Data / Nonprofits / California / San Marcos / Health care
Health care nonprofits in San Marcos, CA: 7 registered with the IRS
7 health care nonprofits are registered with the IRS in San Marcos, CA, 7 of them 501(c)(3) charities; the 5 that report revenue took in $67.3 million. The largest by revenue: Gary and Mary West Senior Services Inc ($47.3 million), California State University San Marcos Foundation ($12.4 million), Mountain Shadows Ancillary Servicesinc ($7.4 million).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Gary and Mary West Senior Services Inc | 501(c)(3) | 2017 | $47.3 million | $17.6 million | 2024-12 |
| California State University San Marcos Foundation | 501(c)(3) | 2009 | $12.4 million | $72 million | 2025-06 |
| Mountain Shadows Ancillary Servicesinc | 501(c)(3) | 2009 | $7.4 million | $10.2 million | 2025-12 |
| Healing Odyssey Inc | 501(c)(3) | 2015 | $56,376 | $76,621 | 2025-12 |
| Summit for Stem Cell Foundation | 501(c)(3) | 2017 | $48,496 | $132,237 | 2025-12 |
| Informed Action Harm Reduction | 501(c)(3) | 2020 | $0 | $0 | 2024-12 |
| Trachs and Tubes Foundation Inc | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
Other causes in San Marcos, CA
- Religion-related 50
- Education 49
- Human services 30
- Recreation and sports 26
- Philanthropy, voluntarism and grantmaking foundations 20
- Arts, culture and humanities 19
- Youth development 13
- Public and societal benefit 9
- Animal-related 8
- Mental health and crisis intervention 7
- Environment 6
- Housing and shelter 5
- International, foreign affairs and national security 4
- Community improvement and capacity building 4
- Employment 4
- Diseases, disorders and medical disciplines 3
- Public safety, disaster preparedness and relief 3
- Crime and legal-related 3
Every nonprofit in San Marcos, CA · Health care nonprofits across the state · Nonprofits in every city of the state
Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.