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        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>32000</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>0</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>0</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>0</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>VARICK MEDIA MANAGEMENT</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>711 3RD AVE 2ND FLOOR</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10017</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>MARKETING SERVICES</ServicesDesc>
        <CompensationAmt>1796593</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>TALLEY MANAGEMENT GROUP INC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>19 MANTUA ROAD</AddressLine1Txt>
            <CityNm>MOUNT ROYAL</CityNm>
            <StateAbbreviationCd>NJ</StateAbbreviationCd>
            <ZIPCd>08061</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>ADMINISTRATIVE &amp; MANAGEMENT SERVICES</ServicesDesc>
        <CompensationAmt>1735726</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>ZS ASSOCIATES INTERNATIONAL INC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <ForeignAddress>
            <AddressLine1Txt>32 8001</AddressLine1Txt>
            <CityNm>LOWENSTRESSE</CityNm>
            <ProvinceOrStateNm>ZURICH</ProvinceOrStateNm>
            <CountryCd>SZ</CountryCd>
          </ForeignAddress>
        </ContractorAddress>
        <ServicesDesc>REGISTRY SUPPORT</ServicesDesc>
        <CompensationAmt>1070498</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>BIOSECTOR 2 LLC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>450 W 15TH STREET 7TH FL</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10011</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>PUBLIC RELATIONS</ServicesDesc>
        <CompensationAmt>290800</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>MAYO CLINIC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>200 1ST STREET SW</AddressLine1Txt>
            <CityNm>ROCHESTER</CityNm>
            <StateAbbreviationCd>MN</StateAbbreviationCd>
            <ZIPCd>55905</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>RESEARCH SERVICES</ServicesDesc>
        <CompensationAmt>198351</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>7</CntrctRcvdGreaterThan100KCnt>
      <AllOtherContributionsAmt>5516147</AllOtherContributionsAmt>
      <TotalContributionsAmt>5516147</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>MEETINGS REVENUE</Desc>
        <BusinessCd>541900</BusinessCd>
        <TotalRevenueColumnAmt>1205521</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>1205521</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>EDITORIAL PAYMENTS</Desc>
        <BusinessCd>511120</BusinessCd>
        <TotalRevenueColumnAmt>299845</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>299845</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>MEMBER DUES</Desc>
        <BusinessCd>541900</BusinessCd>
        <TotalRevenueColumnAmt>213246</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>213246</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>JOURNAL SUBSCRIPTIONS</Desc>
        <BusinessCd>511120</BusinessCd>
        <TotalRevenueColumnAmt>71106</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>52206</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>18900</UnrelatedBusinessRevenueAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>1789718</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>60882</TotalRevenueColumnAmt>
        <ExclusionAmt>60882</ExclusionAmt>
      </InvestmentIncomeGrp>
      <RoyaltiesRevenueGrp>
        <TotalRevenueColumnAmt>300000</TotalRevenueColumnAmt>
        <ExclusionAmt>300000</ExclusionAmt>
      </RoyaltiesRevenueGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>3897605</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>3930872</SecuritiesAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>-33267</SecuritiesAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>-33267</TotalRevenueColumnAmt>
        <ExclusionAmt>-33267</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <OtherRevenueMiscGrp>
        <Desc>MISCELLANEOUS</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>62751</TotalRevenueColumnAmt>
        <ExclusionAmt>62751</ExclusionAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueMiscGrp>
        <Desc>HOTEL REBATE</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>29352</TotalRevenueColumnAmt>
        <ExclusionAmt>29352</ExclusionAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueTotalAmt>92103</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>7725583</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>1770818</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>18900</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>419718</ExclusionAmt>
      </TotalRevenueGrp>
      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>94386</TotalAmt>
        <ProgramServicesAmt>94386</ProgramServicesAmt>
      </GrantsToDomesticIndividualsGrp>
      <ForeignGrantsGrp>
        <TotalAmt>105349</TotalAmt>
        <ProgramServicesAmt>105349</ProgramServicesAmt>
      </ForeignGrantsGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>32000</TotalAmt>
        <ProgramServicesAmt>32000</ProgramServicesAmt>
      </CompCurrentOfcrDirectorsGrp>
      <FeesForServicesManagementGrp>
        <TotalAmt>1735726</TotalAmt>
        <ProgramServicesAmt>1326227</ProgramServicesAmt>
        <ManagementAndGeneralAmt>409499</ManagementAndGeneralAmt>
      </FeesForServicesManagementGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>34600</TotalAmt>
        <ManagementAndGeneralAmt>34600</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>22241</TotalAmt>
        <ManagementAndGeneralAmt>22241</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>8924</TotalAmt>
        <ManagementAndGeneralAmt>8924</ManagementAndGeneralAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>2497253</TotalAmt>
        <ProgramServicesAmt>2477283</ProgramServicesAmt>
        <ManagementAndGeneralAmt>19970</ManagementAndGeneralAmt>
      </FeesForServicesOtherGrp>
      <AdvertisingGrp>
        <TotalAmt>188795</TotalAmt>
        <ProgramServicesAmt>187535</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1260</ManagementAndGeneralAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>264017</TotalAmt>
        <ProgramServicesAmt>59542</ProgramServicesAmt>
        <ManagementAndGeneralAmt>204475</ManagementAndGeneralAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>169209</TotalAmt>
        <ProgramServicesAmt>24391</ProgramServicesAmt>
        <ManagementAndGeneralAmt>144818</ManagementAndGeneralAmt>
      </InformationTechnologyGrp>
      <TravelGrp>
        <TotalAmt>111356</TotalAmt>
        <ProgramServicesAmt>111356</ProgramServicesAmt>
      </TravelGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>1192973</TotalAmt>
        <ProgramServicesAmt>1192364</ProgramServicesAmt>
        <ManagementAndGeneralAmt>609</ManagementAndGeneralAmt>
      </ConferencesMeetingsGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>40065</TotalAmt>
        <ManagementAndGeneralAmt>40065</ManagementAndGeneralAmt>
      </DepreciationDepletionGrp>
      <OtherExpensesGrp>
        <Desc>PATIENT AWARENESS/ADVOC</Desc>
        <TotalAmt>1070903</TotalAmt>
        <ProgramServicesAmt>1070903</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>PUBLICATIONS</Desc>
        <TotalAmt>261979</TotalAmt>
        <ProgramServicesAmt>261979</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>MEMBERSHIP EXPENSE</Desc>
        <TotalAmt>166064</TotalAmt>
        <ManagementAndGeneralAmt>166064</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>BOARD &amp; COMMITTEE COSTS</Desc>
        <TotalAmt>156216</TotalAmt>
        <ProgramServicesAmt>66653</ProgramServicesAmt>
        <ManagementAndGeneralAmt>89563</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>16712</TotalAmt>
        <ProgramServicesAmt>13929</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2783</ManagementAndGeneralAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>8168768</TotalAmt>
        <ProgramServicesAmt>7023897</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1144871</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>2139366</BOYAmt>
        <EOYAmt>838949</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>2765515</BOYAmt>
        <EOYAmt>4163821</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <AccountsReceivableGrp>
        <BOYAmt>575218</BOYAmt>
        <EOYAmt>1009149</EOYAmt>
      </AccountsReceivableGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>200333</BOYAmt>
        <EOYAmt>254001</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>538009</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>237504</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>79458</BOYAmt>
        <EOYAmt>300505</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>2366003</BOYAmt>
        <EOYAmt>2313375</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <TotalAssetsGrp>
        <BOYAmt>8125893</BOYAmt>
        <EOYAmt>8879800</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>346287</BOYAmt>
        <EOYAmt>1144980</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <DeferredRevenueGrp>
        <BOYAmt>1179639</BOYAmt>
        <EOYAmt>1624803</EOYAmt>
      </DeferredRevenueGrp>
      <OtherLiabilitiesGrp>
        <BOYAmt>500</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </OtherLiabilitiesGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>1526426</BOYAmt>
        <EOYAmt>2769783</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsSFAS117Ind>X</OrganizationFollowsSFAS117Ind>
      <UnrestrictedNetAssetsGrp>
        <BOYAmt>3842490</BOYAmt>
        <EOYAmt>4288119</EOYAmt>
      </UnrestrictedNetAssetsGrp>
      <TemporarilyRstrNetAssetsGrp>
        <BOYAmt>2756977</BOYAmt>
        <EOYAmt>1821898</EOYAmt>
      </TemporarilyRstrNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>6599467</BOYAmt>
        <EOYAmt>6110017</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>8125893</BOYAmt>
        <EOYAmt>8879800</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>-443185</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>-46265</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>0</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>1074642</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>2106699</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>2729053</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>7152532</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>5516147</CurrentTaxYearAmt>
        <TotalAmt>18579073</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>1074642</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>2106699</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>2729053</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>7152532</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>5516147</CurrentTaxYearAmt>
        <TotalAmt>18579073</TotalAmt>
      </TotalCalendarYear170Grp>
      <SubstantialContributorsTotAmt>11168856</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>7410217</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>336005</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>338120</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>356618</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>648899</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>360882</CurrentTaxYearAmt>
        <TotalAmt>2040524</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <UnrelatedBusinessNetIncm170Grp>
        <CurrentTaxYearMinus4YearsAmt>8700</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus1YearAmt>9470</CurrentTaxYearMinus1YearAmt>
        <TotalAmt>18170</TotalAmt>
      </UnrelatedBusinessNetIncm170Grp>
      <OtherIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>575</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>79438</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>374861</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>296429</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>92103</CurrentTaxYearAmt>
        <TotalAmt>843406</TotalAmt>
      </OtherIncome170Grp>
      <TotalSupportAmt>21481173</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>4723598</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>0.34500</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.33140</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>SCHEDULE A, PART II, LINE 10, EXPLANATION OF OTHER INCOME:</FormAndLineReferenceDesc>
        <ExplanationTxt>MISCELLANEOUS HOTEL REBATE MEETING REVENUE</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1234500001" />
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>538009</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>237504</DepreciationAmt>
        <BookValueAmt>300505</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>300505</TotalBookValueLandBuildingsAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>7679318</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>-46265</NetUnrealizedGainsInvstAmt>
      <RevenueNotReportedAmt>-46265</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>7725583</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>7725583</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>8168768</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesNotReportedAmt>0</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>8168768</ExpensesSubtotalAmt>
      <ExpensesNotRptFinclStmtAmt>0</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>8168768</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOCIETY IS EXEMPT FROM FEDERAL INCOME TAX UNDER SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE. HOWEVER, INCOME FROM CERTAIN ACTIVITIES NOT DIRECTLY RELATED TO THE SOCIETY'S TAX-EXEMPT PURPOSE IS SUBJECT TO TAXATION AS UNRELATED BUSINESS INCOME. THE SOCIETY FOLLOWS THE ACCOUNTING STANDARD REGARDING UNCERTAIN TAX POSITIONS. THE STANDARD PRESCRIBES A MINIMUM THRESHOLD THAT A TAX POSITION IS REQUIRED TO MEET IN ORDER TO BE RECOGNIZED IN THE FINANCIAL STATEMENTS. THE SOCIETY BELIEVES THAT IT HAD NO UNCERTAIN TAX POSITIONS AS DEFINED IN THE STANDARD AND, AS A RESULT, THE STANDARD HAS HAD NO IMPACT ON THE SOCIETY'S FINANCIAL STATEMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleF documentId="RetDoc1040500001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND)</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTS TO RECIPIENTS LOCATED IN REGION</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>TRAVEL ASSISTANCE FOR INDIVIDUALS' MEETING ATTENDANCE</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>96482</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>NORTH AMERICA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTS TO RECIPIENTS LOCATED IN REGION</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>TRAVEL ASSISTANCE FOR INDIVIDUALS' MEETING ATTENDANCE</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>6462</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SOUTH AMERICA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTS TO RECIPIENTS LOCATED IN REGION</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>TRAVEL ASSISTANCE FOR INDIVIDUALS' MEETING ATTENDANCE</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>2405</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <SubtotalOfficesCnt>0</SubtotalOfficesCnt>
      <SubtotalEmployeesCnt>0</SubtotalEmployeesCnt>
      <ContinuationTotalOfficeCnt>0</ContinuationTotalOfficeCnt>
      <ContinuationTotalEmployeeCnt>0</ContinuationTotalEmployeeCnt>
      <TotalOfficeCnt>0</TotalOfficeCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <SubtotalSpentAmt>105349</SubtotalSpentAmt>
      <ContinuationSpentAmt>0</ContinuationSpentAmt>
      <TotalSpentAmt>105349</TotalSpentAmt>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>REIMBURSEMENT OF TRAVEL EXPENSES TO AHS CONFERENCE</TypeOfAssistanceTxt>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND)</RegionTxt>
        <RecipientCnt>66</RecipientCnt>
        <CashGrantAmt>96482</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CASH</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>REIMBURSEMENT OF TRAVEL EXPENSES TO AHS CONFERENCE</TypeOfAssistanceTxt>
        <RegionTxt>NORTH AMERICA</RegionTxt>
        <RecipientCnt>11</RecipientCnt>
        <CashGrantAmt>6462</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CASH</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>REIMBURSEMENT OF TRAVEL EXPENSES TO AHS CONFERENCE</TypeOfAssistanceTxt>
        <RegionTxt>SOUTH AMERICA</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>2405</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CASH</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <TransferToForeignCorpInd>0</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>0</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>0</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>0</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>0</ForeignPartnershipInd>
      <BoycottCountriesInd>0</BoycottCountriesInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>GRANT FUNDS ARE AWARDED TO INDIVIDUALS TO SUPPORT THEIR TRAVEL ACCOMMODATIONS TO ATTEND VARIOUS AMERICAN HEADACHE SOCIETY CONFERENCES AND EVENTS. THESE ARE REFERRED TO AS TRAVEL AWARDS AND ARE MONITORED BY ENSURING THE GRANTEES' ATTENDANCE AT THE EVENT AND VERIFYING THEIR TRAVEL COSTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 3:</FormAndLineReferenceDesc>
        <ExplanationTxt>GRANT AND AWARD EXPENDITURES ARE ACCOUNTED FOR ON THE ACCRUAL BASIS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleF>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>REIMBURSEMENT OF TRAVEL EXPENSES TO AHS CONFERENCE</GrantTypeTxt>
        <RecipientCnt>134</RecipientCnt>
        <CashGrantAmt>94386</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>GRANT FUNDS ARE AWARDED TO INDIVIDUALS TO SUPPORT THEIR TRAVEL ACCOMMODATIONS TO ATTEND VARIOUS AMERICAN HEADACHE SOCIETY CONFERENCES AND EVENTS. THESE ARE REFERRED TO AS TRAVEL AWARDS AND ARE MONITORED BY ENSURING THE GRANTEES' ATTENDANCE AT THE EVENT AND VERIFYING THEIR TRAVEL COSTS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
    <IRS990ScheduleL documentId="RetDoc1042800001">
      <GrntAsstBnftInterestedPrsnGrp>
        <PersonNm>ALLAN PURDY</PersonNm>
        <RelationshipWithOrgTxt>BOARD PRESIDENT (OFFICER AND DIRECTOR)</RelationshipWithOrgTxt>
        <CashGrantAmt>1000</CashGrantAmt>
        <TypeOfAssistanceTxt>CASH</TypeOfAssistanceTxt>
        <AssistancePurposeTxt>TRAVEL REIMBURSEMENT ASSISTANCE PER AHS TRAVEL AWARDS DETERMINATION</AssistancePurposeTxt>
      </GrntAsstBnftInterestedPrsnGrp>
      <GrntAsstBnftInterestedPrsnGrp>
        <PersonNm>DEBORAH FRIEDMAN</PersonNm>
        <RelationshipWithOrgTxt>BOARD MEMBER</RelationshipWithOrgTxt>
        <CashGrantAmt>3000</CashGrantAmt>
        <TypeOfAssistanceTxt>CASH</TypeOfAssistanceTxt>
        <AssistancePurposeTxt>TRAVEL REIMBURSEMENT ASSISTANCE PER AHS TRAVEL AWARDS DETERMINATION</AssistancePurposeTxt>
      </GrntAsstBnftInterestedPrsnGrp>
    </IRS990ScheduleL>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 1</FormAndLineReferenceDesc>
        <ExplanationTxt>BETWEEN MEETINGS OF THE BOARD OF DIRECTORS, THE DAY-TO-DAY AFFAIRS OF AHS MAY BE CONDUCTED BY AN EXECUTIVE COMMITTEE, THE MEMBERSHIP OF WHICH SHALL CONSIST OF THE OFFICERS OF THE CORPORATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOCIETY OUTSOURCES ITS ADMINISTRATIVE AND MANAGEMENT FUNCTIONS TO AN INDEPENDENT MANAGEMENT SERVICE COMPANY, INCLUDING THE POSITION OF EXECUTIVE DIRECTOR (NON-VOTING MEMBER OF THE BOARD) OF THE SOCIETY. THE MANAGEMENT SERVICE COMPANY, TALLEY MANAGEMENT GROUP, LLC, WAS PAID $1,735,726 BY AHS FOR ALL PROFESSIONAL SERVICES PROVIDED, INCLUDING BOTH MANAGEMENT AND ADMINISTRATIVE SERVICES. THIS AMOUNT WAS REPORTED ON FORM 990, PART IX, LINE 11A. THE EXECUTIVE DIRECTOR IS PAID BY THE MANAGEMENT COMPANY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>AHS HAS TWO CLASSES OF VOTING MEMBERS: (1) ACTIVE AND (2) EMERITUS. (1) ACTIVE MEMBERS: ACTIVE MEMBERS SHALL HAVE EARNED AN M.D. OR D.O. DEGREE (OR ITS EQUIVALENT AS DEFINED BY THE AMERICAN MEDICAL ASSOCIATION) OR A DEGREE IN DENTISTRY (D.M.D. OR D.D.S.) OR A DOCTORATE IN PHARMACY (PHARMD) OR A PH.D. IN A HEALTH-RELATED FIELD SUCH AS BIOCHEMISTRY, PHARMACOLOGY OR PSYCHOLOGY. UNDER SPECIAL CIRCUMSTANCES THE MEMBERSHIP COMMITTEE MAY RECOMMEND INDIVIDUALS WITH OTHER ACADEMIC CREDENTIALS FOR CONSIDERATION BY THE BOARD OF DIRECTORS. (2) EMERITUS MEMBERS: EMERITUS MEMBERS SHALL PREVIOUSLY HAVE BEEN ACTIVE MEMBERS. THEY MAY APPLY FOR EMERITUS MEMBERSHIP STATUS BY SUBMITTING A WRITTEN APPLICATION TO THE MEMBERSHIP COMMITTEE EXPLAINING THE REASON FOR THE APPLICATION, NAMELY FULL RETIREMENT FROM PRACTICE. NON-VOTING MEMBERSHIP CLASSES OF AHS ARE: HONORARY, REGENT, ASSOCIATE, TRAINEE AND FELLOW.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>VOTING MEMBERS ELECT THE BOARD OF DIRECTORS FROM THE SLATE OF NOMINEES PROPOSED BY THE NOMINATING COMMITTEE AND APPROVED BY THE EXISTING BOARD OF DIRECTORS. THE VOTING MEMBERS MAY ALSO REMOVE A BOARD MEMBER BY A TWO-THIRDS VOTE OF THE VOTING MEMBERS PRESENT OR BY PROXY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>SUBSTANTIVE CHANGES TO THE BYLAWS REQUIRE AN AFFIRMATIVE VOTE OF TWO-THIRDS OF A QUORUM OF VOTING MEMBERS IN ORDER TO TAKE EFFECT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FORM 990 IS PREPARED BY AN INDEPENDENT ACCOUNTING FIRM. PRIOR TO ITS FILING WITH THE IRS, A COPY OF THE FINAL FORM 990 IS DISTRIBUTED TO EACH VOTING MEMBER OF THE GOVERNING BODY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL BOARD MEMBERS AND MEMBERS INVOLVED IN AHS'S GOVERNANCE MUST PROVIDE COMPLETE, TIMELY, ACCURATE, AND SIGNED DISCLOSURE STATEMENTS ANNUALLY. COMPLIANCE WITH THIS PROCESS IS MANDATORY FOR PARTICIPATION IN AHS ACTIVITIES. THESE DISCLOSURE STATEMENTS ARE REVIEWED BY THE AHS ETHICS COMMITTEE ON AN ANNUAL BASIS. THE COMMITTEE DETERMINES WHETHER OR NOT A CONFLICT EXISTS. IF A CONFLICT IS IDENTIFIED CORRECTIVE ACTION CAN TAKE THE FORM OF DISCLOSURE, BOARD RECUSAL AND/OR REMOVAL.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOCIETY MAKES ITS GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY AND FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>PROGRAM MANAGEMENT &amp; RESEARCH: PROGRAM SERVICE EXPENSES 2,437,402. MANAGEMENT AND GENERAL EXPENSES 0. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 2,437,402. OTHER SERVICES: PROGRAM SERVICE EXPENSES 39,881. MANAGEMENT AND GENERAL EXPENSES 19,970. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 59,851.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>