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Compensation 990 is an independent service that uses public IRS Form 990 filings as its source data. We clean and standardize this information, but the original filings may contain errors or omissions. Years on this site refer to the organization’s fiscal year end date on the filing.

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Organizations Health Care Mathiesen Memorial Health Clinic

Mathiesen Memorial Health Clinic

Fiscal year ending 2024. Filed on November 17, 2025.

PO Box 535
Jamestown, California 95327

Mathiesen Memorial Health Clinic (EIN: 26-0895668) has filed an IRS Form 990 since at least fiscal year 2016. In its fiscal year 2024 IRS Form 990 filing, Mathiesen Memorial Health Clinic, a 501(c)(3) charitable organization, reported compensation for 8 out of 105 total employees. Among the employees shown here, the average compensation is $290,021. The highest compensated employee at Mathiesen Memorial Health Clinic is Gina Valente-Moore with fiscal year 2024 compensation of $397,324.

Revenue, expenses, and employee compensation

Revenue

$15,182,356

Expenses

$13,755,867

Employee compensation

$10,308,286
Revenue, expenses, and employee compensation over time

Reported Compensated Employees

Gina Valente-Moore
Fnpcoo
$397,324
$355,888 No related comp$41,436
John Vass
Chief Executive Officer
$381,261
$346,808 No related comp$34,453
Tom King
Family Nurse Practitioner
$300,485
$264,723 No related comp$35,762
David Demattei
Physician Assistant
$296,689
$261,139 No related comp$35,550
Taya Stanley
Acupunturist
$280,335
$244,532 No related comp$35,803
Nathaniel Methot
Family Nurse Practitioner
$257,185
$222,454 No related comp$34,731
Theresa Sales
Family Nurse Practitioner
$225,246
$200,069 No related comp$25,177
Amy Curtin
Chief Financial Officer
$181,641
$150,491 No related comp$31,150

Benchmark Employee Compensation

Non-Employee Board Members

Alyssa Cogburn
Health Board Member
Joseph Mathiesen-Powell
Health Board Chairman
Melissa Mathiesen Powell
Secretary
Raymond Mathiesen
Vice Chair
Tony Erwin
Health Board Member

Mission Statement

TO PROVIDE NEEDED COMPREHENSIVE HEALTH SERVICES TO THE TRIBAL MEMBERSHIP, TRIBAL EMPLOYEES, NON-AFFILIATED AMERICAN INDIANS RESIDING IN TOLUMNE COUNTY AND RESIDENTS IN THE GREATER JAMESTOWN, CALIFORNIA AREA

Revisions to this organization profile

November 17, 2025:
2024 Mathiesen Memorial Health Clinic 990 filed
November 8, 2024:
2023 Mathiesen Memorial Health Clinic 990 filed
October 26, 2023:
2022 Mathiesen Memorial Health Clinic 990 filed

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