Free & Low-Cost Clinics in Ontario, CA

Who runs these clinics

4 health-center organizations run the 8 clinics in Ontario. Figures are each organization's own federal report for all its sites (HRSA UDS 2025), not this city alone.

• Unicare Community Health Center, INC — 3 sites here, 23 in total. 47,279 patients in 2025, 3% uninsured; also provided dental, mental health, substance use, vision care; 56% of patients had limited English.
• Pomona Community Health Center — 2 sites here, 5 in total. 12,883 patients in 2025, 12% uninsured; also provided dental, mental health, vision care; 25% of patients had limited English.
• San Bernardino Public Health — 2 sites here, 6 in total. 11,875 patients in 2025, 15% uninsured; 42% of patients had limited English.
• Friends Of Family Health Center — 1 site here, 5 in total. 21,983 patients in 2025, 5% uninsured; 30% of patients had limited English.

Health centers near Ontario

• Montclair (3) · 3 mi
• Upland (3) · 3 mi
• Chino (1) · 4 mi
• Pomona (15) · 6 mi
• Jurupa Valley (10) · 10 mi
• San Dimas (2) · 10 mi
• Norco (3) · 11 mi
• Fontana (2) · 12 mi

New to community health centers?

• How the sliding-fee scale works — and how to qualify
• What to bring to your first visit
• Getting care with no insurance

Ontario at a Glance

Every clinic listed above is a federally funded community health center — it treats you with or without insurance, regardless of immigration status, and charges on a sliding-fee scale based on income. Here's what the HRSA and federal NPI registry data shows for Ontario specifically:

• 10,502 patients living in the ZIP codes 91761, 91762 were seen at federally funded health centers in 2025; 8% of them had no insurance.
• 2 of 8 are school-based sites — these usually see enrolled students first, so call before going if you're not a student.
• 8 of 8 clinics list a direct phone number you can call ahead.
• 5 of 8 clinics list a website.
• 6 of 8 are part of a program that reports dental services in federal UDS data (program-level, not per-site — call to confirm dental is offered at this address).
• Reported weekly hours: 7 clinics report 40+ hrs/week, 1 report under 20 hrs/week.
• Provider types on file with the federal NPI registry for clinics in Ontario: Clinic/Center, Community Health (1). Confirmed only where the registry record's name matches the clinic with high confidence — call to verify what a specific site offers.