Free & Low-Cost Clinics in Ontario, CA

8 community health centers · Data from HRSA, refreshed 2026-08-12

These are the 8 community health centers in Ontario. Each one treats patients with or without insurance and charges on a sliding-fee scale based on income. Call ahead to confirm hours, services, and whether you need an appointment.

Clinics in Ontario

• Friends of Family Health Center - 1129 W. 4th Street, Ontario

  1129 W Fourth St, Ontario, CA 91762

  📞 909-363-9300 40 hrs/week Sliding-fee scale

• Ontario

  1556 S Sultana Av, Ontario, CA 91761

  📞 909-630-7927 70 hrs/week Sliding-fee scale

• Ontario Archibald

  2680 E Riverside Dr, Ontario, CA 91761

  📞 909-630-7939 74 hrs/week Sliding-fee scale

• Ontario Health Center

  150 E Holt Blvd, Ontario, CA 91761

  📞 909-458-9447 42 hrs/week Sliding-fee scale

• Ontario Maple Head Start

  555 W Maple St, Ontario, CA 91762

  📞 909-984-4117 4 hrs/week Sliding-fee scale

• Unicare Community Health Center - Ontario 1151

  1151 E Walnut St, Ontario, CA 91761

  📞 909-467-1425 40 hrs/week Sliding-fee scale

• Unicare Community Health Center, Inc.

  437 N Euclid Ave, Ontario, CA 91762

  📞 909-988-2555 40 hrs/week Sliding-fee scale

• Unicare-Ontario HQ expanded

  123 W E St, Ontario, CA 91762

  📞 909-988-2555 40 hrs/week Sliding-fee scale

Other Cities in California

• Los Angeles (294)
• San Diego (98)
• Oakland (84)
• San Francisco (84)
• San Jose (73)
• Fresno (67)
• Sacramento (66)
• Bakersfield (48)

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

Frequently Asked Questions

Can I go to a clinic in Ontario without insurance?

Yes. Every clinic on this page is a federally funded community health center, so it must treat you whether or not you have insurance. You will be charged on a sliding-fee scale based on your income and family size, and no one is turned away for being unable to pay.

How much does a visit cost with no insurance?

It depends on your income. Community health centers use a sliding-fee discount scale set by federal rules. If your income is at or below the federal poverty level, you pay only a small nominal fee. As income rises, the discount steps down. Bring proof of income and household size to set your rate.

What services do clinics in Ontario offer?

Most community health centers offer primary medical care, and many also provide dental, mental-health, substance-use, and pharmacy services. Services vary by site, so call the clinic to confirm what it offers before you go.

Do I need to be a US citizen to be seen?

No. Community health centers serve all patients regardless of immigration status. You do not need to be a citizen or have a Social Security number to receive care.

Clinic data from the HRSA Health Center Program, refreshed 2026-08-12. Directory information only, not medical advice. View all clinics in California →

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