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        <FormAndLineReferenceDesc>PART II:</FormAndLineReferenceDesc>
        <ExplanationTxt>BECAUSE OF THE SHORT YEAR-END FILING, THE COLUMNS IN SCHEDULE A PART II CORRESPOND TO THE FOLLOWING TAX YEARS: 2018 = FYE 9/30/19 2019 = FYE 9/30/20 2020 = SHORT YEAR-END 12/31/20 2021 = FYE 12/31/21 2022 = FYE 12/31/22</ExplanationTxt>
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        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>MARSHFIELD CLINIC HEALTH SYSTEM FOUNDATION, INC. MAINTAINS ENDOWMENT FUNDS IN THE FOLLOWING CATEGORIES: GENERAL ENDOWMENT TO FUND OPERATIONS, ENDOWED PROGRAMS TO FUND VARIOUS PATIENT CARE, RESEARCH AND EDUCATION PROGRAMS SUCH AS ONCOLOGY RESEARCH, SUMMER STUDENT INTERN PROGRAMS, AND THE ANGEL FUND; AND ENDOWED CHAIRS AND ENDOWED DISTINGUISHED PHYSICIAN/SCIENTIST AWARDS TO FUND THE RESEARCH, EDUCATION OR ADMINISTRATIVE ACTIVITIES OF THE NAMED CHAIR OR AWARD RECIPIENT.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION APPLIES FINANCIAL ACCOUNTING STANDARDS BOARD (FASB) ACCOUNTING STANDARDS CODIFICATION (ASC) TOPIC 740, INCOME TAXES (ASC 740), WHICH CLARIFIES THE ACCOUNTING FOR UNCERTAINTY IN INCOME TAXES RECOGNIZED IN A COMPANY'S FINANCIAL STATEMENTS. ASC 740 PRESCRIBES A MORE-LIKELY-THAN-NOT RECOGNITION THRESHOLD AND MEASUREMENT ATTRIBUTE FOR THE FINANCIAL STATEMENT RECOGNITION AND MEASUREMENT OF A TAX POSITION TAKEN OR EXPECTED TO BE TAKEN. UNDER ASC 740, TAX POSITIONS WILL BE EVALUATED FOR RECOGNITION, DERECOGNITION, AND MEASUREMENT USING CONSISTENT CRITERIA AND WILL PROVIDE MORE INFORMATION ABOUT THE UNCERTAINTY IN INCOME TAX ASSETS AND LIABILITIES. THE SYSTEM HAS DETERMINED THAT IT DOESN'T HAVE ANY MATERIAL UNCERTAIN TAX POSITIONS AS OF DECEMBER 31, 2022 OR DECEMBER 31, 2021.</ExplanationTxt>
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    <IRS990ScheduleI documentId="RetDoc1041900001">
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>MARSHFIELD CLINIC INC</BusinessNameLine1Txt>
        </RecipientBusinessName>
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          <CityNm>MARSHFIELD</CityNm>
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      <RecipientTable>
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      <RecipientTable>
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        </RecipientBusinessName>
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          <CityNm>RICE LAKE</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>MARSHFIELD CLINIC HEALTH SYSTEM FOUNDATION, INC. IS ORGANIZED AND OPERATED SPECIFICALLY TO SUPPORT AND BENEFIT MARSHFIELD CLINIC, INC., MCHS HOSPITALS, INC., LAKEVIEW MEDICAL CENTER INC. OF RICE LAKE AND OTHER AFFILIATES OF MARSHFIELD CLINIC HEALTH SYSTEM, INC (MCHS). THE FOUNDATION WORKS WITH THE MCHS STRATEGIC PHILANTHROPY COMMITTEE, COMPRISED OF KEY MCHS LEADERS, TO SET SYSTEM FUNDRAISING PRIORITIES AND MEETS WITH EACH STRATEGIC AREA TO APPROVE SPENDING PLANS AND ENSURE DONATED FUNDS ARE BEING USED FOR THE INTENDED PURPOSE.</ExplanationTxt>
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        <DeferredCompRltdOrgsAmt>2986</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>2917</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>107231</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>THE MARSHFIELD CLINIC HEALTH SYSTEM'S (MCHS) INDEPENDENT COMPENSATION COMMITTEE (THE COMMITTEE) HAS FINAL AUTHORITY FOR APPROVING COMPENSATION AND BENEFITS OF ALL DISQUALIFIED PERSONS EMPLOYED BY ANY OF THE ORGANIZATIONS IN THE SYSTEM. THE COMMITTEE USES COMBINATIONS OF THE FOLLOWING TO EVALUATE COMPENSATION: COMPENSATION COMMITTEE, INDEPENDENT COMPENSATION CONSULTANT, COMPENSATION SURVEY OR STUDY, APPROVAL BY THE BOARD OR COMPENSATION COMMITTEE, AND WRITTEN EMPLOYMENT CONTRACTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINES 4A-B</FormAndLineReferenceDesc>
        <ExplanationTxt>LINE 4A: IN 2022, EDNA DEVRIES RECEIVED A SEVERANCE PAYMENT IN THE AMOUNT OF $35,467. LINE 4B: THE FOLLOWING INDIVIDUALS PARTICIPATED IN A 457(F) SUPPLEMENTAL NON-QUALIFIED RETIREMENT PLAN AND RECEIVED A DISTRIBUTION FROM OR HAD AMOUNTS VEST IN THE PLAN: SUSAN TURNEY, MD - $219,744 THE FOLLOWING INDIVIDUALS PARTICATED IN A 457(F) SUPPLEMENTAL NON-QUALIFIED RETIREMENT PLAN BUT DID NOT RECEIVE A DISTRIBUTION OR HAVE AN AMOUNT VEST IN THE PLAN. UNDER THE PLAN, AMOUNTS DO NOT VEST UNTIL TWO YEARS AFTER SEPARATION FROM THE ORGANIZATION: NARAYANA MURALI, MD JERARD JENSEN GORDON EDWARDS WILLIAM MELMS, MD TERI WILCZEK JESSICA WERNBERG, MD ERIK DOVRE, MD TAE GARDNER, MD PATRICK WOLF, DO EDNA DEVRIES, MD</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleM documentId="RetDoc1042900001">
      <WorksOfArtGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>9</ContributionCnt>
        <NoncashContributionsRptF990Amt>1508</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </WorksOfArtGrp>
      <ClothingAndHouseholdGoodsGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <NoncashContributionsRptF990Amt>510</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </ClothingAndHouseholdGoodsGrp>
      <CollectiblesGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>200</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </CollectiblesGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>LIVESTOCK</Desc>
        <ContributionCnt>36</ContributionCnt>
        <NoncashContributionsRptF990Amt>87253</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>MISC, SPORTING GOODS, TRAVEL EXPERIENCES</Desc>
        <ContributionCnt>106</ContributionCnt>
        <NoncashContributionsRptF990Amt>77120</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>FOOD &amp; BEV</Desc>
        <ContributionCnt>21</ContributionCnt>
        <NoncashContributionsRptF990Amt>3647</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>JEWERLY</Desc>
        <ContributionCnt>6</ContributionCnt>
        <NoncashContributionsRptF990Amt>3510</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>1</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>0</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, COLUMN (B):</FormAndLineReferenceDesc>
        <ExplanationTxt>NUMBER OF CONTRIBUTIONS</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IV, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>MARSHFIELD CLINIC HEALTH SYSTEM (INCLUDING MARSHFIELD CLINIC HEALTH SYSTEM FOUNDATION, INC.) IS A MEMBER OF VARIOUS HEALTHCARE ASSOCIATIONS (I.E. WISCONSIN HOSPITAL ASSOCIATION) THAT MAY PERFORM SOME LOBBYING ACTIVITY. ALL ASSOCIATED DUES ARE DISCLOSED ON THE FORM 990 OF MARSHFIELD CLINIC HEALTH SYSTEM, INC.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART V, LINE 2A:</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL PERSONNEL SERVICES FOR MARSHFIELD CLINIC HEALTH SYSTEM FOUNDATION, INC. ARE PERFORMED BY EMPLOYEES OF MARSHFIELD CLINIC HEALTH SYSTEM, INC.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>MARSHFIELD CLINIC HEALTH SYSTEM, INC. (A WISCONSIN NONSTOCK, NONPROFIT ORGANIZATION DESCRIBED IN CODE SECTION 501(C)(3)) IS THE SOLE MEMBER OF MARSHFIELD CLINIC HEALTH SYSTEM FOUNDATION, INC.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>MARSHFIELD CLINIC HEALTH SYSTEM, INC. (AS THE SOLE MEMBER) HAS THE RESERVE POWER TO APPOINT OR REMOVE MEMBERS OF THE BOARD OF DIRECTORS OF MARSHFIELD CLINIC HEALTH SYSTEM FOUNDATION, INC.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>MARSHFIELD CLINIC HEALTH SYSTEM, INC. (THE SOLE MEMBER) HAS THE RIGHT TO APPROVE ANY CHANGES TO THE ARTICLES OF INCORPORATION AND BYLAWS OF MARSHFIELD CLINIC HEALTH SYSTEM FOUNDATION, INC. MARSHFIELD CLINIC HEALTH SYSTEM, INC. (THE SOLE MEMBER) HAS THE RIGHT TO INITIATE AND APPROVE LONG-TERM BORROWING AND OTHER FORMS OF LONG-TERM INDEBTEDNESS, INITIATE AND APPROVE THE PURCHASE, SALE OR ENCUMBRANCE OF REAL AND PERSONAL PROPERTY AND APPROVE OR DISAPPROVE ANNUAL OPERATING AND CAPITAL BUDGETS. MARSHFIELD CLINIC HEALTH SYSTEM, INC. (THE SOLE MEMBER) ALSO HAS THE RIGHT TO INITIATE AND APPROVE ANY OF THE FOLLOWING ACTIONS: MERGER, CONSOLIDATION, AFFILIATION OR JOINT VENTURE WITH ANY OTHER ENTITY OR ENTITIES; LIQUIDATION, REORGANIZATION OR DISSOLUTION OF THE ORGANIZATION; FILING OF A VOLUNTARY PETITION IN BANKRUPTCY; ANY CHANGE IN CONTROL OF THE ORGANIZATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>MARSHFIELD CLINIC HEALTH SYSTEM, INC. ENGAGES A PUBLIC ACCOUNTING FIRM TO PREPARE AND REVIEW THE FORM 990 IN ADDITION TO REVIEW BY THE SYSTEM CFO, VP OF FINANCE AND TAX DEPARTMENT. PRIOR TO FILING THE FORM WITH THE IRS, THE CFO AND HIS/HER DESIGNEE WILL PROVIDE TO EACH MEMBER OF THE SYSTEM'S AUDIT AND COMPLIANCE COMMITTEE (A SUBCOMMITTEE OF THE BOARD OF DIRECTORS) A COPY IN ELECTRONIC OR PAPER FORM OF THE COMPLETED FORM 990 (AND ALL REQUIRED SCHEDULES) FOR REVIEW.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL OFFICERS, BOARD DIRECTORS, AND KEY EMPLOYEES OF EVERY MARSHFIELD CLINIC HEALTH SYSTEM (MCHS) ENTITY, AS WELL AS ANY OTHER PERSON DESIGNATED BY THE AUDIT AND COMPLIANCE COMMITTEE (ACC) TO BE A REQUIRED REPORTER BY VIRTUE OF HIS OR HER POSITION AT A SYSTEM ENTITY, SHALL ANNUALLY COMPLETE A CONFLICT OF INTEREST DISCLOSURE FORM. SUCH FORMS SHALL BE DISTRIBUTED AND RECORDED BY THE SYSTEM'S DESIGNATED COMPLIANCE OFFICER. ALL FINANCIAL INTERESTS DISCLOSED AS PART OF THE ANNUAL DISCLOSURE PROCESS SHALL BE REVIEWED BY THE ACC. THE ACC SHALL INFORM THE BOARD OF DISCLOSED FINANCIAL INTERESTS WHICH MAY BEAR UPON OR RELATE TO A TRANSACTION UPON WHICH THE BOARD OR ANOTHER BOARD, COMMITTEE OR OTHER BODY OF A SYSTEM ENTITY, MAY DELIBERATE OR ACT. IN ADDITION TO THE ANNUAL DISCLOSURES, IF AT ANY TIME BETWEEN ANNUAL DISCLOSURES, A REQUIRED REPORTER BECOMES AWARE THAT THE BOARD, OR A BOARD, COMMITTEE OR OTHER BODY, OF ANY SYSTEM ENTITY MAY DELIBERATE OR ACT UPON ANY TRANSACTION THAT MAY HAVE ANY BEARING OF ANY KIND UPON, OR MAY RELATE IN ANY MANNER TO, AN EXISTING, INTENDED OR EXPECTED FINANCIAL INTEREST OF THE REQUIRED REPORTER, HE OR SHE SHALL DISCLOSE THE FINANCIAL INTEREST TO THE RELEVANT SYSTEM ENTITY BOARD, COMMITTEE OR BODY CHAIR, AS WELL AS TO THE SYSTEM'S COMPLIANCE OFFICER, IN ADVANCE OF ANY DELIBERATIONS OR ACTION, WRITTEN DISCLOSURE OF THE EXISTENCE, NATURE AND EXTENT OF HIS OR HER FINANCIAL INTEREST. ALL WRITTEN OR ORAL DISCLOSURES OF FINANCIAL INTERESTS SHALL BE RECORDED IN THE MINUTES OF THE BOARD AND BY THE OFFICE OF THE COMPLIANCE OFFICER. THE COMPLIANCE OFFICER SHALL DISCLOSE THE COMPLETED FORMS AS NECESSARY TO THOSE MCHS EMPLOYEES RESPONSIBLE FOR COMPLETION OF THE IRS FORM 990.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SYSTEM'S INDEPENDENT COMPENSATION COMMITTEE (COMPENSATION COMMITTEE) SHALL HAVE FINAL AUTHORITY FOR APPROVING COMPENSATION AND BENEFITS OF ALL DISQUALIFIED PERSONS (AS THAT TERM IS DEFINED IN 4958 OF THE INTERNAL REVENUE CODE (THE CODE)) EMPLOYED BY THE CORPORATION, INCLUDING BUT NOT LIMITED TO THE CORPORATION'S CEO. THE TERM DISQUALIFIED PERSONS INCLUDES (BUT IS NOT LIMITED TO) ANY PERSON (OR THE PERSON'S FAMILY MEMBER) WHO WAS, AT ANY TIME DURING THE 5-YEAR PERIOD ENDING ON THE DATE OF THE TRANSACTION, IN A POSITION TO EXERCISE SUBSTANTIAL INFLUENCE OVER THE AFFAIRS OF THE ORGANIZATION. IT SHALL BE THE RESPONSIBILITY OF THE COMPENSATION COMMITTEE TO INSURE THAT THE SYSTEM DOES NOT PAY AN AMOUNT THAT EXCEEDS REASONABLE COMPENSATION FOR ANY DISQUALIFIED PERSON. THE COMPENSATION COMMITTEE AND ITS OPERATING PROCEDURES SHALL BE DESIGNED TO ESTABLISH THE REBUTTABLE PRESUMPTION OF REASONABLENESS OF COMPENSATION OUTLINED IN TREASURY REG. SEC. 53.4958-6 WITH RESPECT TO EACH DISQUALIFIED PERSON. IN DETERMINING REASONABLENESS OF COMPENSATION, THE COMPENSATION COMMITTEE SHALL EVALUATE APPROPRIATE INFORMATION AS TO COMPARABILITY OF COMPENSATION, INCLUDING BUT NOT LIMITED TO: COMPENSATION LEVELS PAID BY SIMILARLY SITUATED ORGANIZATIONS FOR COMPARABLE POSITIONS; THE AVAILABILITY OF SIMILAR SERVICES IN THE SYSTEM'S GEOGRAPHIC AREA; CURRENT COMPENSATION SURVEYS COMPILED BY INDEPENDENT FIRMS; AND ACTUAL WRITTEN JOB OFFERS FROM SIMILAR INSTITUTIONS. THE COMPENSATION COMMITTEE SHALL HAVE INDEPENDENT AUTHORITY TO OBTAIN OUTSIDE EXPERT OPINIONS ON THE REASONABLENESS AND FAIR MARKET VALUE OF COMPENSATION AND GATHER OTHER INFORMATION IT CONSIDERS NECESSARY OR APPROPRIATE TO MAKE ITS DECISIONS ON COMPENSATION. THE COMPENSATION COMMITTEE SHALL TIMELY DOCUMENT ITS DETERMINATION OF REASONABLENESS OF COMPENSATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>MARSHFIELD CLINIC HEALTH SYSTEM FOUNDATION, INC. DOES NOT MAKE ITS CURRENT GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY OR FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC UNLESS INCLUDED AS PART OF A FORM THAT IS REQUIRED TO BE PUBLICLY AVAILABLE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VII, SECTION A:</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPENSATION REPORTED FOR TERI WILCZEK HAS BEEN PAID BY A RELATED ORGANIZATION AND COMMON PAYMASTER, MARSHFIELD CLINIC HEALTH SYSTEM, EIN 46-1495343. SINCE ALL SERVICES PERFORMED BY THIS INDIVIDUAL WAS FOR MARSHFIELD CLINIC HEALTH SYSTEM FOUNDATION, INC., THE COMPENSATION HAS BEEN REPORTED IN COLUMN D AS IF PAID BY THE ORGANIZATION. MARSHFIELD CLINIC HEALTH SYSTEM HAS COMPLIED WITH PAYROLL FILING REQUIREMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>NET ASSETS RELEASED FROM RESTRICTION 1,065,984. CHANGE IN SPLIT INTEREST AGREEMENTS -196,780. NET ASSET TRANSFERS WITH RELATED ORGANIZATIONS -1,948,018. PRIOR PERIOD ADJUSTMENT -216.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043400001">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>FLAMBEAU HOSPITAL INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>98 SHERRY AVE</AddressLine1Txt>
          <CityNm>PARK FALLS</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
          <ZIPCd>54552</ZIPCd>
        </USAddress>
        <EIN>390973724</EIN>
        <PrimaryActivitiesTxt>HOSPITAL</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>WI</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 3</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>MCHS HOSP</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>LAKEVIEW MEDICAL CENTER INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>1700 W STOUT ST</AddressLine1Txt>
          <CityNm>RICE LAKE</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
          <ZIPCd>54868</ZIPCd>
        </USAddress>
        <EIN>390837206</EIN>
        <PrimaryActivitiesTxt>HOSPITAL</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>WI</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 3</PublicCharityStatusTxt>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>VOLUNTEER PARTNERS OF LAKEVIEW MEDICAL</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>1700 W STOUT ST</AddressLine1Txt>
          <CityNm>RICE LAKE</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
          <ZIPCd>54868</ZIPCd>
        </USAddress>
        <EIN>391329084</EIN>
        <PrimaryActivitiesTxt>SUPPORT ORG</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>WI</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 12D, III-O</PublicCharityStatusTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>FAMILY HEALTH CENTER OF MARSHFIELD INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>1000 N OAK AVE</AddressLine1Txt>
          <CityNm>MARSHFIELD</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
          <ZIPCd>54449</ZIPCd>
        </USAddress>
        <EIN>391681547</EIN>
        <PrimaryActivitiesTxt>COM HLTH CTR</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>WI</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 7</PublicCharityStatusTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>MARSHFIELD CLINIC INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>1000 N OAK AVE</AddressLine1Txt>
          <CityNm>MARSHFIELD</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
          <ZIPCd>54449</ZIPCd>
        </USAddress>
        <EIN>390452970</EIN>
        <PrimaryActivitiesTxt>MEDICAL SVCS</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>WI</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 3</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>MCHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>SECURITY HEALTH PLAN OF WISCONSIN INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>1515 N ST JOSEPH AVE</AddressLine1Txt>
          <CityNm>MARSHFIELD</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
          <ZIPCd>54449</ZIPCd>
        </USAddress>
        <EIN>391572880</EIN>
        <PrimaryActivitiesTxt>HMO</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>WI</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(4)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>N/A</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>MCHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>MCHS HOSPITALS INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>1000 N OAK AVE</AddressLine1Txt>
          <CityNm>MARSHFIELD</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
          <ZIPCd>54449</ZIPCd>
        </USAddress>
        <EIN>810977948</EIN>
        <PrimaryActivitiesTxt>HOSPITAL</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>WI</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 3</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>MCHS</BusinessNameLine1Txt>
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        <ControlledOrganizationInd>0</ControlledOrganizationInd>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>MARSHFIELD CLINIC HEALTH SYSTEM INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>1000 N OAK AVE</AddressLine1Txt>
          <CityNm>MARSHFIELD</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
          <ZIPCd>54449</ZIPCd>
        </USAddress>
        <EIN>461495343</EIN>
        <PrimaryActivitiesTxt>SUPPORT ORG</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>WI</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 12D, III-O</PublicCharityStatusTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>BEAVER DAM COMMUNITY HOSPITALS INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>707 S UNIVERSITY AVE</AddressLine1Txt>
          <CityNm>BEAVER DAM</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
          <ZIPCd>53916</ZIPCd>
        </USAddress>
        <EIN>391157876</EIN>
        <PrimaryActivitiesTxt>HOSPITAL</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>WI</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 3</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>MCHS HOSP</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>MEMORIAL HOSPITAL INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>N3708 RIVER AVE</AddressLine1Txt>
          <CityNm>NEILLSVILLE</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
          <ZIPCd>54456</ZIPCd>
        </USAddress>
        <EIN>390806828</EIN>
        <PrimaryActivitiesTxt>HOSPITAL</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>WI</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 3</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>MCHS HOSP</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>THE FOUNDATION OF MEMORIAL HOSPITAL INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>N3708 RIVER AVE</AddressLine1Txt>
          <CityNm>NEILLSVILLE</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
          <ZIPCd>54456</ZIPCd>
        </USAddress>
        <EIN>383800811</EIN>
        <PrimaryActivitiesTxt>PHILANTHROPY</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>WI</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>MCHS FOUNDATION</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>1</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>DICKINSON COUNTY HEALTHCARE SYSTEM</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>1721 S STEPHENSON AVE</AddressLine1Txt>
          <CityNm>IRON MOUNTAIN</CityNm>
          <StateAbbreviationCd>MI</StateAbbreviationCd>
          <ZIPCd>49801</ZIPCd>
        </USAddress>
        <EIN>382780429</EIN>
        <PrimaryActivitiesTxt>HOSPITAL</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MI</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 3</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>MCHS HOSP</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedOrgTxblPartnershipGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>THE DIAGNOSTIC &amp; TREATMENT CENTER LLC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>3401 CRANBERRY BLVD</AddressLine1Txt>
          <CityNm>WESTON</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
          <ZIPCd>54476</ZIPCd>
        </USAddress>
        <EIN>200691634</EIN>
        <PrimaryActivitiesTxt>MEDICAL SVCS</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>WI</LegalDomicileStateCd>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <DisproportionateAllocationsInd>0</DisproportionateAllocationsInd>
        <GeneralOrManagingPartnerInd>0</GeneralOrManagingPartnerInd>
      </IdRelatedOrgTxblPartnershipGrp>
      <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>0</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>0</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>0</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>0</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>1</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>1</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>1</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>1</TransferFromOtherOrgInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE R, PART V, LINE 1:</FormAndLineReferenceDesc>
        <ExplanationTxt>MARSHFIELD CLINIC HEALTH SYSTEM, INC. (A 501(C)(3) ORGANIZATION), IS THE PARENT ORGANIZATION OF MARSHFIELD CLINIC HEALTH SYSTEM FOUNDATION, INC. THE FOLLOWING COMPANIES ARE RELATED TO MARSHFIELD CLINIC HEALTH SYSTEM FOUNDATION, INC. THROUGH BROTHER/SISTER RELATIONSHIPS DUE TO A COMMON PARENT ORGANIZATION: MARSHFIELD CLINIC, INC. SECURITY HEALTH PLAN OF WISCONSIN, INC. MCHS HOSPITALS, INC.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleR>
  </ReturnData>
</Return>
