To provide support for the medical needs of the community of Mammoth Lakes which includes grants for the purchase of Mammoth Hospital equipment, promoting good healthcare in the hospital and community, and sponsoring medically related education.
Financial Overview
From 2025 IRS Form 990-PF · View filing
Total Assets
$1.8M
+1.0% YoY
Annual Giving
$230K
-27.8% YoY
Grant Count
1
+0.0% YoY
Avg Grant Size
$230K
-27.8% YoY
About Mammoth Hospital Auxiliary Inc
Based on IRS filings
Mammoth Hospital Auxiliary Inc is a nonprofit organization focused on Health, based in MAMMOTH LAKES, CA. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $1.8M in total assets. In 2025, it awarded 1 grants totaling $230K. Net investment income was $2K.
Focus Areas
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Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
Financial History
Multi-year comparison from IRS filings
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | $1,775,681 | $1,758,964 | $1,775,982 |
| Revenue | $428,491 | $475,962 | $383,409 |
| Expenses | $411,774 | $492,980 | $396,073 |
| Qualifying Distributions | — | — | — |
| Net Investment Income | $1,623 | $8 | $8 |
| Distributable Amount | — | — | — |
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 1 recipients in 2025
Grant Size Distribution
5 grants across all recorded years
Giving History
Grant recipients and amounts by year
Among its reported 2025 grants, the largest include Southern Mono Hospital ($230,329).
| Recipient | Purpose | Amount |
|---|---|---|
| Southern Mono Hospital Mammoth Lakes, CA | Equipment Education & Prgrams | $230,329 |
Leadership & Key People
Officers and directors from IRS filings
Compensation Overview
From 2025 IRS filing
From 2025 filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| Judy Bornfeld | Immed Past President | 1 | — |
| Jan McPherson | Parlimentarian | 1 | — |
| Vicki Mobley | Member at Large | 1 | — |
| Gail Miller | Member at Large | 1 | — |
| Michael Bornfeld | Member at Large | 1 | — |
| Gardiner Miller | Member at Large | 1 | — |
| Lorrie Gould | Vice President | 8 | — |
| Joanne Hunt | Secretary | 8 | — |
| Diane Beglau | Treasurer | 8 | — |
| Karen Curry | President | 12 | — |
Subject Areas
Focus areas based on grantmaking activity
Frequently Asked Questions
What is Mammoth Hospital Auxiliary Inc?
Mammoth Hospital Auxiliary Inc is a nonprofit organization focused on Health, based in MAMMOTH LAKES, CA. It holds $1.8M in total assets as of 2025.
How large is Mammoth Hospital Auxiliary Inc?
As of 2025, Mammoth Hospital Auxiliary Inc holds $1.8M in total assets with $428K in annual revenue. It awarded 1 grants totaling $230K in 2025.
Where does Mammoth Hospital Auxiliary Inc operate?
Mammoth Hospital Auxiliary Inc has awarded grants in California.
What size grants does Mammoth Hospital Auxiliary Inc award?
In 2025, Mammoth Hospital Auxiliary Inc awarded 1 grants totaling $230K — an average of about $230K per grant, based on its IRS Form 990 filings.
What is Mammoth Hospital Auxiliary Inc's EIN?
Mammoth Hospital Auxiliary Inc's EIN (Employer Identification Number) is 95-3141984. IRS Form 990 filing data is available on this page for 2020–2025.
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Data last updated April 2026. Sourced from IRS Form 990-PF filings.
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