Mobile Unit #6879
Part of County of Contra Costa
Contact & location
Address: 4100 Alhambra Avenue, Martinez, CA 94553
Phone: 925-313-6250
Operating hours: about 40 hours per week — call for the daily schedule
County: Contra Costa County
Treats everyone, insured or not — you do not need to be a US citizen. By law this federally funded health center serves all patients regardless of ability to pay, on a sliding-fee scale set by your income and family size. Call ahead to confirm hours, which services this site offers, and what to bring.
About this location
School-based site.Health centers inside schools usually see enrolled students first; some also see students’ families, staff, or the public. If you are not a student here, call before you go.
Mobile clinic.This is a van or mobile unit. The address is usually its home base or one regular stop. Call to find out where it will be and when.
- Open year-round (HRSA site record).
- Part of the federal Health Center Program at this location since 2013.
About County of Contra Costa
County of Contra Costa reported caring for 24,998 patients across all its sites in 2025, and runs 33 locations listed in this directory.
- Insurance: 2% had no insurance, 79% had Medicaid or CHIP, 16% had Medicare, 3% had private insurance.
- 98% of patients with a known income earned at or below twice the federal poverty level (88% at or below it) — the range where sliding-fee discounts apply.
- Services patients received in 2025: medical care (21,778), dental care (1,363), mental health care (5,322), substance use treatment (1,192), vision care (1,930), support services (case management, transport, enrollment help) (4,310).
- 29% of patients had limited English. If you prefer another language, ask for an interpreter when you call.
- Patients included 24,998 people experiencing homelessness, 497 veterans, 434 patients at school-based sites.
Source: HRSA Uniform Data System (UDS) 2025, as reported by County of Contra Costa for all of its sites combined — not specific to one address. Call to confirm what this location offers.
Other County of Contra Costa locations
Same organization and sliding-fee policy — useful if this site is closed, full, or doesn't offer the service you need.
- Mobile Unit #6878 — 4100 Alhambra Avenue, Martinez · same area · 40 hrs/week · school-based · mobile
- Contra Costa County Health Services Dept. — 50 Douglas Dr, Martinez · 0.3 mi · 40 hrs/week
- Mobile Dental Clinic — Multiple locationsContra Costa County, Martinez · 0.9 mi · 40 hrs/week · mobile
- Martinez Health Center - Family Medicine 2A — 2500 Alhambra Ave, Martinez · 1.0 mi · 68 hrs/week
- Martinez Health Center - Specialty 1A — 2500 Alhambra Ave, Martinez · 1.0 mi · 60 hrs/week
- Martinez Health Center -Specialty 2A — 2500 Alhambra Ave, Martinez · 1.0 mi · 60 hrs/week
Other health centers nearby
Run by different organizations, within 10 miles. All serve patients regardless of ability to pay.
- La Clinica Monument — Concord, CA · 5.9 mi · La Clinica De La Raza, INC.
- LifeLong Rodeo Health Center — Rodeo, CA · 7.8 mi · Lifelong Medical Care
- OHI - Grace Patterson Elementary — Vallejo, CA · 8.3 mi · La Clinica De La Raza, INC.
- LifeLong West County Health Center - Pinole — Pinole, CA · 9.6 mi · Lifelong Medical Care
- OHI - Virginia Head Start — Vallejo, CA · 9.6 mi · La Clinica De La Raza, INC.
New here? What to bring · How the sliding-fee scale works
Listing sourced from the HRSA Health Center Program, refreshed 2026-10-05. Directory information only, not medical advice. Spotted a mistake? Use the feedback box below to let us know.
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