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County Of San Mateo

Group Practice·336 providers

22 W 39TH AVE, San Mateo, CA 944034364

7 Locations
12 Specialties
36 Insurance Plans

Contact County Of San Mateo

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22 W 39TH AVE, San Mateo, CA 944034364

Providers

336

Locations

7

Specialties

12

Insurance Plans

36

About County Of San Mateo

Background and practice information

County of San Mateo is a large multi-specialty medical practice based in San Mateo, CA, with 336 affiliated healthcare providers practicing across 7 locations.

The practice brings together providers across multiple specialties, including psychiatry, nurse practitioner, internal medicine, and diagnostic radiology. Its providers are in-network with 36 insurance plans, though coverage varies by individual provider and should be confirmed before scheduling.

Insurance Networks

Accepted insurance plans and networks

County Of San Mateo accepts 102 plans from 15 insurers, including Cigna, Aetna, UnitedHealthcare.

Az Localflex Excl Ebh And Pathwell
Az Localflex Incl Ebh And Pathwell
Az Localflex Incl Ebh Excl Pathwell
Central Pennsylvania GppoPPO
Chc Of New York Njpcp
Chicago Il Connect Network
Cigna Surefit Central Florida
Cigna Surefit South Florida
Health Care Alliance Of The Front Range
Healthpartners Qualified Network
Indiana Ifp Connect
Localplus
Localplus Exclude Ebh With Pathwell
Localplus Sar
Localplus With Ebh Plus Pathwell
Metro New York GppoPPO
Metro Ny Seamless Hmo NetworkHMO
Mvp Mohawk Valley Physicians
National OapOAP
National PpoPPO
National Ppo Sar 1PPO
National Ppo Sar IiPPO
Nc Connect Hmo RuralHMO
North Carolina GppoPPO
North Carolina HmoHMO
Oap Shared Admin RepricingOAP
Pathwell OapOAP
Pathwell PpoPPO
Priority Health Alliance
San Francisco Sacramento HmoHMO
Southern Ca HmoHMO
Vsmed

Source: CMS Transparency in Coverage filings (March 2026). Network participation may change — verify with the provider's office before scheduling.

Specialties at County Of San Mateo

Provider specialties represented at this practice

Psychiatry59 providers
Nurse Practitioner55 providers
Internal Medicine36 providers
Diagnostic Radiology20 providers
Marriage And Family Therapist15 providers
Clinical Psychologist13 providers
Clinical Social Worker10 providers
Family Practice9 providers
Obstetrics/gynecology8 providers
General Practice8 providers
Anesthesiology8 providers
General Surgery8 providers

Healthcare Providers in San Mateo

276 providers practice here

Frequently Asked Questions

Common questions about County Of San Mateo

How many providers are at County of San Mateo?

County of San Mateo has 336 affiliated healthcare providers across 7 locations. You can browse the full provider roster, with specialties and locations, on this page.

What specialties does County of San Mateo offer?

The practice includes providers in psychiatry, nurse practitioner, internal medicine, and diagnostic radiology, among others. Use the specialty filter on the provider list to find a specific type of provider.

What insurance does County of San Mateo accept?

Providers at County of San Mateo are collectively in-network with 36 insurance plans. Acceptance varies by individual provider, so confirm your specific plan with the office before your visit.

Where is County of San Mateo located?

County of San Mateo's primary location is in San Mateo, CA, with 6 additional locations listed on this page. See the contact section for the full address and phone number.

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