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      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
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        <ConsolidatedBasisFinclStmtInd>X</ConsolidatedBasisFinclStmtInd>
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      <AuditCommitteeInd>true</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
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      <BuildingsGrp />
      <LeaseholdImprovementsGrp />
      <EquipmentGrp />
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      <FootnoteTextInd>X</FootnoteTextInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D, PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ENDOWMENT FUNCTIONS TO SUPPORT THE MISSION OF THE MASSACHUSETTS EYE AND EAR INFIRMARY TO PROVIDE SUPERIOR PATIENT CARE AND RESEARCH. THE INCOME FROM THE ENDOWMENT FUNDS ARE SUBJECT TO DONOR-IMPOSED STIPULATIONS USUALLY FOR RESEARCH, EDUCATION AND PATIENT CARE.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D, PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOUNDATION OF THE MASSACHUSETTS EYE AND EAR INFIRMARY, INC. ("THE FOUNDATION") WAS INCLUDED IN CONSOLIDATED FINANCIAL STATEMENTS WITH ITS AFFILIATED ORGANIZATIONS. THE INCOME TAX FOOTNOTE IS AS FOLLOWS : THE FOUNDATION AND ITS AFFILIATES QUALIFY AS TAX-EXEMPT ORGANIZATIONS UNDER THE INTERNAL REVENUE CODE. THE FOUNDATION, INFIRMARY, ASSOCIATES, SCHEPENS AND EMBANKMENT ARE TAX-EXEMPT UNDER SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE AND CIRCLE IS TAX-EXEMPT UNDER 501(C)(25) OF THE INTERNAL REVENUE CODE. ACCORDINGLY, NO PROVISION FOR INCOME TAXES HAS BEEN MADE IN THE ACCOMPANYING FINANCIAL STATEMENTS. MANAGEMENT HAS EVALUATED ACCOUNTING FOR UNCERTAINTY IN INCOME TAXES AND THERE WAS NO IMPACT TO THE FOUNDATION'S FINANCIAL STATEMENTS FOR THE YEAR ENDED SEPTEMBER 30, 2018.</ExplanationTxt>
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      <AccountActivitiesOutsideUSGrp>
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      <AccountActivitiesOutsideUSGrp>
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Europe (Including Iceland and Greenland)</RegionTxt>
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Central America and the Caribbean</RegionTxt>
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>East Asia and the Pacific</RegionTxt>
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        <ExplanationTxt>and records.</ExplanationTxt>
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          <AddressLine1Txt>243 CHARLES STREET</AddressLine1Txt>
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      <RecipientTable>
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          <BusinessNameLine1Txt>SCHEPENS EYE RESEARCH INSTITUTE INC</BusinessNameLine1Txt>
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          <AddressLine1Txt>20 STANIFORD STREET</AddressLine1Txt>
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          <ZIPCd>02114</ZIPCd>
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        <NonCashAssistanceDesc>N/A</NonCashAssistanceDesc>
        <PurposeOfGrantTxt>TFR FOR SPECIFIC USES</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>HARVARD UNIVERSITY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1033 Massachusetts Ave</AddressLine1Txt>
          <CityNm>Cambridge</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02138</ZIPCd>
        </USAddress>
        <RecipientEIN>042103580</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>102450</CashGrantAmt>
        <ValuationMethodUsedDesc>FMV</ValuationMethodUsedDesc>
        <NonCashAssistanceDesc>N/A</NonCashAssistanceDesc>
        <PurposeOfGrantTxt>SPEECH AND HEARING</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
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          <BusinessNameLine1Txt>NEW ENGLAND EYE CENTER</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>800 Washington Street</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02111</ZIPCd>
        </USAddress>
        <RecipientEIN>043400617</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>20383</CashGrantAmt>
        <ValuationMethodUsedDesc>FMV</ValuationMethodUsedDesc>
        <NonCashAssistanceDesc>N/A</NonCashAssistanceDesc>
        <PurposeOfGrantTxt>CORNEA RESEARCH</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>MASS LIONS RESEARCH LAB AT BU</BusinessNameLine1Txt>
        </RecipientBusinessName>
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          <AddressLine1Txt>88 East Concord Street</AddressLine1Txt>
          <CityNm>Boston</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02118</ZIPCd>
        </USAddress>
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        <CashGrantAmt>20383</CashGrantAmt>
        <ValuationMethodUsedDesc>FMV</ValuationMethodUsedDesc>
        <NonCashAssistanceDesc>N/A</NonCashAssistanceDesc>
        <PurposeOfGrantTxt>CORNEA RESEARCH</PurposeOfGrantTxt>
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        <FormAndLineReferenceDesc>SCHEDULE I, PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOUNDATION IS THE PARENT OF THE INFIRMARY, SCHEPENS EYE RESEARCH INSTITUTE AND THE MASSACHUSETTS EYE AND EAR ASSOCIATES (THE "ASSOCIATES"), A RELATED GROUP OF TAX-EXEMPT ENTITIES. TRANSFERS ARE MADE BETWEEN THESE GROUPS TO CARRY OUT THE MISSION THEY ARE DEDICATED TO: PATIENT CARE, RESEARCH AND TEACHING. THE BOARD OF DIRECTORS, MANAGEMENT TEAMS, MEDICAL DOCTORS, AND EMPLOYEES, WORK CLOSELY TO MONITOR AND ENSURE THAT THE POLICIES AND PROCEDURES IN PLACE WITH RESPECT TO THESE TRANSFERS ARE BEING CARRIED OUT TO FURTHER THE CHARITABLE CAUSE OF ALL ENTITIES.</ExplanationTxt>
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      <InitialContractExceptionInd>false</InitialContractExceptionInd>
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        <PersonNm>CAROLANN WILLIAMS</PersonNm>
        <TitleTxt>CFO &amp; VP FINANCE AND ADMIN</TitleTxt>
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        <PersonNm>D BRADLEY WELLING MD</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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        <PersonNm>JOAN W MILLER MD</PersonNm>
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        <PersonNm>JOHN R FERNANDEZ</PersonNm>
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        <PersonNm>MARTHA PYLE FARRELL</PersonNm>
        <TitleTxt>ASSISTANT SECRETARY</TitleTxt>
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        <PersonNm>MAUREEN KELLEY</PersonNm>
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        <PersonNm>KEITH D LILLEMOE MD</PersonNm>
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        <PersonNm>THOMAS SEQUIST MD</PersonNm>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE J, PART I, LINE 3:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOUNDATION OF THE MASSACHUSETTS EYE AND EAR INFIRMARY, INC. ("THE FOUNDATION") DOES NOT HAVE ANY PAID EMPLOYEES. EMPLOYEES OF THE FOUNDATION ARE LEASED FROM THE MASSACHUSETTS EYE AND EAR INFIRMARY ("THE INFIRMARY"), A RELATED ORGANIZATION. THE INFIRMARY USED A COMPENSATION COMMITTEE, COMPENSATION SURVEY, APPROVAL BY THE BOARD, AND AN INDEPENDENT COMPENSATION CONSULTANT TO ESTABLISH THE COMPENSATION OF THE PRESIDENT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE J, PART I, LINE 4B:</FormAndLineReferenceDesc>
        <ExplanationTxt>CERTAIN INDIVIDUALS PARTICIPATE IN DEFERRED COMPENSATION ARRANGEMENTS WITH MASSACHUSETTS EYE AND EAR. UNDER THIS AGREEMENT, JOHN FERNANDEZ WILL BE CREDITED $200,000 FOR CALENDAR YEAR 2017. JOAN MILLER AND D. BRADLEY WELLING WILL EACH BE CREDITED $100,000 FOR CALENDAR YEAR 2017. EACH ANNUAL CREDIT WILL VEST ON THE FOURTH ANNIVERSARY OF THE DATE SUCH CREDIT WAS MADE OR UPON (1) THE ATTAINMENT OF THE AGE OF 65 WHILE EMPLOYED; (2) TERMINATION WITHOUT CAUSE OR RESIGNATION FOR GOOD REASON; (3) DEATH; (4) DISABILITY; OR (5) CHANGE OF CONTROL OF MASSACHUSETTS EYE AND EAR WITHIN THE MEANING OF SECTION 409A OF THE INTERNAL REVENUE CODE. MR. FERNANDEZ RECEIVED A PAYOUT OF $195,795 FROM HIS DEFERRED COMPENSATION AGREEMENT IN 2017.</ExplanationTxt>
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        <FormAndLineReferenceDesc>SCHEDULE M, PART I, COLUMN (B)</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOUNDATION IS REPORTING THE NUMBER OF CONTRIBUTIONS RECEIVED DURING THE YEAR.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART I, LINE 1 &amp; PART III, LINE 1:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOUNDATION OF THE MASSACHUSETTS EYE AND EAR INFIRMARY, INC. ("THE FOUNDATION") IS ORGANIZED EXCLUSIVELY FOR THE BENEFIT OF AND TO CARRY OUT THE PURPOSE OF THE MASSACHUSETTS EYE AND EAR INFIRMARY, (THE "INFIRMARY") A TAX EXEMPT MEDICAL AND SURGICAL HOSPITAL WHICH PROVIDES PATIENT CARE, RESEARCH AND EDUCATION IN OPHTHALMOLOGY, OTOLARYNGOLOGY AND RELATED SPECIALTIES. THE FOUNDATION RAISES FUNDS, INVESTS FUNDS AND MAKES GRANTS TO THE INFIRMARY. Effective April 1, 2018, the Foundation became part of the comprehensive, integrated healthcare system organized and operated by Partners Healthcare System, Inc, ("Partners") that includes hospitals, physicians, charitable, scientific, educational, research and other Partners affiliated organizations. As part of the system the Foundation will assist and support Partners and the Partners affiliated organizations in fulfilling their mission. PART III, Line 3 Effective April 1, 2018, the Foundation became part of the comprehensive, integrated healthcare system organized and operated by Partners Healthcare System, Inc, ("Partners") that includes hospitals, physicians, charitable, scientific, educational, research and other Partners affiliated organizations. As part of the system the Foundation will assist and support Partners and the Partners affiliated organizations in fulfilling their mission.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, LINE 1A:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOUNDATION'S BYLAWS STATE THE FOLLOWING: THERE SHALL BE AN EXECUTIVE COMMITTEE CONSISTING OF THE CHAIR OF THE BOARD OF DIRECTORS, WHO SHALL CHAIR THE COMMITTEE, THE VICE CHAIR(S) OF THE BOARD OF DIRECTORS, IF ANY, THE SECRETARY, THE TREASURER, THE PRESIDENT OF THE CORPORATION, AND TWO OTHER MEMBERS OF THE BOARD OF DIRECTORS APPOINTED ANNUALLY ON A ROTATING BASIS BY THE BOARD OF DIRECTORS UPON RECOMMENDATION OF THE CHAIR OF THE BOARD OF DIRECTORS. THE EXECUTIVE COMMITTEE SHALL HAVE THE POWER TO TRANSACT ALL EMERGENCY BUSINESS OF THE CORPORATION DURING THE PERIOD BETWEEN THE MEETINGS OF THE BOARD OF DIRECTORS. THE EXECUTIVE COMMITTEE SHALL ALSO TRANSACT SUCH BUSINESS, PERFORM SUCH DUTIES, AND EXERCISE SUCH POWERS AS MAY BE DIRECTED OR DELEGATED BY THE BOARD OF DIRECTORS FROM TIME TO TIME. THE EXECUTIVE COMMITTEE SHALL KEEP A RECORD OF ITS PROCEEDINGS. ALL ACTIONS OF THE EXECUTIVE COMMITTEE SHALL BE REPORTED TO THE BOARD OF DIRECTORS AT ITS NEXT REGULAR MEETING. EFFECTIVE APRIL 1, 2018 THE AMENDED AND RESTATED BYLAWS NO LONGER PROVIDE FOR AN EXECUTIVE COMMITTEE. PART VI, LINE 4 Effective April 1, 2018 the Foundation restated its Articles of Organization to reflect its affiliation with Partners Healthcare System, Inc. ("Partners"). The Foundation's restated Articles of Organizations included: change of its purpose to reflect is affiliation with Partners and support for Partners integrated healthcare delivery system; and change its sole member to reflect that Partners acting through its board of directors shall be the sole member of the Foundation. Effective April 1, 2018 the Foundation amended and restated its bylaws to reflect its affiliation with Partners. The Foundation's restated bylaws included: Change its sole member to reflect that Partners acting through its board of directors shall be the sole member of the Foundation; Outline and provide for the authorities of the sole member including: adoption of the capital and operating budgets for the organization; approval of unbudgeted capital and operating budgets; approval of debt financed transactions; approval of the appointment of independent public accountants; approval of any pledge, sale or other disposition of all or substantially all the property or assets of the corporation; approval of a liquidation, dissolution or other restructuring; and approval of any person to fill the office of President. PART VI, LINE 6 Effective April 1, 2018 the sole member of the corporation is Partners Healthcare System, Inc. PART VI, LINE 7B The sole member effective April 1, 2018 has the authority to: adoption of the capital and operating budgets for the organization; approval of unbudgeted capital and operating budgets; approval of debt financed transactions; approval of the appointment of independent public accountants; approval of any pledge, sale or other disposition of all or substantially all the property or assets of the corporation; approval of a liquidation, dissolution or other restructuring; and approval of any person to fill the office of President.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, LINE 11B:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOUNDATION'S FORM 990 IS PREPARED BY PRICEWATERHOUSECOOPERS, LLP USING INFORMATION PREPARED BY MANAGEMENT. AFTER THE FORM 990 IS COMPLETED, IT IS REVIEWED BY THE MANAGER OF INVESTMENTS AND FOUNDATION ACCOUNTING OF THE FOUNDATION. THE FORM 990 IS THEN PRESENTED TO THE FINANCE COMMITTEE FOR FURTHER REVIEW AND APPROVAL AS AUTHORIZED BY THE BOARD OF DIRECTORS. THE BOARD OF DIRECTORS IS ALSO GIVEN THE FORM 990 FOR REVIEW WITH TIME TO SUBMIT COMMENTS AND QUESTIONS BEFORE FINAL FILING.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, LINE 12C:</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL EMPLOYEES OF THE FOUNDATION ARE LEASED FROM THE INFIRMARY AND COVERED BY THE INFIRMARY CONFLICT OF INTEREST POLICY. MEMBERS OF THE STAFF ARE REQUIRED TO DISCLOSE CONFLICTS OF INTEREST TO THEIR CHIEF OF SERVICE, DEPARTMENT AND DIRECTOR OF LABORATORY/UNIT. MEMBERS OF THE BOARD OF DIRECTORS ARE REQUIRED TO DISCLOSE ANNUALLY, IN WRITING, ANY INTERESTS THAT COULD RISE TO CONFLICTS. THE OFFICE OF THE INTERNAL LEGAL COUNSEL OBTAINS AND REVIEWS THE ANNUAL CONFLICTS OF INTEREST STATEMENTS SUBMITTED BY MEMBERS OF THE BOARD OF DIRECTORS, AND REPORTS ON THE SAME TO THE AUDIT AND COMPLIANCE COMMITTEE OF THE BOARD. WITH RESPECT TO INTERESTS DISCLOSED BY THE BOARD MEMBERS THAT COULD GIVE RISE TO CONFLICTS OF INTEREST, THE INTERNAL LEGAL COUNSEL REVIEWS ALL TRANSACTIONS BETWEEN SUCH INTERESTS AND AFFILIATES OF THE FOUNDATION, TO DETERMINE WHETHER THESE TRANSACTION WERE CONDUCTED AT ARM'S LENGTH.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, LINE 15:</FormAndLineReferenceDesc>
        <ExplanationTxt>EMPLOYEES ARE LEASED FROM THE INFIRMARY. PLEASE SEE THE INFIRMARY'S RETURN FOR COMPENSATION DISCLOSURES. THE CHAIRMAN OF THE COMPENSATION COMMITTEE OF THE BOARD OF THE MASSACHUSETTS EYE AND EAR INFIRMARY PRESENTS A RECOMMENDATION TO THE COMPENSATION COMMITTEE WHO HAVE FINAL APPROVAL OF THE CEO'S BASE SALARY AND BONUS AMOUNT. THE CEO RECOMMENDS EXECUTIVE SALARIES TO THE COMPENSATION COMMITTEE OF THE BOARD WHICH HAS FINAL AUTHORIZATION TO APPROVE IT. THE COMPENSATION COMMITTEE MEETING WAS HELD ON NOVEMBER 15, 2017. TOTAL COMPENSATION FOR THE CEO, CHIEFS AND VICE PRESIDENTS, INCLUDING BONUS PAYMENTS, INCLUDING COMPARABILITY DATA, IS ANALYZED BY INDEPENDENT COMPENSATION CONSULTANTS AND IS DETERMINED TO BE REASONABLE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, LINE 19:</FormAndLineReferenceDesc>
        <ExplanationTxt>SUMMARIZED FINANCIAL STATEMENTS ARE AVAILABLE ON THE INFIRMARY'S WEBSITE: WWW.MASSEYEANDEAR.ORG. AUDITED FINANCIAL STATEMENTS ARE AVAILABLE UPON REQUEST. THE FORM 990 IS AVAILABLE UPON REQUEST. GOVERNING DOCUMENTS AND CONFLICT OF INTEREST POLICY ARE ALSO AVAILABLE UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VII:</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPENSATION IS FOR PROFESSIONAL SERVICES AND NOT FOR SERVICE AS OFFICERS. THE FOUNDATION LEASES EMPLOYEES FROM THE INFIRMARY. PLEASE SEE THE INFIRMARY'S RETURN FOR COMPENSATION DISCLOSURES.</ExplanationTxt>
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        <PrimaryActivitiesTxt>PATIENT CARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>9</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>FOUNDATION</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>EMBANKMENT SERVICES INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>243 CHARLES STREET</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02114</ZIPCd>
        </USAddress>
        <EIN>043272965</EIN>
        <PrimaryActivitiesTxt>SUPPORT</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>12-TYPE I</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>FOUNDATION</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>CIRCLE COMPANY INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>243 CHARLES STREET</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02114</ZIPCd>
        </USAddress>
        <EIN>042801797</EIN>
        <PrimaryActivitiesTxt>TITLE HOLDNG</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(25)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>N/A</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>FOUNDATION</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>SCHEPENS EYE RESEARCH INSTITUTE INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>20 STANIFORD STREET</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02114</ZIPCd>
        </USAddress>
        <EIN>042129889</EIN>
        <PrimaryActivitiesTxt>RESEARCH</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>7</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>FOUNDATION</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>PARTNERS HEALTHCARE SYSTEM INC (PHS)</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>800 BOYLSTON STREET</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02199</ZIPCd>
        </USAddress>
        <EIN>043230035</EIN>
        <PrimaryActivitiesTxt>HOSPITAL</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>3</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>PARTNERS HEALTHCARE GROUP (SEE PART VII)</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>800 BOYLSTON STREET</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02199</ZIPCd>
        </USAddress>
        <PrimaryActivitiesTxt>HEALTHCARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(4)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>PHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>NEIGHBORHOOD HEALTH PLAN INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>253 Summer Street</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02210</ZIPCd>
        </USAddress>
        <EIN>042932021</EIN>
        <PrimaryActivitiesTxt>INSURANCE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(4)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>NONE</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>PHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>COMMUNITY HEALTH ALLIANCE INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>253 SUMMER STREET</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02110</ZIPCd>
        </USAddress>
        <EIN>043454185</EIN>
        <PrimaryActivitiesTxt>INSURANCE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>12A</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NHP</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>PARTNERS POOLED INVESTMENT HOLDINGS LLC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>800 BOYLSTON STREET</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02199</ZIPCd>
        </USAddress>
        <EIN>821715859</EIN>
        <PrimaryActivitiesTxt>SUPPORT ORG.</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>12A</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>PHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedOrgTxblPartnershipGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>PHS BAY COLONY</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>245 Park Avenue</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10167</ZIPCd>
        </USAddress>
        <EIN>133887448</EIN>
        <PrimaryActivitiesTxt>INVESTMENTS</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DE</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <PredominantIncomeTypeTxt>N/A</PredominantIncomeTypeTxt>
      </IdRelatedOrgTxblPartnershipGrp>
      <IdRelatedOrgTxblPartnershipGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>PARTNERS HEALTHCARE SYSTEM POOLED INVEST</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>101 MERRIMAC STREET</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02114</ZIPCd>
        </USAddress>
        <EIN>043268842</EIN>
        <PrimaryActivitiesTxt>INVESTMENTS</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <PredominantIncomeTypeTxt>N/A</PredominantIncomeTypeTxt>
      </IdRelatedOrgTxblPartnershipGrp>
      <IdRelatedOrgTxblPartnershipGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>RADIATION THERAPY OF SOUTHEASTERN MA LLC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>375 LONGWOOD AVENUE</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02115</ZIPCd>
        </USAddress>
        <EIN>010873580</EIN>
        <PrimaryActivitiesTxt>RADIATION THERAPY</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <PredominantIncomeTypeTxt>N/A</PredominantIncomeTypeTxt>
      </IdRelatedOrgTxblPartnershipGrp>
      <IdRelatedOrgTxblPartnershipGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>PARTNERS INNOVATION FUND LLC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>101 HUNTINGTON AVENUE</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02199</ZIPCd>
        </USAddress>
        <EIN>262899986</EIN>
        <PrimaryActivitiesTxt>INVESTMENTS</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <PredominantIncomeTypeTxt>N/A</PredominantIncomeTypeTxt>
      </IdRelatedOrgTxblPartnershipGrp>
      <IdRelatedOrgTxblPartnershipGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>PARTNERS HEALTHCARE ACCOUNTABLE CARE ORG</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>399 REVOLUTION DRIVE</AddressLine1Txt>
          <CityNm>SOMERVILLE</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02145</ZIPCd>
        </USAddress>
        <EIN>812762122</EIN>
        <PrimaryActivitiesTxt>ACCOUNTABLE CARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <PredominantIncomeTypeTxt>N/A</PredominantIncomeTypeTxt>
      </IdRelatedOrgTxblPartnershipGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>Newton-Wellesley Physician Hospital Org</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>2014 Washington Street</AddressLine1Txt>
          <CityNm>NEWTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02462</ZIPCd>
        </USAddress>
        <EIN>043209749</EIN>
        <PrimaryActivitiesTxt>Healthcare</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>SUBCH. C CORP.</EntityTypeTxt>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>ALLWAYS HEALTH PARTNERS INSURANCE COMPAN</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>399 REVOLUTION DRIVE</AddressLine1Txt>
          <CityNm>SOMERVILLE</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02145</ZIPCd>
        </USAddress>
        <EIN>830970929</EIN>
        <PrimaryActivitiesTxt>INSURANCE COMPANY</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <EntityTypeTxt>SUBCH. C CORP.</EntityTypeTxt>
      </IdRelatedOrgTxblCorpTrGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>false</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>true</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>false</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>false</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>false</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>true</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>true</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>true</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>true</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>true</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>MASSACHUSETTS EYE AND EAR INFIRMARY</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>B</TransactionTypeTxt>
        <InvolvedAmt>18627395</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>CASH</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>MASSACHUSETTS EYE AND EAR ASSOCIATES INC</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>B</TransactionTypeTxt>
        <InvolvedAmt>3570106</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>CASH</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>SCHEPENS EYE RESEARCH INSTITUTE INC</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>B</TransactionTypeTxt>
        <InvolvedAmt>755751</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>CASH</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>MASSACHUSETTS EYE AND EAR INFIRMARY</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>M</TransactionTypeTxt>
        <InvolvedAmt>2723970</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>CASH</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>MASSACHUSETTS EYE AND EAR INFIRMARY</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>O</TransactionTypeTxt>
        <InvolvedAmt>703630</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>CASH</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>MASSACHUSETTS EYE AND EAR ASSOCIATES INC</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>S</TransactionTypeTxt>
        <InvolvedAmt>6199142</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>CASH</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>MASSACHUSETTS EYE AND EAR INFIRMARY</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>P</TransactionTypeTxt>
        <InvolvedAmt>13424383</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>CASH</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE R, PART II</FormAndLineReferenceDesc>
        <ExplanationTxt>EFFECTIVE APRIL 1, 2018, THE ORGANIZATION BECAME RELATED TO PARTNERS HEALTHCARE SYSTEM, INC. AND ITS RELATED ENTITIES IN ITS GROUP EXEMPTION. EFFECTIVE OCTOBER 1, 2018, THE ORGANIZATION BECAME PART OF THE PARTNERS GROUP EXEMPTION.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleR>
  </ReturnData>
</Return>