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Nonprofit · EIN 13-4177240

INTERNATIONAL SOCIETY FOR THE ADVANCEMENT OF SPINE SURGERY ISASS

Tax-exempt · WHEATON, IL 60187

Financials

$1.2M$1.3M2023$1.3M$1.2M2024$1.4M$1.4M2025
Revenue Expenses · by fiscal year end
Financials of INTERNATIONAL SOCIETY FOR THE ADVANCEMENT OF SPINE SURGERY ISASS by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990$1,437,605$1,387,596$50,009$604,066$248,491$355,575
December 31, 2024990$1,309,131$1,236,961$72,170$683,343$377,776$305,567
December 31, 2023990$1,229,554$1,305,667-$76,113$381,768$149,870$231,898
Financial details: 990 for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$150,645
Membership dues
$85,430
Program service revenue
$1,286,960
Investment income
$0
Other revenue
$0

Expenses

Grants and similar amounts paid
$0
Salaries, compensation and benefits (total)
$0
Professional fundraising fees
$0
Program services (functional)
$1,364,427
Management and general (functional)
$23,169

Balance sheet and other

Total assets, start of year
$683,343
Total assets, end of year
$604,066
Total liabilities, end of year
$248,491
Net assets, end of year
$355,575
Gross unrelated business income
$1,553
Gross receipts
$1,437,605
Employees
0
Volunteers
0
Year formed
2001
State of legal domicile
IL

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.

NameTitleHours / weekCompensation
ALEX VACCARO MDPRESIDENT, USA
Trustee or director, Officer
1$0
OSCAR L ALVES MDPRESIDENT - INTERNATIONAL
Trustee or director, Officer
1$0
ROLANDO GARCIA MDPRESIDENT - ELECT USA
Trustee or director, Officer
1$0
SEOK-WOO KIM MDPRESIDENT-ELECT INTL
Trustee or director, Officer
1$0
LUIS M TUMIALAN MDSECRETARY
Trustee or director, Officer
1$0
NEEL ANAND MDTREASURER
Trustee or director, Officer
1$0
ALI ARAGHI DOIMMEDIATE PAST PRESIDENT USA
Trustee or director, Officer
1$0
AVELINO PARAJON MDIMMEDIATE PAST PRESIDENT - INTL
Trustee or director, Officer
1$0
RICHARD ASSAKER MDDIRECTOR AT LARGE
Trustee or director
1$0
ADAM KANTER MDDIRECTOR AT LARGE
Trustee or director
1$0
HAN JO KIM MDDIRECTOR AT LARGE
Trustee or director
1$0
ERIC A POTTS MDDIRECTOR AT LARGE
Trustee or director
1$0
KWANG-SUP SONGDIRECTOR AT LARGE
Trustee or director
1$0
JUAN URIBEDIRECTOR AT LARGE
Trustee or director
1$0
990 for the year ended December 31, 2024: 14 people
NameTitleHours / weekCompensation
MORGAN LORIO MD FACSPRESIDENT - US
Trustee or director, Officer
1$0
MATTHEW SCOTT-YOUNGPRESIDENT - INTERNATIONAL
Trustee or director, Officer
1$0
ALEX VACCARO MDTREASURER
Trustee or director
1$0
MICHAEL WANG MDPAST PRESIDENT, US
Trustee or director, Officer
1$0
HUI LIN YANG MD PHDPAST PRESIDENT-INTERNATIONAL
Trustee or director, Officer
1$0
OSCAR ALVES MDDIRECTOR AT LARGE
Trustee or director, Officer
1$0
ALI ARAGHI DOPRESIDENT-ELECT US
Trustee or director, Officer
1$0
NEEL ANAND MDMEMBER AT LARGE
Trustee or director, Officer
1$0
LUIS M TUMIALAN MDSECRETARY
Trustee or director, Officer
1$0
ROLANDO GARCIA MDDIRECTOR AT LARGE
Trustee or director
1$0
AVELINO PARAJON MDPRESIDEN-ELECT INTERNATIONAL
Trustee or director
1$0
ADAM KANTERMEMBER AT LARGE
Trustee or director
1$0
SEOK-WOO KIM MDMEMBER AT LARGE
Trustee or director
1$0
ERIC A POTTS MDMEMBER AT LARGE
Trustee or director
1$0
990 for the year ended December 31, 2023: 11 people
NameTitleHours / weekCompensation
MASSIMO BALSANO MDPAST PRESIDENT
Trustee or director, Officer
1$0
OSCAR L ALVES MDDIRECTOR AT LARGE
Trustee or director, Officer
1$0
ALEX VACCARO MDDIRECTOR AT LARGE
Trustee or director
1$0
MICHAEL WANG MDPRESIDENT, US
Trustee or director, Officer
1$0
HUI LIN YANG MD PHDPRESIDENT-INTERNATIONAL
Trustee or director, Officer
1$0
MATTHEW SCOTT YOUNG MDPRESIDENT-ELECT, INTERNATIONAL
Trustee or director, Officer
1$0
ALI ARAGHI DOTREASURER
Trustee or director, Officer
1$0
MORGAN LORIO MDPRESIDENT-ELECT, US
Trustee or director, Officer
1$0
LUIS M TUMIALAN MDSECRETARY
Trustee or director, Officer
1$0
ROLANDO GARCIA MDDIRECTOR AT LARGE
Trustee or director
1$0
AVELINO PARAJON MDDIRECTOR AT LARGE
Trustee or director
1$0

Address and contacts

Address (IRS master file)
111 W WESLEY ST, WHEATON, IL 60187-5136
In care of
% KRISTY RADELIFFE
Principal officer (990 for 2025)
ALEX VACCARO MD, 111 W WESLEY STREET SUITE 2, WHEATON, IL 60187
Signed the 990
RICK THIELE, EXECUTIVE DIRECTOR
Phone
(630) 681-1040
Return prepared by
KIBLER ASSOCIATES LTD

Mission

The organization serves as a scientific, and educational society that provides a forum for discussion and understanding of all aspects of basic and clinical science and other fundamental topics to restore and improve motion and function of the spine.

990 for the year ended December 31, 2025

Program accomplishments

  • EDUCATIONAL MEDICAL CONFERENCES AND COURSES TO FACILITATE INFORMATION EXCHANGE RELATING TO ADVANCEMENTS IN SPINAL SURGERY
    Expenses $1,146,292 · revenue $1,132,385
  • THE SOCIETY PUBLISHES THE INTERNATIONAL JOURNAL OF SPINE SURGERY TO PROMOTE AND DISSEMINATE ONLINE THE MOST UP-TO DATE SCIENTIFIC AND CLINICAL RESEARCH REGARDING INNOVATIONS IN SPINAL SURGERY RESULTING IN THE PRESERVATION OF MOTION AND NEW TECHNIQUES AND TECHNOLOGIES IN SPINAL SURGERY, INCLUDING BASIC SCIENCE, BIOLOGICS AND TISSUE ENGINEERING
    Expenses $185,851 · revenue $213,952
  • ADVOCACY: ISASS HOLDS A SEAT ON THE AMA HOUSE OF DELEGATES TO REPRESENT THE INTERESTS OF SPINE SURGERY INCLUDING FAIR PRICING STRUCTURES FOR THE INDUSTRY AND COVERAGE DECISIONS FROM CRITICAL ADVISORY ORGANIZATIONS AND HEALTH INSURANCE PROVIDERS WHICH ARE CRITICAL TO PATIENT CARE. ISASS HAS PUBLISHED NUMEROUS COVERAGE RECOMMENDATIONS WHICH HAVE POSITIVELY AFFECTED COVERAGE OF SPINAL PROCEDURES.
    Expenses $32,284 · revenue $63,500

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 yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990 on file
2024December 31, 2024May 15, 2025990 on file
2023December 31, 2023May 15, 2024990 on file

IRS record

EIN
13-4177240
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
2007
Accounting year ends
December
Files
Form 990 or 990-EZ
Category (NTEE)
Education (B99)
Assets (IRS master file)
$604,066
Income (IRS master file)
$1,437,605

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2025$1,437,605$1,387,596$604,066IRS
990-TDecember 2025–––IRS
990December 2024$1,309,131$1,236,961$683,343IRS
990-TDecember 2024–––IRS
990December 2023$1,229,554$1,305,667$381,768XML
990-TDecember 2023–––IRS
990December 2022$1,159,402$1,087,799$370,151IRS
990-TDecember 2022–––IRS
990December 2021–––IRS
990-TDecember 2021–––IRS
990December 2020–––IRS
990-TDecember 2020–––IRS
990December 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 13-4177240).

Questions about INTERNATIONAL SOCIETY FOR THE ADVANCEMENT OF SPINE SURGERY ISASS

What is the EIN of INTERNATIONAL SOCIETY FOR THE ADVANCEMENT OF SPINE SURGERY ISASS?
The employer identification number (EIN) of INTERNATIONAL SOCIETY FOR THE ADVANCEMENT OF SPINE SURGERY ISASS is 13-4177240.
Is INTERNATIONAL SOCIETY FOR THE ADVANCEMENT OF SPINE SURGERY ISASS tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2007.
Are donations to INTERNATIONAL SOCIETY FOR THE ADVANCEMENT OF SPINE SURGERY ISASS tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does INTERNATIONAL SOCIETY FOR THE ADVANCEMENT OF SPINE SURGERY ISASS 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 SOCIETY FOR THE ADVANCEMENT OF SPINE SURGERY ISASS 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 SOCIETY FOR THE ADVANCEMENT OF SPINE SURGERY ISASS 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 SOCIETY FOR THE ADVANCEMENT OF SPINE SURGERY ISASS?
The 990 for the year ended December 31, 2025 names ALEX VACCARO MD.
Who are the officers and directors of INTERNATIONAL SOCIETY FOR THE ADVANCEMENT OF SPINE SURGERY ISASS?
The 990 for the year ended December 31, 2025 lists 14 people; 0 received compensation from the organization.
How much revenue does INTERNATIONAL SOCIETY FOR THE ADVANCEMENT OF SPINE SURGERY ISASS have?
On its 990 for the year ended December 31, 2025 it reported revenue of $1,437,605, expenses of $1,387,596 and total assets of $604,066 at year end.

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