NPPES file of Aug 9, 2026

Doctors and health care providers in San Mateo, CA

3,909 individual NPPES records list a practice address in San Mateo, 54th of 812 California cities. The largest group is behavior technician: 848, 22% of the city's records, against 18% across California. Page 74 of 79.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

San Mateo in California

  • Rank in California54th of 812 cities by records
  • Share of the state0.4% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups35.7% of all records

Compared with California as a whole, San Mateo has 2.5× the state's share of psychiatry physician records and 0.57× its share of family medicine physician records.

Providers in San Mateo, alphabetically

  1. Michael Wakasa, DDSDentist1922140110
  2. Ritika WaknisBehavior Technician1609612654
  3. Ilai WakratBehavior Technician1295588812
  4. Damon WalcottPsychiatry Physician1396890380
  5. Sanika WalimbeBehavior Technician1023794393
  6. Christina WalkerStudent in an Organized Health Care Education/Training Program1215244595
  7. Dan Walker, ATCAthletic Trainer1306245188
  8. Kenneth WalkerBehavior Technician1912402652
  9. Samantha WalkerMental Health Counselor1215311691
  10. Stephen WalkerCommunity Health Worker1346898053
  11. Valentino Walker, LCSWClinical Social Worker1508992413
  12. Breanna WallaceBehavior Technician1598478703
  13. Kristen Walsh, PA-CPhysician Assistant1417706714
  14. Lisa Walsh, DCChiropractor1497888242
  15. Aaron WalterCase Manager/Care Coordinator1376150490
  16. Kalie WaltonBehavior Technician1992388151
  17. Jennifer Wan, MDDiagnostic Radiology Physician1356616544
  18. Maggie WanBehavior Analyst1245695543
  19. Megan WandelBehavior Analyst1184173395
  20. Angela Wang, DDSDentist1407057540
  21. Elizabeth Wang, MDDermatology Physician1043695174
  22. Ivy WangMarriage & Family Therapist1184101909
  23. Jennifer Wang, D.M.D.Dentist1548505217
  24. Kara Wang, MDPsychiatry Physician1194309823
  25. Karen WangBehavior Technician1104311000
  26. Ke WangFamily Medicine Physician1538016506
  27. Liezhen WangAcupuncturist1356491260
  28. Linda Wang, DMDDentist1265777114
  29. Mark WangCounselor1396961793
  30. Minjun WangProfessional Counselor1023461720
  31. Peter Wang, M.D.Pediatrics Physician1215950316
  32. Raziya Wang, M.D.Psychiatry Physician1831231893
  33. Yueming WangStudent in an Organized Health Care Education/Training Program1639364664
  34. Yvette Ward, L.AC., M.S.Acupuncturist1134354178
  35. Mina WardakBehavior Analyst1194270173
  36. Eliza Warde, MFT IMarriage & Family Therapist1487706420
  37. Ana WarnerCommunity Health Worker1235465246
  38. Katherine WarnerMarriage & Family Therapist1285916940
  39. Porter Warrick HessClinical Social Worker1184376790
  40. Diane Warzecha, OTR/LOccupational Therapist1104226836
  41. Christian WashburnCase Manager/Care Coordinator1023270485
  42. Chyvonne WashingtonCommunity Health Worker1962024489
  43. Lygeia WashingtonBehavior Analyst1831731322
  44. Mark Watan, L.AC.Acupuncturist1427290576
  45. Sarah WatermulderClinical Social Worker1376815324
  46. Sandra Watkins, M.A., BCBABehavior Analyst1831547132
  47. Susan Watkins, PSYD MFTMarriage & Family Therapist1710647409
  48. Frederick Watson, M.D.Cardiovascular Disease Physician1568450104
  49. Gianna WatsonBehavior Technician1659910289
  50. Ann Watters, PHDPsychologist1326161068

The largest California cities

  1. Los Angeles69,537
  2. San Diego52,937
  3. San Francisco38,143
  4. Sacramento33,083
  5. San Jose20,925

All of California →

How to read this directory

San Mateo, California appears in the CMS National Plan and Provider Enumeration System with 3,909 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in San Mateo - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a San Mateo practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in San Mateo is weighted toward Behavior Technician (848 clinicians, followed by Marriage & Family Therapist with 348 and Behavior Analyst with 200). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to California's population, San Mateo reports roughly 10 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.

For San Mateo patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.

For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.

Common questions

How many doctors are in San Mateo, CA?

There are 3,909 registered healthcare providers in San Mateo, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in San Mateo?

The most common specialties in San Mateo are Behavior Technician, Marriage & Family Therapist, Behavior Analyst, Mental Health Counselor, Clinical Social Worker. Behavior Technician has the most providers with 848.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.