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  <xs:element id="hr_ImpairmentChargeOnRealEstateAssetsHeldForSale" abstract="false" name="ImpairmentChargeOnRealEstateAssetsHeldForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_LessorOperatingLeasePaymenttobeReceivedafterYearFour" abstract="false" name="LessorOperatingLeasePaymenttobeReceivedafterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_NumberOfSalesTypeLeasesExcluded" abstract="false" name="NumberOfSalesTypeLeasesExcluded" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hr_SquareFeetSubjecttoGroundLeases" abstract="false" name="SquareFeetSubjecttoGroundLeases" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:areaItemType"/>
  <xs:element id="hr_NumberofGroundLeasesPrepaid" abstract="false" name="NumberofGroundLeasesPrepaid" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hr_AmortizationofPrepaidRent" abstract="false" name="AmortizationofPrepaidRent" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_NumberofGroundLeasesExcludingPrepaidLeases" abstract="false" name="NumberofGroundLeasesExcludingPrepaidLeases" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hr_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_FinanceLeaseLiabilityToBePaidAfterYearFour" abstract="false" name="FinanceLeaseLiabilityToBePaidAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_OperatingLeaseOtherAbstract" abstract="true" name="OperatingLeaseOtherAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hr_FinanceLeasePrincipalOnlyPayments" abstract="false" name="FinanceLeasePrincipalOnlyPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_CommercialPaperProgramMember" abstract="true" name="CommercialPaperProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_TermLoanDue2027Member" abstract="true" name="TermLoanDue2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_TermLoanDue2028Member" abstract="true" name="TermLoanDue2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_SeniorNotesDue2026Member" abstract="true" name="SeniorNotesDue2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_SeniorNotesDue2027Member" abstract="true" name="SeniorNotesDue2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_SeniorNotesdue2028Member" abstract="true" name="SeniorNotesdue2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_SeniorNotesDue2030NetOfDiscountAndIssuanceCostsMember" abstract="true" name="SeniorNotesDue2030NetOfDiscountAndIssuanceCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_SeniorNotesdue2030Member" abstract="true" name="SeniorNotesdue2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_SeniorNotesDue2031Member" abstract="true" name="SeniorNotesDue2031Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_SeniorNotesDue2031NetOfDiscountAndIssuanceCostsMember" abstract="true" name="SeniorNotesDue2031NetOfDiscountAndIssuanceCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_SeniorNotesDue2032Member" abstract="true" name="SeniorNotesDue2032Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_MortgageNotesPayableNetMember" abstract="true" name="MortgageNotesPayableNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_A2032ExchangeableSeniorNotesMember" abstract="true" name="A2032ExchangeableSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_A2032NotesCappedCallsMember" abstract="true" name="A2032NotesCappedCallsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_TermLoanMember" abstract="true" name="TermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_DebtInstrumentAdditionalAggregatePrincipalAmount" abstract="false" name="DebtInstrumentAdditionalAggregatePrincipalAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_CommonStockPerShareRegularQuarterlyDistribution" abstract="false" name="CommonStockPerShareRegularQuarterlyDistribution" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="hr_DebtInstrumentConvertibleCappedCallTransactionInitialStrikePrice" abstract="false" name="DebtInstrumentConvertibleCappedCallTransactionInitialStrikePrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="hr_DebtInstrumentConvertibleCappedCallTransactionInitialCapPrice" abstract="false" name="DebtInstrumentConvertibleCappedCallTransactionInitialCapPrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="hr_AdjustmentsToAdditionalPaidInCapitalPurchasesOfCappedCallsRelatedToConvertibleDebt" abstract="false" name="AdjustmentsToAdditionalPaidInCapitalPurchasesOfCappedCallsRelatedToConvertibleDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_LineOfCreditFacilityIncreasePeriodicallyBorrowingCapacity" abstract="false" name="LineOfCreditFacilityIncreasePeriodicallyBorrowingCapacity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_LineOfCreditFacilityBaseRateFloor" abstract="false" name="LineOfCreditFacilityBaseRateFloor" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hr_LineOfCreditFacilityInterestRateFloor" abstract="false" name="LineOfCreditFacilityInterestRateFloor" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hr_LineOfCreditFacilityApplicableMarginMin" abstract="false" name="LineOfCreditFacilityApplicableMarginMin" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hr_LineOfCreditFacilityApplicableMarginMax" abstract="false" name="LineOfCreditFacilityApplicableMarginMax" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hr_InterestRateSwapsMaturingIn2026And2027Member" abstract="true" name="InterestRateSwapsMaturingIn2026And2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_InterestRateSwapsMaturingIn2029Member" abstract="true" name="InterestRateSwapsMaturingIn2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_DerivativeStrikePrice" abstract="false" name="DerivativeStrikePrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="hr_InterestRateSwap2019Member" abstract="true" name="InterestRateSwap2019Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_InterestRateSwap2022Member" abstract="true" name="InterestRateSwap2022Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_InterestRateSwaps2026Member" abstract="true" name="InterestRateSwaps2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_DerivativeAssetLiabilitySubjectToMasterNettingArrangementBeforeOffset" abstract="false" name="DerivativeAssetLiabilitySubjectToMasterNettingArrangementBeforeOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_ReconciliationOfBeginningAndEndingCommonStockOutstandingRollForward" abstract="true" name="ReconciliationOfBeginningAndEndingCommonStockOutstandingRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hr_OperatingPartnershipPerformanceUnitsMember" abstract="true" name="OperatingPartnershipPerformanceUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_NonVestedStockAwardMember" abstract="true" name="NonVestedStockAwardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_ExecutiveIncentiveProgram1Member" abstract="true" name="ExecutiveIncentiveProgram1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_LTIPSeriesCUnitsMember" abstract="true" name="LTIPSeriesCUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_StockIssuanceProgramAxis" abstract="true" name="StockIssuanceProgramAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="hr_StockIssuanceProgramDomain" abstract="true" name="StockIssuanceProgramDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_MarketCondition2Member" abstract="true" name="MarketCondition2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedInPeriodTotalFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedInPeriodTotalFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardPerformancePeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardPerformancePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="hr_IncrementalCommonSharesAttributableToDilutiveEffectOfOPUnits" abstract="false" name="IncrementalCommonSharesAttributableToDilutiveEffectOfOPUnits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="hr_NetIncomeLossfromContinuingOperationsAvailabletoCommonStockholdersBasic" abstract="false" name="NetIncomeLossfromContinuingOperationsAvailabletoCommonStockholdersBasic" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_NetIncomeLossFromContinuingOperationsAvailableToCommonStockholdersDiluted" abstract="false" name="NetIncomeLossFromContinuingOperationsAvailableToCommonStockholdersDiluted" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedStockPrice" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedStockPrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="hr_StockIncentivePlanMember" abstract="true" name="StockIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceAssessmentAdjustments" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceAssessmentAdjustments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="hr_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedRemainderOfFiscalYear" abstract="false" name="EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedRemainderOfFiscalYear" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedNextTwelveMonths" abstract="false" name="EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedNextTwelveMonths" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_EmployeeServiceShareBasedCompensationNonVestedAwardsCompensationCostNotYetRecognizedYearTwo" abstract="false" name="EmployeeServiceShareBasedCompensationNonVestedAwardsCompensationCostNotYetRecognizedYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_EmployeeServiceShareBasedCompensationNonVestedAwardsCompensationCostNotYetRecognizedYearThree" abstract="false" name="EmployeeServiceShareBasedCompensationNonVestedAwardsCompensationCostNotYetRecognizedYearThree" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_EmployeeServiceShareBasedCompensationNonVestedAwardsCompensationCostNotYetRecognizedAfterYearFour" abstract="false" name="EmployeeServiceShareBasedCompensationNonVestedAwardsCompensationCostNotYetRecognizedAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_MedialOutpatientPropertiesSegmentMember" abstract="true" name="MedialOutpatientPropertiesSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_PropertyTaxesMember" abstract="true" name="PropertyTaxesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_PersonnelMember" abstract="true" name="PersonnelMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hr_PropertyTaxes" abstract="false" name="PropertyTaxes" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hr_PersonnelExpense" abstract="false" name="PersonnelExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
