" xlink:to="loc_us-gaap_ScenarioPreviouslyReportedMember" xlink:title="Definition : loc_us-gaap_ScenarioUnspecifiedDomain to loc_us-gaap_ScenarioPreviouslyReportedMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LeasesAcquiredInPlaceMember" xlink:label="loc_us-gaap_LeasesAcquiredInPlaceMember" xlink:title="LeasesAcquiredInPlaceMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain" xlink:to="loc_us-gaap_LeasesAcquiredInPlaceMember" xlink:title="Definition : loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain to loc_us-gaap_LeasesAcquiredInPlaceMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AboveMarketLeasesMember" xlink:label="loc_us-gaap_AboveMarketLeasesMember" xlink:title="AboveMarketLeasesMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="loc_us-gaap_AboveMarketLeasesMember" xlink:title="Definition : loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain to loc_us-gaap_AboveMarketLeasesMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain" xlink:label="FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain_1" xlink:title="FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassAxis" xlink:to="FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain_1" xlink:title="Definition : loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassAxis to loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="FiniteLivedIntangibleAssetsMajorClassNameDomain_2" xlink:title="FiniteLivedIntangibleAssetsMajorClassNameDomain_2" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="FiniteLivedIntangibleAssetsMajorClassNameDomain_2" xlink:title="Definition : loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis to loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_TenantLeasesMember" xlink:label="loc_hcp_TenantLeasesMember" xlink:title="TenantLeasesMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain" xlink:to="loc_hcp_TenantLeasesMember" xlink:title="Definition : loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain to loc_hcp_TenantLeasesMember" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_BelowMarketLeasesForLesseeMember" xlink:label="loc_hcp_BelowMarketLeasesForLesseeMember" xlink:title="BelowMarketLeasesForLesseeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="loc_hcp_BelowMarketLeasesForLesseeMember" xlink:title="Definition : loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain to loc_hcp_BelowMarketLeasesForLesseeMember" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BelowMarketLeaseGross" xlink:label="loc_us-gaap_BelowMarketLeaseGross" xlink:title="BelowMarketLeaseGross" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesLineItems" xlink:to="loc_us-gaap_BelowMarketLeaseGross" xlink:title="Definition : loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesLineItems to loc_us-gaap_BelowMarketLeaseGross" xlink:type="arc" use="optional" order="8001" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_GroundLeasesMember" xlink:label="loc_hcp_GroundLeasesMember" xlink:title="GroundLeasesMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain" xlink:to="loc_hcp_GroundLeasesMember" xlink:title="Definition : loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain to loc_hcp_GroundLeasesMember" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_AboveMarketGroundLeasesFiniteLivedIntangibleLiabilitiesGross" xlink:label="loc_hcp_AboveMarketGroundLeasesFiniteLivedIntangibleLiabilitiesGross" xlink:title="AboveMarketGroundLeasesFiniteLivedIntangibleLiabilitiesGross" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesLineItems" xlink:to="loc_hcp_AboveMarketGroundLeasesFiniteLivedIntangibleLiabilitiesGross" xlink:title="Definition : loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesLineItems to loc_hcp_AboveMarketGroundLeasesFiniteLivedIntangibleLiabilitiesGross" xlink:type="arc" use="optional" order="8002" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_MarketLeasesMember" xlink:label="loc_hcp_MarketLeasesMember" xlink:title="MarketLeasesMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain" xlink:to="loc_hcp_MarketLeasesMember" xlink:title="Definition : loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesByMajorClassDomain to loc_hcp_MarketLeasesMember" xlink:type="arc" use="optional" order="8003" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FiniteLivedIntangibleLiabilitiesNet" xlink:label="loc_hcp_FiniteLivedIntangibleLiabilitiesNet" xlink:title="FiniteLivedIntangibleLiabilitiesNet" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesLineItems" xlink:to="loc_hcp_FiniteLivedIntangibleLiabilitiesNet" xlink:title="Definition : loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesLineItems to loc_hcp_FiniteLivedIntangibleLiabilitiesNet" xlink:type="arc" use="optional" order="8003" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:title="FiniteLivedIntangibleAssetUsefulLife" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesLineItems" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:title="Definition : loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesLineItems to loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:type="arc" use="optional" order="8004" />
    <link:loc xlink:type="locator" xlink:href="hcp-20140630.xsd#hcp_FiniteLivedIntangibleLiabilitiesWeightedAverageRemainingAmortizationPeriod" xlink:label="loc_hcp_FiniteLivedIntangibleLiabilitiesWeightedAverageRemainingAmortizationPeriod" xlink:title="FiniteLivedIntangibleLiabilitiesWeightedAverageRemainingAmortizationPeriod" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesLineItems" xlink:to="loc_hcp_FiniteLivedIntangibleLiabilitiesWeightedAverageRemainingAmortizationPeriod" xlink:title="Definition : loc_hcp_FiniteLivedIntangibleAssetsAndLiabilitiesLineItems to loc_hcp_FiniteLivedIntangibleLiabilitiesWeightedAverageRemainingAmortizationPeriod" xlink:type="arc" use="optional" order="8005" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/StatementOfStockholdersEquity">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems" xlink:title="StatementLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable" xlink:title="StatementTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems" xlink:to="loc_us-gaap_StatementTable" xlink:title="Definition : loc_us-gaap_StatementLineItems to loc_us-gaap_StatementTable" xlink:type="arc" order="10" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis" xlink:title="StatementEquityComponentsAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain" xlink:title="EquityComponentDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis" xlink:to="loc_us-gaap_EquityComponentDomain" xlink:title="Definition : loc_us-gaap_StatementEquityComponentsAxis to loc_us-gaap_EquityComponentDomain" xlink:type="arc" order="10" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ParentMember" xlink:label="loc_us-gaap_ParentMember" xlink:title="ParentMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain" xlink:to="loc_us-gaap_ParentMember" xlink:title="Definition : loc_us-gaap_EquityComponentDomain to loc_us-gaap_ParentMember" xlink:type="arc" order="10" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember" xlink:title="CommonStockMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember" xlink:to="loc_us-gaap_CommonStockMember" xlink:title="Definition : loc_us-gaap_ParentMember to loc_us-gaap_CommonStockMember" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:title="IncreaseDecreaseInStockholdersEquityRollForward" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss" xlink:title="ProfitLoss" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="loc_us-gaap_ProfitLoss" xlink:title="Definition : loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward to loc_us-gaap_ProfitLoss" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:title="StockIssuedDuringPeriodValueNewIssues" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:title="StockIssuedDuringPeriodSharesNewIssues" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:title="Definition : loc_us-gaap_StockIssuedDuringPeriodValueNewIssues to loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodValue" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue" xlink:title="StockRepurchasedDuringPeriodValue" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodShares" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares" xlink:title="StockRepurchasedDuringPeriodShares" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockRepurchasedDuringPeriodValue" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares" xlink:title="Definition : loc_us-gaap_StockRepurchasedDuringPeriodValue to loc_us-gaap_StockRepurchasedDuringPeriodShares" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:title="StockIssuedDuringPeriodValueStockOptionsExercised" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:title="StockIssuedDuringPeriodSharesStockOptionsExercised" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:title="Definition : loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised to loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:type="arc" use="optional" order="10" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable" xlink:to="loc_us-gaap_StatementEquityComponentsAxis" xlink:title="Definition : loc_us-gaap_StatementTable to loc_us-gaap_StatementEquityComponentsAxis" xlink:type="arc" order="10" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="EquityComponentDomain_1" xlink:title="EquityComponentDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis" xlink:to="EquityComponentDomain_1" xlink:title="Definition : loc_us-gaap_StatementEquityComponentsAxis to loc_us-gaap_EquityComponentDomain" xlink:type="arc" order="20" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:label="loc_us-gaap_NoncontrollingInterestMember" xlink:title="NoncontrollingInterestMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain" xlink:to="loc_us-gaap_NoncontrollingInterestMember" xlink:title="Definition : loc_us-gaap_EquityComponentDomain to loc_us-gaap_NoncontrollingInterestMember" xlink:type="arc" order="20" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember" xlink:title="AdditionalPaidInCapitalMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember" xlink:title="Definition : loc_us-gaap_ParentMember to loc_us-gaap_AdditionalPaidInCapitalMember" xlink:type="arc" use="optional" order="20" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:title="Definition : loc_us-gaap_StatementLineItems to loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:type="arc" order="20" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:title="OtherComprehensiveIncomeLossNetOfTax" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:title="Definition : loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward to loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:type="arc" use="optional" order="20" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember" xlink:label="loc_us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember" xlink:title="AccumulatedDistributionsInExcessOfNetIncomeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember" xlink:to="loc_us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember" xlink:title="Definition : loc_us-gaap_ParentMember to loc_us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember" xlink:type="arc" use="optional" order="30" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:title="Definition : loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward to loc_us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:type="arc" use="optional" order="30" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:title="AccumulatedOtherComprehensiveIncomeMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:title="Definition : loc_us-gaap_ParentMember to loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:type="arc" use="optional" order="40" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue" xlink:title="Definition : loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward to loc_us-gaap_StockRepurchasedDuringPeriodValue" xlink:type="arc" use="optional" order="40" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:title="Definition : loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward to loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:type="arc" use="optional" order="50" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:title="AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:title="Definition : loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward to loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:type="arc" use="optional" order="60" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DividendsCommonStock" xlink:label="loc_us-gaap_DividendsCommonStock" xlink:title="DividendsCommonStock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="loc_us-gaap_DividendsCommonStock" xlink:title="Definition : loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward to loc_us-gaap_DividendsCommonStock" xlink:type="arc" use="optional" order="70" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" xlink:title="MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" xlink:title="Definition : loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward to loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" xlink:type="arc" use="optional" order="80" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" xlink:label="loc_us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" xlink:title="NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="loc_us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" xlink:title="Definition : loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward to loc_us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" xlink:type="arc" use="optional" order="90" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinorityInterestDecreaseFromRedemptions" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromRedemptions" xlink:title="MinorityInterestDecreaseFromRedemptions" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromRedemptions" xlink:title="Definition : loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward to loc_us-gaap_MinorityInterestDecreaseFromRedemptions" xlink:type="arc" use="optional" order="100" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:title="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:title="Definition : loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward to loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="arc" use="optional" order="110" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharesIssued" xlink:label="loc_us-gaap_SharesIssued" xlink:title="SharesIssued" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="loc_us-gaap_SharesIssued" xlink:title="Definition : loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward to loc_us-gaap_SharesIssued" xlink:type="arc" use="optional" order="120" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockMember" xlink:label="loc_us-gaap_PreferredStockMember" xlink:title="PreferredStockMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember" xlink:to="loc_us-gaap_PreferredStockMember" xlink:title="Definition : loc_us-gaap_ParentMember to loc_us-gaap_PreferredStockMember" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquityOther" xlink:label="loc_us-gaap_StockholdersEquityOther" xlink:title="StockholdersEquityOther" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="loc_us-gaap_StockholdersEquityOther" xlink:title="Definition : loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward to loc_us-gaap_StockholdersEquityOther" xlink:type="arc" use="optional" order="8000" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockRedeemedOrCalledDuringPeriodValue" xlink:label="loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue" xlink:title="StockRedeemedOrCalledDuringPeriodValue" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockRedeemedOrCalledDuringPeriodShares" xlink:label="loc_us-gaap_StockRedeemedOrCalledDuringPeriodShares" xlink:title="StockRedeemedOrCalledDuringPeriodShares" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue" xlink:to="loc_us-gaap_StockRedeemedOrCalledDuringPeriodShares" xlink:title="Definition : loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue to loc_us-gaap_StockRedeemedOrCalledDuringPeriodShares" xlink:type="arc" use="optional" order="8000" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue" xlink:title="Definition : loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward to loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue" xlink:type="arc" use="optional" order="8010" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DividendsPreferredStockCash" xlink:label="loc_us-gaap_DividendsPreferredStockCash" xlink:title="DividendsPreferredStockCash" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="loc_us-gaap_DividendsPreferredStockCash" xlink:title="Definition : loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward to loc_us-gaap_DividendsPreferredStockCash" xlink:type="arc" use="optional" order="8020" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination" xlink:label="loc_us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination" xlink:title="NoncontrollingInterestIncreaseFromBusinessCombination" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="loc_us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination" xlink:title="Definition : loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward to loc_us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination" xlink:type="arc" use="optional" order="8030" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.hcpi.com/role/BalanceSheetParenthetical">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems" xlink:title="StatementLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable" xlink:title="StatementTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems" xlink:to="loc_us-gaap_StatementTable" xlink:title="Definition : loc_us-gaap_StatementLineItems to loc_us-gaap_StatementTable" xlink:type="arc" use="optional" order="10" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis" xlink:title="LegalEntityAxis" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain" xlink:title="EntityDomain" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis" xlink:to="loc_dei_EntityDomain" xlink:title="Definition : loc_dei_LegalEntityAxis to loc_dei_EntityDomain" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:title="VariableInterestEntityPrimaryBeneficiaryMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:title="Definition : loc_dei_EntityDomain to loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:type="arc" use="optional" order="10" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable" xlink:to="loc_dei_LegalEntityAxis" xlink:title="Definition : loc_us-gaap_StatementTable to loc_dei_LegalEntityAxis" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain_1" xlink:title="EntityDomain_1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis" xlink:to="EntityDomain_1" xlink:title="Definition : loc_dei_LegalEntityAxis to loc_dei_EntityDomain" xlink:type="arc" use="optional" order="20" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherAssets" xlink:label="loc_us-gaap_OtherAssets" xlink:title="OtherAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems" xlink:to="loc_us-gaap_OtherAssets" xlink:title="Definition : loc_us-gaap_StatementLineItems to loc_us-gaap_OtherAssets" xlink:type="arc" use="optional" order="20" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:title="AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:title="Definition : loc_us-gaap_StatementLineItems to loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:type="arc" use="optional" order="30" />
  </link:definitionLink>
</link:linkbase>


