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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 81-2539442

NATIONAL CENTER FOR PARTICLE THERAPY RESEARCH

Tax-exempt · STAFFORD, TX 77477

Address and contacts

Address (IRS master file)
3118 CHESTERFIELD LN, STAFFORD, TX 77477-4606
In care of
% JOHN ROBB
Mailing address (990-N for 2024)
3118 CHESTERFIELD LN, STAFFORD TX 77477
Principal officer (990-N for 2024)
John R Robb, 3118 CHESTERFIELD LN, STAFFORD TX 77477

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 September, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025September 30, 2026February 16, 2027Not due yet
2024September 30, 2025February 17, 2026990-N on file
2023September 30, 2024February 18, 2025990-N on file

File the 2025 990-N for NATIONAL CENTER FOR PARTICLE THERAPY RESEARCH

Due February 16, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
81-2539442
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
2017
Accounting year ends
September
Files
Form 990-N (e-Postcard)
Category (NTEE)
Medical research (H30)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2024
Officer: John R Robb
September 30, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Reinhard Schulte
September 30, 2024≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Reinhard Schulte
September 30, 2023≤ $50,000 receipts––e-Postcard
990-N for 2021
Officer: John Robb
September 30, 2022≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: John Robb
September 30, 2021≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: John Robb
September 30, 2020≤ $50,000 receipts––e-Postcard
990-N for 2018
Officer: John Robb
September 30, 2019≤ $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 81-2539442).

Questions about NATIONAL CENTER FOR PARTICLE THERAPY RESEARCH

What is the EIN of NATIONAL CENTER FOR PARTICLE THERAPY RESEARCH?
The employer identification number (EIN) of NATIONAL CENTER FOR PARTICLE THERAPY RESEARCH is 81-2539442.
Is NATIONAL CENTER FOR PARTICLE THERAPY RESEARCH tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2017.
Are donations to NATIONAL CENTER FOR PARTICLE THERAPY RESEARCH tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does NATIONAL CENTER FOR PARTICLE THERAPY RESEARCH file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of NATIONAL CENTER FOR PARTICLE THERAPY RESEARCH due?
The return for tax year 2025 (the year ending September 30, 2026) is due February 16, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did NATIONAL CENTER FOR PARTICLE THERAPY RESEARCH last file with the IRS?
The latest return in the IRS public files is the 990-N for 2024 for the year ended September 30, 2025.
Who is the principal officer of NATIONAL CENTER FOR PARTICLE THERAPY RESEARCH?
The 990-N for 2024 names John R Robb.

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