Civic Intelligence

American Prosthodontic Society

EIN 31-6049753 • 501(c)6 • San Diego, CA

Profile

To promote the advancement of the discipline of prosthodontics by integrating the generalist, specialist and dental laboratory technologist in a manner that will continuously seek improvement of patient treatment.this is accomplished through education and research.

4425 Cass St ASan Diego, CA 92109

www.prostho.org

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

91st percentile

0.55x

Higher debt load relative to assets than 91% of similar nonprofits.

501(c)6 • <$500k nonprofits • Source year 2024

Liabilities / Revenue

89th percentile

0.31x

Higher debt load relative to revenue than 89% of similar nonprofits.

501(c)6 • <$500k nonprofits • Source year 2024

Net Margin

60th percentile

5.6%

Higher net margin than 60% of similar nonprofits.

501(c)6 • <$500k nonprofits • Source year 2024

Top Officer Pay

77th percentile

$0

Higher top officer pay than 77% of similar nonprofits.

Top officer pay equals 0.0% of source-year revenue.

501(c)6 • <$500k nonprofits • Source year 2024

Asset Growth

72nd percentile

12%

Faster asset growth than 72% of similar nonprofits.

501(c)6 • <$500k nonprofits • Annualized from 2023 to 2024

Revenue Growth

71st percentile

13%

Faster revenue growth than 71% of similar nonprofits.

501(c)6 • <$500k nonprofits • Annualized from 2023 to 2024

Balance Sheet
Liabilities / Assets91st percentile

Assets

Up

$187,904

Up $20,347 (+12%) from 2023

Liabilities

Up

$103,549

Up $1,677 (+1.6%) from 2023

Net Assets

Up

$84,355

Up $18,670 (+28%) from 2023

Operations
Liabilities / Revenue89th percentileNet Margin60th percentile

Revenue

Up

$335,548

Up $39,186 (+13%) from 2023

Expenses

Up

$316,878

Up $26,434 (+9.1%) from 2023

Net Income

Up

$18,670

Up $12,752 (+215%) from 2023

Trend Graphs

Balance Sheet Trend

Asset Growth72nd percentile

Grouped bars show assets, liabilities, and net assets across loaded filings.

$300K$200K$100K$0Assets 2019: $207,145Liabilities 2019: $110,746Net Assets 2019: $96,3992019Assets 2020: $135,178Liabilities 2020: $25,634Net Assets 2020: $109,5442020Assets 2021: $153,598Liabilities 2021: $55,641Net Assets 2021: $97,9572021Assets 2022: $182,173Liabilities 2022: $122,406Net Assets 2022: $59,7672022Assets 2023: $167,557Liabilities 2023: $101,872Net Assets 2023: $65,6852023Assets 2024: $187,904Liabilities 2024: $103,549Net Assets 2024: $84,3552024

Highlighted filing

2024

Assets$187,904
Liabilities$103,549
Net Assets$84,355
Open 2024 Filing

Operations Trend

Revenue Growth71st percentile

Revenue, expenses, and net income by year, with the latest filing highlighted.

$400K$300K$200K$100K$0-$100KRevenue 2019: $242,466Expenses 2019: $261,765Net Income 2019: -$19,2992019Revenue 2020: $249,282Expenses 2020: $236,137Net Income 2020: $13,1452020Revenue 2021: $82,199Expenses 2021: $93,786Net Income 2021: -$11,5872021Revenue 2022: $185,694Expenses 2022: $223,884Net Income 2022: -$38,1902022Revenue 2023: $296,362Expenses 2023: $290,444Net Income 2023: $5,9182023Revenue 2024: $335,548Expenses 2024: $316,878Net Income 2024: $18,6702024

Highlighted filing

2024

Revenue$335,548
Expenses$316,878
Net Income$18,670
Open 2024 Filing

Filings

Most recent year

2024 • Form 990Detailed filing. Detailed filing data is available for this year.

Open filing
Assets
$187,904
Liabilities
$103,549
Net assets
$84,355
Revenue
$335,548
Expenses
$316,878
Net income
$18,670
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2024Detailed filing. Detailed filing data is available for this year.$1.88$1.04$0.84$3.36$3.17$0.19
2023XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$1.68$1.02$0.66$2.96$2.90$0.06
2022Detailed filing. Detailed filing data is available for this year.$1.82$1.22$0.60$1.86$2.24$0.38
2021Detailed filing. Detailed filing data is available for this year.$1.54$0.56$0.98$0.82$0.94$0.12
2020XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$1.35$0.26$1.10$2.49$2.36$0.13
2019Detailed filing. Detailed filing data is available for this year.$2.07$1.11$0.96$2.42$2.62$0.19
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jan 1, 2024 to Dec 31, 2024
Signed
Jun 3, 2025
Return Version
2024v5.1
Gross Receipts
$335,548
Mission and Program Overview

Mission

To promote the advancement of the discipline of prosthodontics by integrating the generalist, specialist and dental laboratory technologist in a manner that will continuously seek improvement of patient treatment.this is accomplished through education and research.

To promote and advance prosthodontic dentistry

Balance Sheet Detail
LineBeginningEndChange
Assets
Cash and Non-Interest-Bearing Accounts$162,672$171,588▲ $8,916
Accounts Receivable$1,769$12,519▲ $10,750
Prepaid Expenses and Deferred Charges$2,364$3,797▲ $1,433
Total Assets$167,557$187,904▲ $20,347
Other Assets Total$752$0▼ $752
Liabilities
Deferred Revenue$101,872$103,549▲ $1,677
Total Liabilities$101,872$103,549▲ $1,677
Net Assets / Fund Balance
Net Assets Without Donor Restrictions$65,685$84,355▲ $18,670
Total Net Assets Fund Balance$65,685$84,355▲ $18,670
Total Liabilities and Net Assets / Fund Balance$167,557$187,904▲ $20,347
Compensation and Service Providers
Top Officer Pay77th percentile

Board Members and Trustees

NameTitle
Alon PreiskelImmediate Past President
Carlo PoggioPresident
Nestor SchejtmanPresident Elect
Effrat HabshaVice President
Evangelos RossopoulosExecutive Director
Erna EinarsdottirCouncilor
Jonathan EsquivelCouncilor
Jordan ZanerCouncilor
Sergio FlorencioCouncilor
Thomas GraberCouncilor
Vincenzo CastellanoCouncilor
Konstantinos ChochlidakisSecretary
Maryse ManasseTreasurer
Revenue and Support

Revenue Composition

Contributions and Grants
$26,500
Program Service Revenue
$308,068
Investment Income
$980
Other Revenue
$0
All Other Contributions
$26,500
Change in Net Assets
$18,670
Expenses and Functional Allocation

Major Expense Lines

Line ItemAmount
Other Expenses$316,878
Grants and Similar Amounts Paid$0
Professional Fundraising Fees$0
Salaries, Compensation, and Employee Benefits$0
Total Fundraising Expense$0

Functional Expense Allocation

Line ItemProgramManagementFundraisingTotal
Fees for Services Management---$59,400
All Other Expenses---$40,126
Other Expenses---$19,744
Fees for Services Legal---$16,057
Advertising---$8,745
Insurance---$3,464
Travel---$2,937
Information Technology---$2,155
Fees for Services Accounting---$1,820
Total Functional Expenses$0$0$0$316,878
Fundraising, Events, and Gaming
Fundraising activities
No
Gaming activities
No
Professional fundraiser used
No

Fundraising and Gaming Totals

Line ItemAmount
Professional Fundraising Fees$0
Political and Lobbying Activity
Political campaign activity
No
In-house lobbying only
Yes
Subject to proxy tax
Yes
Governance and Compliance

Governance Checklist

Compiled or reviewed by an accountant
No
Annual disclosure for covered persons
Yes
Business relationship with 35% controlled entity
No
Business relationship with family members
No
Business relationship with organization members
No
Material changes to governing documents
No
Compensation from other sources disclosed
No
CEO compensation reviewed
No
Other officer compensation reviewed
No
Conflict-of-interest policy
Yes
Audited financial statements prepared
No
Key decisions subject to board approval
Yes
Management duties delegated
Yes

Governance Explanations

Form 990, Part VI, Section A, Line 3

“The organization utilizes the services of a management company, res seminars inc, to administer its activities.”

Form 990, Part VI, Section A, Line 6

“The organization has members who have the right to vote on certain governance matters.”

Form 990, Part VI, Section A, Line 7A

“The organization has members who elect officers and council members.”

Form 990, Part VI, Section A, Line 7B

“Decisions regarding dissolution of the organization or amending bylaws are required to be approved by members of the organization.”

Form 990, Part VI, Section B, Line 11B

“The organization provides its board with a copy of form 990 for review and approval prior to filing.”

Form 990, Part VI, Section B, Line 12C

“Officers and councilors are periodically asked to confirm their compliance with the conflict of interest policy.”

Form 990, Part VI, Section C, Line 19

“The organization makes its governing documents available to the public at its administrative offices upon request.”

Filing and Contact Details

Filer

Filer Name
American Prosthodontic Society
EIN
31-6049753
Phone
8582721018
Address
4425 CASS ST A, SAN DIEGO, CA 92109

Signing Officer

Name
Evangelos Rossopoulos
Title
Executive Director
Phone
8582721018
Signed
2025-06-03
Discuss with paid preparer
Yes

Organization Details

Principal Officer
Evangelos Rossopoulos
Formed
1928
Legal Domicile
CA
Voting Board Members
12
Independent Board Members
12
Employees
0
Volunteers
0

Preparer

Firm
Duffy Kruspodin Llp
Address
4225 EXECUTIVE SQUARE SUITE 900, LA JOLLA, CA 92037-1485
Preparer
Andrew Robinson CPA
Phone
8586425050
Supplemental Narrative

Additional Explanations

Form 990, Part IX, Line 24E

“Bank & merchant fees 11,836. Awards 9,392. Printing and publication 5,759. Supplies 3,817. Postage and shipping 2,524. Email distribution 2,352. Signage 2,205. Decor 1,321. Medallions- golden, presidential 495. Org fees (cerp, etc.) 425.”

Raw XML Appendix367 raw XML fields

This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.

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IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine20RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode0RESTRICTED
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IRS990/ScheduleBRequiredInd01
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IRS990ScheduleC/OnlyInHouseLobbyingInd01
IRS990ScheduleC/SubstantiallyAllDuesNondedInd00
IRS990/ScheduleJRequiredInd00
IRS990/ScheduleORequiredInd01
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0THE ORGANIZATION UTILIZES THE SERVICES OF A MANAGEMENT COMPANY, RES SEMINARS INC, TO ADMINISTER ITS ACTIVITIES.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1THE ORGANIZATION HAS MEMBERS WHO HAVE THE RIGHT TO VOTE ON CERTAIN GOVERNANCE MATTERS.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt2THE ORGANIZATION HAS MEMBERS WHO ELECT OFFICERS AND COUNCIL MEMBERS.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt3DECISIONS REGARDING DISSOLUTION OF THE ORGANIZATION OR AMENDING BYLAWS ARE REQUIRED TO BE APPROVED BY MEMBERS OF THE ORGANIZATION.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt4THE ORGANIZATION PROVIDES ITS BOARD WITH A COPY OF FORM 990 FOR REVIEW AND APPROVAL PRIOR TO FILING.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt5OFFICERS AND COUNCILORS ARE PERIODICALLY ASKED TO CONFIRM THEIR COMPLIANCE WITH THE CONFLICT OF INTEREST POLICY.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt6THE ORGANIZATION MAKES ITS GOVERNING DOCUMENTS AVAILABLE TO THE PUBLIC AT ITS ADMINISTRATIVE OFFICES UPON REQUEST.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt7BANK & MERCHANT FEES 11,836. AWARDS 9,392. PRINTING AND PUBLICATION 5,759. SUPPLIES 3,817. POSTAGE AND SHIPPING 2,524. EMAIL DISTRIBUTION 2,352. SIGNAGE 2,205. DECOR 1,321. MEDALLIONS- GOLDEN, PRESIDENTIAL 495. ORG FEES (CERP, ETC.) 425.
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc0FORM 990, PART VI, SECTION A, LINE 3
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc1FORM 990, PART VI, SECTION A, LINE 6
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc2FORM 990, PART VI, SECTION A, LINE 7A
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc3FORM 990, PART VI, SECTION A, LINE 7B
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc4FORM 990, PART VI, SECTION B, LINE 11B
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc5FORM 990, PART VI, SECTION B, LINE 12C
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc6FORM 990, PART VI, SECTION C, LINE 19
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc7FORM 990, PART IX, LINE 24E
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IRS990/SignificantChangeInd00
IRS990/SignificantNewProgramSrvcInd00
IRS990/StatesWhereCopyOfReturnIsFldCd0CA
IRS990/SubjectToExcsTaxNetInvstIncInd00
IRS990/SubjectToProxyTaxInd01
IRS990/SubjToTaxRmnrtnExPrchtPymtInd00
IRS990/TaxablePartyNotificationInd00
IRS990/TaxExemptBondsInd00
IRS990/TerminateOperationsInd00
IRS990/TotalAssetsBOYAmt0167557
IRS990/TotalAssetsEOYAmt0187904
IRS990/TotalAssetsGrp/BOYAmt0167557
IRS990/TotalAssetsGrp/EOYAmt0187904
IRS990/TotalCompGreaterThan150KInd00
IRS990/TotalContributionsAmt026500
IRS990/TotalEmployeeCnt00
IRS990/TotalFunctionalExpensesGrp/TotalAmt0316878
IRS990/TotalGrossUBIAmt00
IRS990/TotalLiabilitiesBOYAmt0101872
IRS990/TotalLiabilitiesEOYAmt0103549
IRS990/TotalLiabilitiesGrp/BOYAmt0101872
IRS990/TotalLiabilitiesGrp/EOYAmt0103549
IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt065685
IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt084355
IRS990/TotalOtherCompensationAmt00
IRS990/TotalProgramServiceRevenueAmt0308068
IRS990/TotalReportableCompFromOrgAmt00
IRS990/TotalRevenueGrp/ExclusionAmt0980
IRS990/TotalRevenueGrp/RelatedOrExemptFuncIncomeAmt0308068
IRS990/TotalRevenueGrp/TotalRevenueColumnAmt0335548
IRS990/TotalRevenueGrp/UnrelatedBusinessRevenueAmt00
IRS990/TotalVolunteersCnt00
IRS990/TotLiabNetAssetsFundBalanceGrp/BOYAmt0167557
IRS990/TotLiabNetAssetsFundBalanceGrp/EOYAmt0187904
IRS990/TotReportableCompRltdOrgAmt00
IRS990/TravelGrp/TotalAmt02937
IRS990/TypeOfOrganizationCorpInd0X
IRS990/UnrelatedBusIncmOverLimitInd00
IRS990/UponRequestInd0X
IRS990/USAddress/AddressLine1Txt04425 CASS ST A
IRS990/USAddress/CityNm0SAN DIEGO
IRS990/USAddress/StateAbbreviationCd0CA
IRS990/USAddress/ZIPCd092109
IRS990/VotingMembersGoverningBodyCnt012
IRS990/VotingMembersIndependentCnt012
IRS990/WebsiteAddressTxt0WWW.PROSTHO.ORG
IRS990/WhistleblowerPolicyInd00
ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd01
ReturnHeader/BusinessOfficerGrp/PersonNm0EVANGELOS ROSSOPOULOS
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0EXECUTIVE DIRECTOR
ReturnHeader/BusinessOfficerGrp/PhoneNum08582721018
ReturnHeader/BusinessOfficerGrp/SignatureDt02025-06-03
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt0AMERICAN PROSTHODONTIC SOCIETY
ReturnHeader/Filer/BusinessNameControlTxt0AMER
ReturnHeader/Filer/EIN0316049753
ReturnHeader/Filer/PhoneNum08582721018
ReturnHeader/Filer/USAddress/AddressLine1Txt04425 CASS ST A
ReturnHeader/Filer/USAddress/CityNm0SAN DIEGO
ReturnHeader/Filer/USAddress/StateAbbreviationCd0CA
ReturnHeader/Filer/USAddress/ZIPCd092109
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ReturnHeader/PreparerFirmGrp/PreparerFirmEIN0954244393
ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt0DUFFY KRUSPODIN LLP
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt04225 EXECUTIVE SQUARE SUITE 900
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm0LA JOLLA
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd0CA
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd0920371485
ReturnHeader/PreparerPersonGrp/PhoneNum08586425050
ReturnHeader/PreparerPersonGrp/PreparationDt02025-05-30
ReturnHeader/PreparerPersonGrp/PreparerPersonNm0ANDREW ROBINSON CPA
ReturnHeader/ReturnTs02025-06-04T00:01:28-05:00
ReturnHeader/ReturnTypeCd0990
ReturnHeader/TaxPeriodBeginDt02024-01-01
ReturnHeader/TaxPeriodEndDt02024-12-31
ReturnHeader/TaxYr02024

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