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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 36-3961145

WORLD FEDERATION OF NEURORADIOLOGICAL SOCIETIES

Also known as CO JAMES B GANTENBERG C H E

Tax-exempt · OAK BROOK, IL 60523

Address and contacts

Address (IRS master file)
820 JORIE BLVD STE 300, OAK BROOK, IL 60523-2281
In care of
% JAMES GANTENBERG
Mailing address (990-N for 2025)
820 JORIE BLVD 300, OAK BROOK IL 60523
Principal officer (990-N for 2025)
TANYA KOSTOVA, 820 JORIE BLVD 300, OAK BROOK IL 60523

What it must file and when

IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. 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, 2026990-N on file
2024June 30, 2025November 17, 2025990-N on file
2023June 30, 2024November 15, 2024990-N on file

File the 2026 990-N for WORLD FEDERATION OF NEURORADIOLOGICAL SOCIETIES

Due November 15, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
36-3961145
Tax-exempt status
501(c)(6): Business league or chamber of commerce
Donations deductible
No
Exempt since
1994
Accounting year ends
June
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: TANYA KOSTOVA
June 30, 2026≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: TANYA KOSTOVA
June 30, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: TANYA KOSTOVA
June 30, 2024≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: TANYA KOSTOVA
June 30, 2023≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: BILL BRADY
June 30, 2021≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: BILL BRADY
June 30, 2020≤ $50,000 receipts––e-Postcard

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 36-3961145).

Questions about WORLD FEDERATION OF NEURORADIOLOGICAL SOCIETIES

What is the EIN of WORLD FEDERATION OF NEURORADIOLOGICAL SOCIETIES?
The employer identification number (EIN) of WORLD FEDERATION OF NEURORADIOLOGICAL SOCIETIES is 36-3961145.
Is WORLD FEDERATION OF NEURORADIOLOGICAL SOCIETIES tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(6) since 1994.
Are donations to WORLD FEDERATION OF NEURORADIOLOGICAL SOCIETIES tax-deductible?
No. The IRS master file says contributions to it are not deductible.
Which annual return does WORLD FEDERATION OF NEURORADIOLOGICAL SOCIETIES file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of WORLD FEDERATION OF NEURORADIOLOGICAL SOCIETIES due?
The return for tax year 2026 (the year ending June 30, 2027) is due November 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did WORLD FEDERATION OF NEURORADIOLOGICAL SOCIETIES last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended June 30, 2026.
Who is the principal officer of WORLD FEDERATION OF NEURORADIOLOGICAL SOCIETIES?
The 990-N for 2025 names TANYA KOSTOVA.

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