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Nonprofit · EIN 11-2552333

STONY BROOK SURGICAL ASSOCIATES UNIVERSITY FACULTY PRACTICE CORP

Tax-exempt · STONY BROOK, NY 11790

Financials

$69M$68.6M2022$65.6M$68.9M2023$70.1M$69.8M2024
Revenue Expenses · by fiscal year end
Financials of STONY BROOK SURGICAL ASSOCIATES UNIVERSITY FACULTY PRACTICE CORP by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
June 30, 2025990$70,135,729$69,828,768$306,961$4,755,657$4,755,657$0
June 30, 2024990$65,571,174$68,901,847-$3,330,673$4,448,696$4,448,696$0
June 30, 2023990$69,046,836$68,607,824$439,012$7,779,369$7,779,369$0
Financial details: 990 for the year ended June 30, 2025

Revenue

Contributions, gifts and grants
$0
Program service revenue
$69,991,388
Investment income
$0
Other revenue
$144,341

Expenses

Grants and similar amounts paid
$0
Compensation of officers, directors and key employees
$3,242,904
Other salaries and wages
$30,600,203
Salaries, compensation and benefits (total)
$37,071,986
Professional fundraising fees
$0
Program services (functional)
$64,204,123
Management and general (functional)
$5,624,645

Balance sheet and other

Total assets, start of year
$4,448,696
Total assets, end of year
$4,755,657
Total liabilities, end of year
$4,755,657
Net assets, end of year
$0
Gross receipts
$70,135,729
Employees
120
Volunteers
0
Year formed
1981
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.

NameTitleHours / weekCompensationFrom related orgsOther / benefits
APOSTOLOS TASSIOPOULOSPresident & Director
Trustee or director, Officer
40$1,454,440$359,647$110,567
SAMI KHANSURGEON
Highest-paid employee
40$1,332,940$92,309$76,972
TARA HUSTONSURGEON
Highest-paid employee
40$1,265,811$93,824$64,909
HENRY TANNOUSSURGEON
Highest-paid employee
40$1,159,542$0$65,129
DUC BUISURGEON
Highest-paid employee
40$1,152,166$0$64,972
JAMES VOSSWINKELSURGEON
Highest-paid employee
40$756,228$316,237$105,138
KONSTANTINOS SPANIOLASDIRECTOR/SECRETARY/TREASURER
Trustee or director, Officer
40$903,776$93,173$75,043
AARON SASSONDIRECTOR
Trustee or director
40$755,783$141,766$79,903
ALEXANDER DAGUMDIRECTOR/SECRETARY/TREASURER (TILL 8/12/24)
Trustee or director, Officer
0$727,910$0$51,678
990 for the year ended June 30, 2024: 9 people
NameTitleHours / weekCompensationFrom related orgsOther / benefits
APOSTOLOS TASSIOPOULOSPresident & Director
Trustee or director, Officer
40$1,154,599$367,221$108,074
HENRY TANNOUSSURGEON
Highest-paid employee
40$1,468,872$0$63,924
ANTONIOS GASPARISSURGEON
Highest-paid employee
40$1,451,524$0$63,137
DUC BUISURGEON
Highest-paid employee
40$1,299,990$92,760$75,196
SAMI KHANSURGEON
Highest-paid employee
40$1,218,043$91,658$75,053
JAMES VOSSWINKELSURGEON
Highest-paid employee
40$721,928$311,909$103,701
KONSTANTINOS SPANIOLASDIRECTOR
Trustee or director
40$951,874$92,435$73,170
ALEXANDER DAGUMDIRECTOR/SECRETARY/TREASURER
Trustee or director, Officer
40$968,994$0$63,396
AURORA PRYORFORMER (till 10/22)
Former
0$69,559$0$30,885
990 for the year ended June 30, 2023: 10 people
NameTitleHours / weekCompensationFrom related orgsOther / benefits
HENRY TANNOUSSURGEON
Highest-paid employee
40$1,384,382$240,626$78,720
ALEXANDER DAGUMDIRECTOR/SECRETARY/TREASURER
Trustee or director, Officer
40$1,127,114$323,975$98,592
APOSTOLOS TASSIOPOULOSPresident & Director
Trustee or director, Officer
40$1,048,469$301,776$98,001
SAMI KHANSURGEON
Highest-paid employee
40$1,129,935$80,805$69,188
ANTONIOS GASPARISSURGEON
Highest-paid employee
40$962,278$150,752$78,281
JAMES VOSSWINKELSURGEON
Highest-paid employee
40$1,008,732$109,428$72,925
TARA HUSTONSURGEON
Highest-paid employee
40$925,050$65,831$58,624
KONSTANTINOS SPANIOLASDIRECTOR (effective 10/21/22)
Trustee or director
40$702,734$81,508$65,993
AURORA PRYORDIRECTOR (till 10/21/22)
Trustee or director
40$499,509$0$45,971
MARK TALAMINIFORMER
Former
40$0$0$21,084

Address and contacts

Address (IRS master file)
PO BOX 1554, STONY BROOK, NY 11790-0988
In care of
% SB CLINICAL PRAC MGMT PLAN I
Principal officer (990 for 2024)
APOSTOLOS TASSIOPOULOS MD, PO BOX 1554, STONY BROOK, NY 11790
Signed the 990
APOSTOLOS TASSIOPOULOS 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.

990 for the year ended June 30, 2025

Program accomplishments

  • THE ORGANIZATION PROVIDES SERVICES IN THE FIELD OF SURGERY TO PATIENTS AND PROVIDES CLINICAL INSTRUCTION TO AND SUPERVISION OF SCHOOL OF MEDICINE STUDENTS AND HOSPITAL RESIDENTS.
    Expenses $64,204,123 · revenue $69,991,388

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 yearYear endedDueIRS public records
2025June 30, 2026November 16, 2026Not due yet
2024June 30, 2025November 17, 2025990 on file
2023June 30, 2024November 15, 2024990 on file

IRS record

EIN
11-2552333
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)
$4,755,657
Income (IRS master file)
$70,135,729

Filing history

FormYear endedRevenueExpensesAssetsReturn
990June 2025$70,135,729$69,828,768$4,755,657IRS
990June 2024$65,571,174$68,901,847$4,448,696IRS
990June 2023$69,046,836$68,607,824$7,779,369XML
990June 2022$57,321,655$59,189,953$7,340,357IRS
990June 2021–––IRS
990June 2020–––IRS
990June 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 11-2552333).

Questions about STONY BROOK SURGICAL ASSOCIATES UNIVERSITY FACULTY PRACTICE CORP

What is the EIN of STONY BROOK SURGICAL ASSOCIATES UNIVERSITY FACULTY PRACTICE CORP?
The employer identification number (EIN) of STONY BROOK SURGICAL ASSOCIATES UNIVERSITY FACULTY PRACTICE CORP is 11-2552333.
Is STONY BROOK SURGICAL ASSOCIATES 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 SURGICAL ASSOCIATES 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 SURGICAL ASSOCIATES 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 SURGICAL ASSOCIATES 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 SURGICAL ASSOCIATES 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 SURGICAL ASSOCIATES UNIVERSITY FACULTY PRACTICE CORP?
The 990 for the year ended June 30, 2025 names APOSTOLOS TASSIOPOULOS MD.
Who are the officers and directors of STONY BROOK SURGICAL ASSOCIATES UNIVERSITY FACULTY PRACTICE CORP?
The 990 for the year ended June 30, 2025 lists 9 people; 9 received compensation from the organization, the highest $1,454,440 (APOSTOLOS TASSIOPOULOS, President & Director).
How much revenue does STONY BROOK SURGICAL ASSOCIATES UNIVERSITY FACULTY PRACTICE CORP have?
On its 990 for the year ended June 30, 2025 it reported revenue of $70,135,729, expenses of $69,828,768 and total assets of $4,755,657 at year end.

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