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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 04-3705551

MOUNTAINS COMMUNITY HOSPITAL MEDICAL STAFF

Tax-exempt · LK ARROWHEAD, CA 92352

Address and contacts

Address (IRS master file)
PO BOX 70, LK ARROWHEAD, CA 92352-0070
In care of
% LAWRENCE R WALKER MD
Mailing address (990-N for 2025)
PO Box 70, Lake Arrowhead CA 92352
Principal officer (990-N for 2025)
Muriel R Phillips, PO Box 70, Lake Arrowhead CA 92352

California records

California keeps its own records of charities and corporations. Search them by EIN 04-3705551 or by the name MOUNTAINS COMMUNITY HOSPITAL MEDICAL STAFF.

Attorney General, Registry of Charities and Fundraisers
Registration status and filed reports (CT-TR-1, RRF-1)

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 MOUNTAINS COMMUNITY HOSPITAL MEDICAL STAFF

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

IRS record

EIN
04-3705551
Tax-exempt status
501(c)(4): Social welfare organization
Donations deductible
No
Exempt since
2003
Accounting year ends
December
Files
Form 990-N (e-Postcard)
Category (NTEE)
Employment (J99)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Muriel R Phillips
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Muriel R Phillips
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Muriel R Phillips
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Muriel R Phillips
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Lawrence R Walker
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Walter M Maier MD
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 04-3705551).

Questions about MOUNTAINS COMMUNITY HOSPITAL MEDICAL STAFF

What is the EIN of MOUNTAINS COMMUNITY HOSPITAL MEDICAL STAFF?
The employer identification number (EIN) of MOUNTAINS COMMUNITY HOSPITAL MEDICAL STAFF is 04-3705551.
Is MOUNTAINS COMMUNITY HOSPITAL MEDICAL STAFF tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(4) since 2003.
Are donations to MOUNTAINS COMMUNITY HOSPITAL MEDICAL STAFF tax-deductible?
No. The IRS master file says contributions to it are not deductible.
Which annual return does MOUNTAINS COMMUNITY HOSPITAL MEDICAL STAFF file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of MOUNTAINS COMMUNITY HOSPITAL MEDICAL STAFF 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 MOUNTAINS COMMUNITY HOSPITAL MEDICAL STAFF 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 MOUNTAINS COMMUNITY HOSPITAL MEDICAL STAFF?
The 990-N for 2025 names Muriel R Phillips.

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