Mary Isaak Homeless Shelter Clinic — Petaluma, CA
Mary Isaak Homeless Shelter Clinic is a community health center clinic at 900 Hopper St, Petaluma, CA 94952, open 21.5 hours a week. The typical California clinic is open 40 hours a week. It is run by Petaluma Health Center, Inc., which serves 41,287 patients across 8 clinic locations.
- Address: 900 Hopper St, Petaluma, CA 94952 · Directions
- Phone: (707) 559-7500
- Website: www.phealthcenter.org
- Weekly hours: 21.5 (California clinic median: 40)
- Operated by: Petaluma Health Center, Inc. (federally qualified health center)
- Care offered by this health center: primary care, dental care, mental health care, substance use treatment, eye exams, children’s checkups, women’s health, and telehealth
Care and screenings at Petaluma Health Center, Inc.
Patients came to Petaluma Health Center, Inc. for these services in 2025. The numbers cover the whole health center, not only this clinic.
| Service | Patients | What it counts |
|---|---|---|
| Dental care | 15,094 | patients had dental exams |
| Mental health care | 9,258 | patients treated for depression or anxiety |
| Substance use treatment | 1,744 | patients in treatment |
| Eye exams | 4,277 | patients had eye exams |
| Well-child visits | 4,843 | children had checkups |
| Flu shots | 8,196 | patients vaccinated |
| Cervical cancer screening | 2,901 | patients tested |
| Breast cancer screening | 3,259 | patients screened |
| Family planning | 2,461 | patients served |
| Diabetes care | 3,788 | patients with diabetes |
| Blood pressure care | 5,925 | patients with hypertension |
| Asthma care | 2,344 | patients with asthma |
| HIV testing | 1,928 | patients tested |
| Hepatitis C testing | 1,467 | patients tested |
| Childhood lead tests | 863 | children tested |
Petaluma Health Center, Inc. also provides care by telehealth.
Who Petaluma Health Center, Inc. serves
41,287 patients used Petaluma Health Center, Inc. in 2025. 75% live at or below the poverty line and 96% are at or below twice the poverty line. 722 patients were experiencing homelessness and 343 were veterans.
| Measure | This center | CA median | U.S. median | vs CA |
|---|---|---|---|---|
| Patients at or below the poverty line | 75% | 75% | 65% | In line |
| Patients at or below 200% of the poverty line | 96% | 95% | 92% | In line |
| Measure | This center | CA median | U.S. median | vs CA |
|---|---|---|---|---|
| Uninsured patients | 8% | 8% | 14% | In line |
| Medicaid or CHIP patients | 66% | 71% | 42% | −6 pts |
| Medicare patients | 11% | 8% | 11% | +3 pts |
| Privately insured patients | 15% | 10% | 24% | +6 pts |
Quality of care at Petaluma Health Center, Inc.
Petaluma Health Center, Inc. is at or above the California median on 4 of 7 preventive-care measures. Higher is better on every line.
| Measure | This center | CA median | U.S. median | vs CA |
|---|---|---|---|---|
| Adults with high blood pressure under control | 71% | 68% | 68% | +3 pts |
| Women 52–74 screened for breast cancer | 68% | 59% | 54% | +8 pts |
| Women 24–64 screened for cervical cancer | 79% | 60% | 54% | +19 pts |
| Adults 46–75 screened for colorectal cancer | 60% | 44% | 44% | +16 pts |
| Patients 12+ screened for depression | 60% | 68% | 77% | −9 pts |
| Adults assessed for tobacco use | 84% | 86% | 86% | −2 pts |
| High-risk adults on statin therapy | 77% | 79% | 79% | −2 pts |
Staffing at Petaluma Health Center, Inc.
The health center employs 469 full-time-equivalent staff, including 59 physicians, nurse practitioners, physician assistants and midwives, 55 dental staff and 14 mental health staff. That is 699 patients per clinical provider against the California median of 869 and the U.S. median of 930. Patients made 225,992 visits, about 5.5 per patient.
Patients from ZIP 94952
5,829 Petaluma Health Center, Inc. patients live in ZIP 94952, and 8% of them are uninsured. Other health centers also serve this ZIP:
- West County Health Centers, Inc. — 123 patients from 94952
- Marin Community Clinic — 103 patients from 94952
- Alliance Medical Center, Inc. — 61 patients from 94952
- Sonoma Valley Community Health Center — 33 patients from 94952
Community health centers near Mary Isaak Homeless Shelter Clinic
SVCHC Vision Center
Sonoma Valley Community Health Center
Marin Community Clinic - Novato
Marin Community Clinic - Novato South
Sebastopol Community Health Center Building #2
More Petaluma Health Center, Inc. locations
Rohnert Park Community Acupuncture
Rohnert Park Health Center
Point Reyes Community Health Center
More community health centers in Petaluma and across California.