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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 25-1057860

WASHINGTON COUNTY MEDICAL SOCIETY OF PENNSYLVANIA

Tax-exempt · MECHANICSBURG, PA 17050

Address and contacts

Address (IRS master file)
400 WINDING CREEK BLVD, MECHANICSBURG, PA 17050-1885
Mailing address (990-N for 2025)
400 Winding Creek Blvd, Mechanicsburg PA 17050
Principal officer (990-N for 2025)
Michael Platto, 400 Winding Creek Blvd, Mechanicsburg PA 17050

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 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-N on file
2024December 31, 2024May 15, 2025990-N on file
2023December 31, 2023May 15, 2024990-N on file

File the 2026 990-N for WASHINGTON COUNTY MEDICAL SOCIETY OF PENNSYLVANIA

Due May 17, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
25-1057860
Tax-exempt status
501(c)(6): Business league or chamber of commerce
Donations deductible
No
Exempt since
1969
Accounting year ends
December
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Michael Platto
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Mylaina Sherwood MD
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Mylaina Sherwood MD
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Lisa A Goss MD
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Lisa Goss
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Mylaina Sherwood
December 31, 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 25-1057860).

Questions about WASHINGTON COUNTY MEDICAL SOCIETY OF PENNSYLVANIA

What is the EIN of WASHINGTON COUNTY MEDICAL SOCIETY OF PENNSYLVANIA?
The employer identification number (EIN) of WASHINGTON COUNTY MEDICAL SOCIETY OF PENNSYLVANIA is 25-1057860.
Is WASHINGTON COUNTY MEDICAL SOCIETY OF PENNSYLVANIA tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(6) since 1969.
Are donations to WASHINGTON COUNTY MEDICAL SOCIETY OF PENNSYLVANIA tax-deductible?
No. The IRS master file says contributions to it are not deductible.
Which annual return does WASHINGTON COUNTY MEDICAL SOCIETY OF PENNSYLVANIA file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of WASHINGTON COUNTY MEDICAL SOCIETY OF PENNSYLVANIA 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 WASHINGTON COUNTY MEDICAL SOCIETY OF PENNSYLVANIA last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended December 31, 2025.
Who is the principal officer of WASHINGTON COUNTY MEDICAL SOCIETY OF PENNSYLVANIA?
The 990-N for 2025 names Michael Platto.

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