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      </PledgesAndGrantsReceivableGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>1713565</BOYAmt>
        <EOYAmt>1730030</EOYAmt>
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        <BOYAmt>1329613</BOYAmt>
        <EOYAmt>1433875</EOYAmt>
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      <OtherAssetsTotalGrp>
        <BOYAmt>2764</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>3073730</BOYAmt>
        <EOYAmt>4452653</EOYAmt>
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      <AccountsPayableAccrExpnssGrp>
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        <EOYAmt>153009</EOYAmt>
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      <TotalLiabilitiesGrp>
        <BOYAmt>17000</BOYAmt>
        <EOYAmt>153009</EOYAmt>
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      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
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        <BOYAmt>2981007</BOYAmt>
        <EOYAmt>3121483</EOYAmt>
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      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>75723</BOYAmt>
        <EOYAmt>1178161</EOYAmt>
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      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>3056730</BOYAmt>
        <EOYAmt>4299644</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>3073730</BOYAmt>
        <EOYAmt>4452653</EOYAmt>
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      <ReconcilationRevenueExpnssAmt>1218429</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>24485</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <ConsolAndSepBasisFinclStmtInd>X</ConsolAndSepBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
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    <IRS990ScheduleA documentId="RetDoc1039100001">
      <SupportingOrganization509a3Ind>X</SupportingOrganization509a3Ind>
      <SupportingOrgType1Ind>X</SupportingOrgType1Ind>
      <SupportedOrganizationsCnt>1</SupportedOrganizationsCnt>
      <SupportedOrgInformationGrp>
        <SupportedOrganizationName>
          <BusinessNameLine1Txt>MASSACHUSETTS MEDICAL SOCIETY</BusinessNameLine1Txt>
        </SupportedOrganizationName>
        <EIN>042050773</EIN>
        <OrganizationTypeCd>6</OrganizationTypeCd>
        <GoverningDocumentListedInd>1</GoverningDocumentListedInd>
        <SupportAmt>257408</SupportAmt>
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      <SupportedOrganizationsTotalCnt>1</SupportedOrganizationsTotalCnt>
      <SupportSumAmt>257408</SupportSumAmt>
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      <Form990SchASupportingOrgGrp>
        <ListedByNameGoverningDocInd>1</ListedByNameGoverningDocInd>
        <SuprtOrgNoIRSDeterminationInd>0</SuprtOrgNoIRSDeterminationInd>
        <SupportedOrgSectionC456Ind>1</SupportedOrgSectionC456Ind>
        <SupportedOrgQualifiedInd>1</SupportedOrgQualifiedInd>
        <SuprtExclusivelySec170c2BInd>1</SuprtExclusivelySec170c2BInd>
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        <OrganizationChangeSuprtOrgInd>0</OrganizationChangeSuprtOrgInd>
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        <DisqualifiedPrsnControllIntInd>0</DisqualifiedPrsnControllIntInd>
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        <ContributionFamilyInd>0</ContributionFamilyInd>
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      <Form990SchAType1SuprtOrgGrp>
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      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>PART IV, SECTION A, LINE 3(B)</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION RECEIVED A COPY OF THE MASACHUSETTS MEDICAL SOCIETY'S IRS DETERMINATION LETTER CONFIRMING EXEMPTION UNDER INTERNAL REVENUE CODE SECTION 501(C)(6). IN ADDITION IT RECEIVED SUPPORT FROM THE MASSACHUSETTS MEDICAL SOCIETY IN THE FORM OF A PRO FORMA SCHEDULE A,PART III REFLECTING THE SATISFACTION OF THE SECTION 509(A)(2) PUBLIC SUPPORT TEST.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>PART IV, SECTION A, LINE 3(C)</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOUNDATION HAS A FISCAL SPONSORSHIP AGREEMENT IN PLACE FOR EACH GRANT RECEIVED ON BEHALF OF MMS. THE AGREEMENT STATES THE FOLLOWING: THE PROJECT FURTHERS THE CHARITABLE PURPOSES OF THE FOUNDATION. THE FOUNDATION SHALL RETAIN FULL DISCRETION AND CONTROL OVER THE USE OF SUCH FUNDS TO ACCOMPLISH THE CHARITABLE PURPOSES OF THE PROJECT. THE FOUNDATION'S EXECUTIVE DIRECTOR WILL MONITOR THE EXPENDITURE OF THE FOUNDATION FUNDS BY THE PROJECT TO ENSURE ADHERENCE TO THE APPROVED BUDGET AND APPLICABLE REPORTING REQUIREMENTS. THE RELEASE OF FUNDS WILL BE APPROVED ONLY WHEN PREVIOUS ADVANCES HAVE BEEN PROPERLY ACCOUNTED FOR.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>PART IV, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOUNDATION IS A MECHANISM FOR CONSOLIDATING THE MMS CHARITABLE GIVING INTO ONE ENTITY. IT SUPPORTS THE CHARITABLE ACTIVITIES OF THE MASSACHUSETTS MEDICAL SOCIETY BY DONATING TO UNRELATED ORGANIZATIONS THAT AIM TO AFFECT THE HEALTH, BENEFIT, AND WELFARE OF THE COMMUNITY.</ExplanationTxt>
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    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1234500001">
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        <ContributorNum>RESTRICTED</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
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        <BeginningYearBalanceAmt>1329613</BeginningYearBalanceAmt>
        <ContributionsAmt>75723</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>110835</InvestmentEarningsOrLossesAmt>
        <AdministrativeExpensesAmt>4912</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>1433875</EndYearBalanceAmt>
      </CYEndwmtFundGrp>
      <CYMinus1YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>1219340</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>162007</InvestmentEarningsOrLossesAmt>
        <AdministrativeExpensesAmt>51734</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>1329613</EndYearBalanceAmt>
      </CYMinus1YrEndwmtFundGrp>
      <CYMinus2YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>1209137</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>14530</InvestmentEarningsOrLossesAmt>
        <AdministrativeExpensesAmt>4327</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>1219340</EndYearBalanceAmt>
      </CYMinus2YrEndwmtFundGrp>
      <CYMinus3YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>1308579</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>-91754</InvestmentEarningsOrLossesAmt>
        <AdministrativeExpensesAmt>7688</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>1209137</EndYearBalanceAmt>
      </CYMinus3YrEndwmtFundGrp>
      <CYMinus4YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>1012897</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>302913</InvestmentEarningsOrLossesAmt>
        <AdministrativeExpensesAmt>7231</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>1308579</EndYearBalanceAmt>
      </CYMinus4YrEndwmtFundGrp>
      <BoardDesignatedBalanceEOYPct>0.95000</BoardDesignatedBalanceEOYPct>
      <PrmnntEndowmentBalanceEOYPct>0.04000</PrmnntEndowmentBalanceEOYPct>
      <TermEndowmentBalanceEOYPct>0.01000</TermEndowmentBalanceEOYPct>
      <EndowmentsHeldUnrelatedOrgInd>0</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>1</EndowmentsHeldRelatedOrgInd>
      <RelatedOrgListSchRInd>1</RelatedOrgListSchRInd>
      <TotalBookValueLandBuildingsAmt>0</TotalBookValueLandBuildingsAmt>
      <OtherSecuritiesGrp>
        <Desc>BENEFICIAL INTEREST IN MMS INVESTMENT POOL</Desc>
        <BookValueAmt>1433875</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
      <TotalBookValueSecuritiesAmt>1433875</TotalBookValueSecuritiesAmt>
      <TotalRevEtcAuditedFinclStmtAmt>1777303</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>24485</NetUnrealizedGainsInvstAmt>
      <DonatedServicesAndUseFcltsAmt>139835</DonatedServicesAndUseFcltsAmt>
      <RevenueNotReportedAmt>164320</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>1612983</RevenueSubtotalAmt>
      <OtherRevenuesNotIncludedAmt>4912</OtherRevenuesNotIncludedAmt>
      <RevenueNotReportedFinclStmtAmt>4912</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>1617895</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>534388</TotExpnsEtcAuditedFinclStmtAmt>
      <DonatedServicesUseFcltsAmt>139835</DonatedServicesUseFcltsAmt>
      <ExpensesNotReportedAmt>139835</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>394553</ExpensesSubtotalAmt>
      <OtherExpensesNotIncludedAmt>4912</OtherExpensesNotIncludedAmt>
      <ExpensesNotRptFinclStmtAmt>4912</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>399465</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CHARITABLE FOUNDATION INTENDS TO USE ITS ENDOWMENT FUND FOR LONG-TERM FINANCIAL GROWTH AS WELL AS TO SUPPLEMENT ANNUAL CHARITABLE GIVING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI, LINE 4B - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>INVESTMENT EXPENSES (OFFSET INVEST. INCOME ON AUDITED FS) 4,912.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 4B - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>INVESTMENT EXPENSES (OFFSET INVEST. INCOME ON AUDITED FS) 4,912.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 1B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE $75,723 REPORTED ON PART V, LINE 1B, COLUMN (A) REPRESENTS AN PREVIOUSLY EXISTING ENDOWMENT FUND THAT WAS INADVERTENTLY EXCLUDED FROM THE ENDOWMENT BALANCES IN COLUMNS (B) THROUGH (D).</ExplanationTxt>
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    </IRS990ScheduleD>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>CHANGE (ST ANNE'S FREE MEDICAL PROGRAM)</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>5 RAWSON PL</AddressLine1Txt>
          <CityNm>SHREWSBURY</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01545</ZIPCd>
        </USAddress>
        <RecipientEIN>222905331</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>20000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>QUALITY HEALTH CARE SERVICES FOR UNINSURED AND UNDERINSURED</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>GRATIS HEALTHCARE</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>10 PEARL STREET</AddressLine1Txt>
          <CityNm>FRAMINGHAM</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02038</ZIPCd>
        </USAddress>
        <RecipientEIN>863883420</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>15000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>QUALITY HEALTH CARE SERVICES FOR UNINSURED AND UNDERINSURED</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>ADDICTION REFERRAL CENTER</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>33 MAIN STREET</AddressLine1Txt>
          <CityNm>MARLBOROUGH</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01752</ZIPCd>
        </USAddress>
        <RecipientEIN>521334719</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>15000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>ADDICTION SERVICES</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>WORCESTER FREE CARE COLLABORATIVE INC (EPWORTH FREE MEDICAL PROGRAM)</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>90 MAIN STREET</AddressLine1Txt>
          <CityNm>WORCESTER</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01608</ZIPCd>
        </USAddress>
        <RecipientEIN>920979304</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>15000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>QUALITY HEALTH CARE SERVICES FOR UNINSURED AND UNDERINSURED</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>ADDICTION SOLUTIONS OF NANTUCKET</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>57 PROSPECT STREET UNIT 1</AddressLine1Txt>
          <CityNm>NANTUCKET</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02554</ZIPCd>
        </USAddress>
        <RecipientEIN>812120185</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>10000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>ADDICTION SERVICES</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>WORCESTER RISE FOR HEALTH</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>18 CHESTNUT STREET SUITE 230</AddressLine1Txt>
          <CityNm>WORCESTER</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01608</ZIPCd>
        </USAddress>
        <RecipientEIN>931505125</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>10000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>ADDRESSING SOCIAL DETERMINANTS OF HEALTH</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>BOSTON UNIVERSITY OUTREACH VAN PROJECT (TRUSTEES OF BOSTON UNIVERSITY)</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>330 S CAMPUS AVE</AddressLine1Txt>
          <CityNm>OXFORD</CityNm>
          <StateAbbreviationCd>OH</StateAbbreviationCd>
          <ZIPCd>45056</ZIPCd>
        </USAddress>
        <RecipientEIN>042103547</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>10000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>QUALITY HEALTHCARE AND BASIC NECESSITIES TO UNDERSERVED COMMUNITIES</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>MARTIN LUTHER KING JR FAMILY SERVICES</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>3 RUTLAND STREET PO BOX 91026</AddressLine1Txt>
          <CityNm>SPRINGFIELD</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01109</ZIPCd>
        </USAddress>
        <RecipientEIN>042647035</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>1420</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>NUTRITION EDUCATION AND RESOURCES FOR THE FOOD JUSTICE FAIR</PurposeOfGrantTxt>
      </RecipientTable>
      <Total501c3OrgCnt>8</Total501c3OrgCnt>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>INTERNATIONAL HEALTH STUDIES GRANT</GrantTypeTxt>
        <RecipientCnt>17</RecipientCnt>
        <CashGrantAmt>14500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ULTIMATE RECIPIENTS OF GRANTS ARE REQUIRED TO COMPLY WITH THE CONDITIONS SET FORTH BY THE FOUNDATION. THIS INCLUDES FINANCIAL UPDATES ON THE FUNDING FOR THE SPECIAL PROJECT AS THEY OCCUR AND A FINAL REPORT ON THE EXPENDITURES OF THE GRANT NO LATER THAN ONE YEAR FROM THE DATE OF ACCEPTANCE, INCLUDING A NARRATIVE OF THE GRANT PROJECT ADDRESSING THE GOALS STATED IN THE PROPOSAL. WRITTEN PROGRESS REPORTS ON THE ACTIVITIES OF THE PROJECT ARE ALSO REQUIRED.</ExplanationTxt>
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      <InitialContractExceptionInd>0</InitialContractExceptionInd>
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        <PersonNm>LOIS DEHLS CORNELL</PersonNm>
        <TitleTxt>MMS EXECUTIVE VICE PRESIDENT</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>574594</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>84101</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>28073</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>34500</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>32704</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>753972</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
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    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART III, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>DURING THE YEAR ENDED MAY 31, 2025, THE FOUNDATION BEGAN SERVING AS A FISCAL SPONSOR FOR MASSACHUSETTS MEDICAL SOCIETY (MMS), ITS SUPPORTED 501(C)(6) ORGANIZATION, UNDER PRE-APPROVED GRANT RELATIONSHIPS. THROUGH THIS PROGRAM, THE FOUNDATION RECEIVES AND ADMINISTERS GRANT FUNDS FROM THIRD-PARTY GRANTORS AND DISBURSES THEM FOR MISSION-RELATED PROJECTS CONDUCTED BY MMS. THIS ACTIVITY IS CONSISTENT WITH THE FOUNDATION'S CHARITABLE AND EDUCATIONAL PURPOSES AND REPRESENTS A NEW PROGRAM SERVICE DISTINCT FROM PRIOR GRANTMAKING ACTIVITIES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE PRESIDENT OF THE MASSACHUSETTS MEDICAL SOCIETY (MMS), SUBJECT TO APPROVAL BY THE MMS BOARD OF TRUSTEES, MAY FILL ANY VACANCIES EXISTING IN THE FOUNDATION'S BOARD OF DIRECTORS AT ANY TIME. IN ADDITION THE PRESIDENT OF THE MASSACHUSETTS MEDICAL SOCIETY, SUBJECT TO APPROVAL BY THE MMS BOARD OF TRUSTEES, MAY APPOINT ADDITIONAL DIRECTORS TO AND REMOVAL FROM THE FOUNDATIONS BOARD.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FORM 990 IS PROVIDED TO THE BOARD OF DIRECTORS PRIOR TO FILING THE FORM. THE RETURN IS PRESENTED BY THE PREPARER AT A SUMMARY LEVEL TO THE BOARD WITH THE OPPORTUNITY FOR QUESTIONS AND COMMENTS BY THE BOARD.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>AT THE FIRST MEETING OF THE FISCAL YEAR OR DIRECTLY AFTER THE MEETING, BOARD MEMBERS SUBMIT SIGNED CONFLICT OF INTEREST STATEMENTS. THE ORGANIZATION'S POLICY STATEMENT ON CONFLICT OF INTEREST REQUIRE DIRECTORS TO PROMPTLY DISCLOSE ANY CONFLICTS REQUIRED TO BE DISCLOSED UNDER THE POLICY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>15A. THE FOUNDATION DOES NOT COMPENSATE ITS OFFICERS. 15B. THE FOUNDATION IS SUBJECT TO THE WHISTLE-BLOWER AND RETENTION AND DESTRUCTION POLICY OF THE MASSACHUSETTS MEDICAL SOCIETY, ITS PARENT ORGANIZATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOUNDATION MAKES ITS GOVERNING DOCUMENTS AND FINANCIAL STATEMENTS AVAILABLE TO THE GENERAL PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SUBSEQUENT EVENT - MERGER ACTIVITY</FormAndLineReferenceDesc>
        <ExplanationTxt>EFFECTIVE JUNE 1, 2025, IMMEDIATELY FOLLOWING THE CLOSE OF THE FISCAL YEAR, THE MASSACHUSETTS MEDICAL SOCIETY CHARITABLE AND EDUCATIONAL FUND ("C&amp;E FUND"), A 501(C)(3) UNINCORPORATED ASSOCIATION, MERGED INTO THE MASSACHUSETTS MEDICAL SOCIETY AND ALLIANCE CHARITABLE FOUNDATION ("MACF"), ALSO A 501(C)(3) UNINCORPORATED ASSOCIATION. PRIOR TO THE MERGER, C&amp;E FUND AND MACF WERE RELATED ORGANIZATIONS UNDER COMMON CONTROL OF THE MASSACHUSETTS MEDICAL SOCIETY. AS A RESULT OF THE MERGER, ALL ASSETS AND LIABILITIES OF C&amp;E FUND WERE TRANSFERRED TO AND ASSUMED BY MACF, AND C&amp;E FUND CEASED TO EXIST AS A SEPARATE LEGAL ENTITY. THE C&amp;E FUND'S FORM 990 REPORTS ZERO ASSETS AND ZERO LIABILITIES AS OF MAY 31, 2025 TO REFLECT THE CESSATION OF THE ENTITY. HOWEVER, BECAUSE THE MERGER BECAME LEGALLY EFFECTIVE ON JUNE 1, 2025, THE ASSETS AND LIABILITIES OF C&amp;E FUND ARE NOT REFLECTED IN MACF'S FORM 990 AS OF MAY 31, 2025.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043400001">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>MASSACHUSETTS MEDICAL SOCIETY</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>860 WINTER STREET</AddressLine1Txt>
          <CityNm>WALTHAM</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02451</ZIPCd>
        </USAddress>
        <EIN>042050773</EIN>
        <PrimaryActivitiesTxt>PROMOTE MA MEDICINE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(6)</ExemptCodeSectionTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
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          <BusinessNameLine1Txt>MASSACHUSETTS MEDICAL SOCIETY CHARITABLE &amp; EDUCATIONAL FUND</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>860 WINTER STREET</AddressLine1Txt>
          <CityNm>WALTHAM</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02451</ZIPCd>
        </USAddress>
        <EIN>046075905</EIN>
        <PrimaryActivitiesTxt>MEDICAL STUDENT LOANS</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 12B, II</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>MASSACHUSETTS MEDICAL SOCIETY</BusinessNameLine1Txt>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>PHYSICIAN HEALTH SERVICES INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>860 WINTER STREET</AddressLine1Txt>
          <CityNm>WALTHAM</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02451</ZIPCd>
        </USAddress>
        <EIN>223234975</EIN>
        <PrimaryActivitiesTxt>OUTREACH SERVICES</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 12B, II</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>MASSACHUSETTS MEDICAL SOCIETY</BusinessNameLine1Txt>
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      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>PHYSICIANS INSURANCE AGENCY</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>860 WINTER STREET</AddressLine1Txt>
          <CityNm>WALTHAM</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02451</ZIPCd>
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        <EIN>043135954</EIN>
        <PrimaryActivitiesTxt>INSURANCE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>0</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>1</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>0</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>1</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>1</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>1</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>1</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>1</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>0</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>1</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>THE MASSACHUSETTS MEDICAL SOCIETY</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>B</TransactionTypeTxt>
        <InvolvedAmt>257408</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>THE MASSACHUSETTS MEDICAL SOCIETY</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>M</TransactionTypeTxt>
        <InvolvedAmt>139835</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST ALLOCATION</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
    </IRS990ScheduleR>
  </ReturnData>
</Return>