Nonprofit · EIN 36-4712561
INTERNATIONAL ANAL NEOPLASIA SOCIETY
Tax-exempt · LEESBURG, VA 20177
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $507,637 | $518,320 | -$10,683 | $460,484 | $49,756 | $410,728 |
| December 31, 2024 | 990 | $285,159 | $255,134 | $30,025 | $477,165 | $65,681 | $411,484 |
| December 31, 2023 | 990 | $549,514 | $436,622 | $112,892 | $460,657 | $47,826 | $412,831 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $21,825
- of which government grants
- $20,825
- Program service revenue
- $472,525
- Investment income
- $13,287
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $0
- Other salaries and wages
- $190,132
- Salaries, compensation and benefits (total)
- $208,355
- Professional fundraising fees
- $0
- Accounting fees
- $3,395
- Travel
- $20,998
- Program services (functional)
- $518,320
Balance sheet and other
- Total assets, start of year
- $477,165
- Total assets, end of year
- $460,484
- Total liabilities, end of year
- $49,756
- Net assets, end of year
- $410,728
- Net assets without donor restrictions
- $273,847
- Net assets with donor restrictions
- $136,881
- Gross receipts
- $507,637
- Employees
- 4
- Volunteers
- 40
- Year formed
- 2012
- State of legal domicile
- MD
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| TROY GRENNAN MD FRCPC | PRESIDENT EL Trustee or director, Officer | 2 | $0 |
| MICHELLE KHAN | SECRETARY Trustee or director, Officer | 2 | $0 |
| DAVID CHROMY MD | BOARD MEMBER Trustee or director | 2 | $0 |
| ISABELLA ROSA-CUNHA MD | BOARD MEMBER Trustee or director | 2 | $0 |
| JOSEPH TERLIZZI MD | BOARD MEMBER Trustee or director | 2 | $0 |
| JUAN DE LA OSSA MD | BOARD MEMBER Trustee or director | 2 | $0 |
| LUIS BARROSO MD | PAST PRESIDE Trustee or director, Officer | 2 | $0 |
| NAOKATSU ANDO MD | BOARD MEMBER Trustee or director | 2 | $0 |
| RICHARD TURNER MD | TREASURER Trustee or director, Officer | 2 | $0 |
| ROBERT PAOLO IACHETTA MD | BOARD MEMBER Trustee or director | 2 | $0 |
| URSKA KOGOSEK MD | BOARD MEMBER Trustee or director | 2 | $0 |
| TAMZIN CUMING MBBS FRCS MED | PRESIDENT Trustee or director, Officer | 2 | $0 |
990 for the year ended December 31, 2024: 11 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| NELSON CAVALLARI | BOARD MEMBER Trustee or director | 3 | $0 |
| MEGAN CLARKE | BOARD MEMBER Trustee or director | 3 | $0 |
| TROY GRENNAN MD FRCPC | SECRETARY-TR Trustee or director, Officer | 3 | $0 |
| MICHAEL GAISA | BOARD MEMBER Trustee or director | 3 | $0 |
| MICHELLE KHAN | BOARD MEMBER Trustee or director | 3 | $0 |
| URSKA KOGOVSEK | BOARD MEMBER Trustee or director | 3 | $0 |
| LUIS BARROSO MD | PRESIDENT Trustee or director, Officer | 3 | $0 |
| RICHARD HILLMAN MD | IMMEDIATE PA Trustee or director, Officer | 3 | $0 |
| TAMZIN CUMING MBBS FRCS MED | VICE PRESIDE Trustee or director, Officer | 3 | $0 |
| JOSEPH TERLIZZI | BOARD MEMBER Trustee or director | 3 | $0 |
| ANDREW TIN YAU WONG | BOARD MEMBER Trustee or director | 3 | $0 |
990 for the year ended December 31, 2023: 11 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| NELSON CAVALLARI | BOARD MEMBER Trustee or director | – | $0 |
| MEGAN CLARKE | BOARD MEMBER Trustee or director | – | $0 |
| TROY GRENNAN MD FRCPC | SECRETARY-TR Trustee or director, Officer | – | $0 |
| MICHAEL GAISA | BOARD MEMBER Trustee or director | – | $0 |
| MICHELLE KHAN | BOARD MEMBER Trustee or director | – | $0 |
| URSKA KOGOVSEK | BOARD MEMBER Trustee or director | – | $0 |
| LUIS BARROSO MD | PRESIDENT Trustee or director, Officer | – | $0 |
| RICHARD HILLMAN MD | IMMEDIATE PA Trustee or director, Officer | – | $0 |
| TAMZIN CUMING MBBS FRCS MED | VICE PRESIDE Trustee or director, Officer | – | $0 |
| JOSEPH TERLIZZI | BOARD MEMBER Trustee or director | – | $0 |
| ANDREW TIN YAU WONG | BOARD MEMBER Trustee or director | – | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 1543, LEESBURG, VA 20177-1543
- In care of
- % ASCCP
- Principal officer (990 for 2025)
- LUIS BARROSO MD, PO BOX 1543, LEESBURG, VA 20177
- Signed the 990
- LUIS BARROSO MD, PAST PRESIDENT
- Phone
- (720) 421-5100
- Website
- HTTPS://IANS.WILDAPRICOT.ORG
- Return prepared by
- MCNURLIN HITCHCOCK & ASSOCIATES PC
Mission
IANS MISSION IS TO PROVIDE A FORUM FOR INDIVIDUALS WITH A BROAD SPECTRUM OF BACKGROUND, VIEWPOINTS AND GEOGRAPHIC ORIGIN, AN EXCHANGE OF IDEAS AND DISSEMINATION OF KNOWLEDGE REGARDING THE PATHOGENESIS, DIAGNOSIS, TREATMENT AND PREVENTION OF ANAL NEOPLASIA.
Program accomplishments
- SCIENTIFIC MEETING - THE 2025 EVENT SHOWCASED INVITED PRESENTATIONS, ABSTRACTS, SMALL GROUP SESSIONS AND A LIVELY SCIENTIFIC INTERCHANGE ON ANAL HPV INFECTION, ANAL SQUAMOUS INTRAEPITHELIAL LESIONS AND ANAL CANCER.Expenses $285,074 · revenue $242,680
- ADVANCED HRA COURSE - THE IANS VIRTUAL ADVANCED HIGH RESOLUTION ANOSCOPY (HRA) COURSE EXPANDS THE ABILITY OF PROVIDERS TO RECOGNIZE AND TREAT ANAL SQUAMOUS INTRAEPITHELIAL LESIONS IN ORDER TO BUILD EXPERTISE AND OPTIMIZE THE MANAGEMENT OF COMPLEX CASES.Expenses $22,740 · revenue $28,550
- STANDARD HRA COURSE - THE HIGH RESOLUTION ANOSCOPY (HRA) COURSE SERVES AS A BASIC INTRODUCTION FOR ALL CLINICIANS INTERESTED IN PROVIDING THIS SPECIALIZED PROCEDURE AND WHO WORK WITH POPULATIONS UNDER CONSIDERATION FOR ANAL CANCER SCREENING.Expenses $30,602 · revenue $124,595
- MEMBERSHIP DUES PROVIDE MEMBERS WITH THE OPPORTUNITY TO PARTICIPATE IN IANS COMMITTEES AND DEVELOP IANS PROGRAMS AND ACTIVITIES, OPPORTUNITY TO VOTE IN IANS ELECTIONS, ELIGIBILITY TO JOIN THE IANS BOARD OF DIRECTORS, DISCOUNTED REGISTRATION FOR ANNUAL IANS SCIENTIFIC MEETING, AND ACCESS TO FREE WEBINARS.Expenses $179,904 · revenue $111,812
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 36-4712561
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (170(b)(1)(A)(vi))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 2012
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Voluntary health associations and medical disciplines (G12)
- Assets (IRS master file)
- $460,484
- Income (IRS master file)
- $507,637
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $507,637 | $518,320 | $460,484 | XML |
| 990 | December 2024 | $285,159 | $255,134 | $477,165 | XML |
| 990 | December 2023 | $549,514 | $436,622 | $460,657 | XML |
| 990 | December 2022 | $326,138 | $343,111 | $337,598 | IRS |
| 990-EZ | December 2021 | – | – | – | IRS |
| 990-EZ | December 2020 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 36-4712561).
Questions about INTERNATIONAL ANAL NEOPLASIA SOCIETY
- What is the EIN of INTERNATIONAL ANAL NEOPLASIA SOCIETY?
- The employer identification number (EIN) of INTERNATIONAL ANAL NEOPLASIA SOCIETY is 36-4712561.
- Is INTERNATIONAL ANAL NEOPLASIA SOCIETY tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2012.
- Are donations to INTERNATIONAL ANAL NEOPLASIA SOCIETY tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does INTERNATIONAL ANAL NEOPLASIA SOCIETY file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of INTERNATIONAL ANAL NEOPLASIA SOCIETY due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did INTERNATIONAL ANAL NEOPLASIA SOCIETY last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of INTERNATIONAL ANAL NEOPLASIA SOCIETY?
- The 990 for the year ended December 31, 2025 names LUIS BARROSO MD.
- Who are the officers and directors of INTERNATIONAL ANAL NEOPLASIA SOCIETY?
- The 990 for the year ended December 31, 2025 lists 12 people; 0 received compensation from the organization.
- How much revenue does INTERNATIONAL ANAL NEOPLASIA SOCIETY have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $507,637, expenses of $518,320 and total assets of $460,484 at year end.
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All nonprofits in LEESBURG · Virginia · Voluntary health associations and medical disciplines