39th Avenue Campus - Outpatient Clinics

39th Avenue Campus - Outpatient Clinics is a community health center dental clinic in San Mateo, CA, operated by San Mateo County Health, which runs 3 clinics in California.

The health center is open about 40 hours a week, though dental sessions are usually a subset of that.

Clinic Details

Planning Your Visit

222 W 39th Ave, San Mateo, CA 94403

The published number is 650-573-2222. It may be a shared scheduling line. Say which site you mean and that you want dental rather than medical, or you can be booked into the wrong queue.

Things to settle on the phone first: the dental hours, and which days appointments run, whether new dental patients are being taken, and the current wait, what a first visit costs, before and after any discount, whether your insurance or Medicaid dental plan is accepted, by plan name, and what to bring for the sliding fee application.

Dental Services

This clinic has not published a list of the treatments it provides. Expect the routine treatments to be available. The question worth asking is about the expensive ones: root canals, dentures and oral surgery are handled in house at some health centers and referred out at others.

Costs and Coverage

Charges are set against household income and household size rather than a fixed fee schedule. Where the thresholds fall is decided by San Mateo County Health, so what a friend paid elsewhere is not a guide. Ask them to run your household through it before you commit to a treatment plan. Our guide to applying for the discount lists the documents to bring.

No Medicaid registration has been recorded for this clinic, which is not the same as Medicaid being refused. What California Medicaid covers for adults is a state decision and has been cut and restored in several states; for children the benefit is required nationally. The Medicaid dental page covers how to check yours.

Dental Providers at This Clinic

Alongside general dentistry, providers registered in oral and maxillofacial surgery, for surgical extractions and jaw procedures and pediatric dentistry, for children practice at this address. That is not the same as the clinic taking new patients for those treatments, or the discount covering them, so name the treatment when you call.

Common Questions

Size of the Dental Service

San Mateo County Health provided 4,068 dental visits and 1,054 dental patients in 2025, with the equivalent of 2 full-time dental staff. This indicates a moderate dental service. Appointment capacity may be limited.

Figures describe the operating organization as a whole, across all of its clinics.

Other Clinics Operated by San Mateo County Health

San Mateo County Health operates 2 other clinics in 2 other communities in California. Asking the scheduling line which site can see you soonest is usually faster than calling each in turn; the shortest wait is not always the closest clinic. The income assessment usually transfers between sites in the same organization, which saves repeating the paperwork. What is treated at one site is no guide to another, so confirm with the clinic you actually intend to visit.

Other Dental Clinics Nearby

Distances are as the crow flies. Wait times are set clinic by clinic, so ask each one rather than assuming.

• Fair Oaks Health Center — Redwood City, about 6.2 miles away
• Gardner Packard Children's Health Center - Suite 102 — Atherton, about 6.8 miles away
• Gardner Packard Children's Health Center — Atherton, about 6.8 miles away
• Ravenswood Family Dentistry — East Palo Alto, about 9.9 miles away