Nonprofit · EIN 11-2664726
STONY BROOK RADIATION ONCOLOGY UNIVERSITY FACULTY PRACTICE CORP
Also known as TAMARA WEISS MD
Tax-exempt · STONYBROOK, NY 11790
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| June 30, 2025 | 990 | $3,682,903 | $3,778,029 | -$95,126 | $1,198,859 | $1,198,859 | $0 |
| June 30, 2024 | 990 | $3,557,268 | $4,113,672 | -$556,404 | $1,293,984 | $1,293,984 | $0 |
| June 30, 2023 | 990 | $4,122,906 | $3,931,172 | $191,734 | $1,850,388 | $1,850,388 | $0 |
Financial details: 990 for the year ended June 30, 2025
Revenue
- Contributions, gifts and grants
- $0
- Program service revenue
- $3,670,249
- Investment income
- $0
- Other revenue
- $12,654
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $978,923
- Other salaries and wages
- $1,016,317
- Salaries, compensation and benefits (total)
- $2,239,522
- Professional fundraising fees
- $0
- Program services (functional)
- $3,444,083
- Management and general (functional)
- $333,946
Balance sheet and other
- Total assets, start of year
- $1,293,984
- Total assets, end of year
- $1,198,859
- Total liabilities, end of year
- $1,198,859
- Net assets, end of year
- $0
- Gross receipts
- $3,682,903
- Employees
- 7
- Volunteers
- 0
- Year formed
- 1984
- State of legal domicile
- NY
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 June 30, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation | From related orgs | Other / benefits |
|---|---|---|---|---|---|
| SAMUEL RYU | President & Director Trustee or director, Officer | 40 | $506,007 | $325,761 | $105,425 |
| ALEXANDER STESSIN | DIRECTOR Trustee or director | 40 | $301,207 | $75,436 | $66,253 |
| KARTIK MANI | RADIATION ONCOLOGY Highest-paid employee | 40 | $287,628 | $64,966 | $63,825 |
| ALEXANDER SLADE | RADIATION ONCOLOGY Highest-paid employee | 40 | $258,555 | $0 | $53,839 |
| MARK ASHAMALLA | RADIATION ONCOLOGY Highest-paid employee | 40 | $253,978 | $0 | $53,290 |
| CLARE MORAN | RADIATION ONCOLOGY Highest-paid employee | 40 | $100,613 | $63,259 | $35,044 |
| EDWARD VALENTINE | DIRECTOR/SECRETARY/TREASURER Trustee or director, Officer | 40 | $95,000 | $0 | $22,538 |
990 for the year ended June 30, 2024: 7 people
| Name | Title | Hours / week | Compensation | From related orgs | Other / benefits |
|---|---|---|---|---|---|
| SAMUEL RYU | President & Director Trustee or director, Officer | 40 | $514,576 | $326,763 | $103,405 |
| ALEXANDER STESSIN | DIRECTOR Trustee or director | 40 | $342,322 | $74,701 | $71,006 |
| KARTIK MANI | RADIATION ONCOLOGY Highest-paid employee | 40 | $321,599 | $67,254 | $67,074 |
| MARK ASHAMALLA | RADIATION ONCOLOGY Highest-paid employee | 40 | $278,745 | $64,176 | $61,400 |
| ALEXANDER SLADE | RADIATION ONCOLOGY Highest-paid employee | 40 | $285,767 | $0 | $57,106 |
| EDWARD VALENTINE | DIRECTOR/SECRETARY/TREASURER Trustee or director, Officer | 40 | $243,954 | $0 | $45,997 |
| CLARE MORAN | RADIATION ONCOLOGY Highest-paid employee | 40 | $93,347 | $68,366 | $34,192 |
990 for the year ended June 30, 2023: 7 people
| Name | Title | Hours / week | Compensation | From related orgs | Other / benefits |
|---|---|---|---|---|---|
| SAMUEL RYU | President & Director Trustee or director, Officer | 40 | $519,875 | $293,582 | $95,838 |
| KARTIK MANI | RADIATION ONCOLOGY Highest-paid employee | 40 | $318,317 | $59,109 | $63,259 |
| ALEXANDER STESSIN | DIRECTOR Trustee or director | 40 | $318,782 | $57,180 | $64,310 |
| EDWARD VALENTINE | DIRECTOR/SECRETARY/TREASURER Trustee or director, Officer | 40 | $303,217 | $60,605 | $64,450 |
| ALEXANDER SLADE | RADIATION ONCOLOGY Highest-paid employee | 40 | $284,792 | $56,087 | $60,026 |
| MARK ASHAMALLA | RADIATION ONCOLOGY Highest-paid employee | 40 | $279,705 | $56,087 | $59,426 |
| CLARE MORAN | RADIATION ONCOLOGY Highest-paid employee | 40 | $92,344 | $61,954 | $32,618 |
Address and contacts
- Address (IRS master file)
- PO BOX 1554, STONYBROOK, NY 11790-0988
- In care of
- % SB CLINICAL PRAC MGMT PLAN I
- Principal officer (990 for 2024)
- SAMUEL RYU MD, PO BOX 1554, STONY BROOK, NY 11790
- Signed the 990
- SAMUEL RYU MD, President & Director
- Phone
- (631) 444-2055
- Return prepared by
- ERNST & YOUNG US LLP
Mission
PROVIDE CLINICAL INSTRUCTION TO AND SUPERVISION OF MEDICAL SCHOOL STUDENTS, INTERNS AND RESIDENTS AND, INCIDENT THERETO, RENDERING PROFESSIONAL SERVICES.
Program accomplishments
- THE ORGANIZATION PROVIDES SERVICES IN THE FIELD OF RADIATION ONCOLOGY TO PATIENTS, PROVIDES CLINICAL INSTRUCTION TO AND SUPERVISION OF SCHOOL OF MEDICINE STUDENTS AND HOSPITAL RESIDENTS.Expenses $3,444,083 · revenue $3,670,249
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 June, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | June 30, 2026 | November 16, 2026 | Not due yet |
| 2024 | June 30, 2025 | November 17, 2025 | 990 on file |
| 2023 | June 30, 2024 | November 15, 2024 | 990 on file |
IRS record
- EIN
- 11-2664726
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Organization supporting a government college or university
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 2008
- Accounting year ends
- June
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Health care (E20)
- Assets (IRS master file)
- $1,198,859
- Income (IRS master file)
- $3,682,903
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | June 2025 | $3,682,903 | $3,778,029 | $1,198,859 | IRS |
| 990 | June 2024 | $3,557,268 | $4,113,672 | $1,293,984 | IRS |
| 990 | June 2023 | $4,122,906 | $3,931,172 | $1,850,388 | XML |
| 990 | June 2022 | $3,809,330 | $3,919,586 | $1,658,654 | IRS |
| 990 | June 2021 | – | – | – | IRS |
| 990 | June 2020 | – | – | – | IRS |
| 990 | June 2019 | – | – | – | IRS |
| 990 | June 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 11-2664726).
Questions about STONY BROOK RADIATION ONCOLOGY UNIVERSITY FACULTY PRACTICE CORP
- What is the EIN of STONY BROOK RADIATION ONCOLOGY UNIVERSITY FACULTY PRACTICE CORP?
- The employer identification number (EIN) of STONY BROOK RADIATION ONCOLOGY UNIVERSITY FACULTY PRACTICE CORP is 11-2664726.
- Is STONY BROOK RADIATION ONCOLOGY UNIVERSITY FACULTY PRACTICE CORP tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2008.
- Are donations to STONY BROOK RADIATION ONCOLOGY UNIVERSITY FACULTY PRACTICE CORP tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does STONY BROOK RADIATION ONCOLOGY UNIVERSITY FACULTY PRACTICE CORP 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 STONY BROOK RADIATION ONCOLOGY UNIVERSITY FACULTY PRACTICE CORP due?
- The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did STONY BROOK RADIATION ONCOLOGY UNIVERSITY FACULTY PRACTICE CORP last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended June 2025.
- Who is the principal officer of STONY BROOK RADIATION ONCOLOGY UNIVERSITY FACULTY PRACTICE CORP?
- The 990 for the year ended June 30, 2025 names SAMUEL RYU MD.
- Who are the officers and directors of STONY BROOK RADIATION ONCOLOGY UNIVERSITY FACULTY PRACTICE CORP?
- The 990 for the year ended June 30, 2025 lists 7 people; 7 received compensation from the organization, the highest $506,007 (SAMUEL RYU, President & Director).
- How much revenue does STONY BROOK RADIATION ONCOLOGY UNIVERSITY FACULTY PRACTICE CORP have?
- On its 990 for the year ended June 30, 2025 it reported revenue of $3,682,903, expenses of $3,778,029 and total assets of $1,198,859 at year end.
Other nonprofits in STONYBROOK
- STONY BROOK RADIOLOGY UNIVERSITY FACULTY PRACTICE CORPORATION EIN 11-2548304 · last filed 990 for 2025
- STONY BROOK DERMATOLOGY ASSOCIATES UNIVERSITY FACULTY PRACTICE CORPOR EIN 11-3011790 · last filed 990 for 2025