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 26 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. Randall Gaynor, MDAnesthesiology Physician1316963028
  2. Denise Gaytan, LVMLicensed Vocational Nurse1861056426
  3. Beatrice GeeDay Training/Habilitation Specialist1205708724
  4. Maura GegenwarthSpeech-Language Pathologist1265664270
  5. Albert Geller, M.D.Otolaryngology Physician1821018771
  6. Roberta Gelt, MFTMental Health Counselor1699962720
  7. Matthew Geltmaker, LCSWClinical Social Worker1932304193
  8. Marie GeorgeBehavior Analyst1235586132
  9. Mary Gerlach, NPStudent in an Organized Health Care Education/Training Program1124537790
  10. Great Shelin GeronimoBehavior Technician1134700370
  11. Maria Geronimo, PTPhysical Therapist1023394053
  12. Emily Gershon, BA, BCBABehavior Analyst1922497403
  13. Bryan Gescuk, M.D.Rheumatology Physician1295815579
  14. Lawrence Gettler, MDEmergency Medicine Physician1083719926
  15. Alireza Ghamgosar, D.P.M.Foot & Ankle Surgery Podiatrist1295756674
  16. Nuha Ghanem, B.ACase Manager/Care Coordinator1134755713
  17. Ruqayah GhausBehavior Technician1225664741
  18. Laila GhazanfarpourCase Manager/Care Coordinator1902309727
  19. Umesh Gheewala, M.D.Internal Medicine Physician1982608568
  20. Priyanka Ghosh, M.D.Pain Medicine (Anesthesiology) Physician1558756791
  21. Elizabeth GianniniMarriage & Family Therapist1831850973
  22. Anacristina Giaquinto, ANA CRISTINA GIAQUINClinical Social Worker1295068377
  23. Sara GibersonBehavior Technician1235019274
  24. Jennifer Giblin, P.T.Pediatric Physical Therapist1871848721
  25. Pardeep GillBehavior Technician1316412869
  26. Amaiya GillisBehavior Technician1609606961
  27. Delonie Gilstrap, MSBehavior Analyst1689175978
  28. Stephanie Gim, RDHAPDental Hygienist1780091595
  29. Greta GioustremesCommunity Health Registered Nurse1366568909
  30. Giovanna Giron, CAADEAddiction (Substance Use Disorder) Counselor1023243573
  31. Lynn Gitlin, DDSDentist1952460883
  32. Jasmine Gittens, MA, ATCAthletic Trainer1265924880
  33. Mark GiulianoAssistant Health Information Record Technician1285100164
  34. Katherine GlascockBehavior Analyst1336789106
  35. Laura GleasonMental Health Counselor1073202230
  36. David Glenn, MDAnesthesiology Physician1194875229
  37. Cynthia Glidewell, RN BSRegistered Nurse1700022217
  38. Waki GojoBehavior Technician1669166328
  39. Tiffany Goldberg, PHARMDPharmacist1245681527
  40. Bethany Golden, CNMAdvanced Practice Midwife1104042712
  41. Michael Goldfield, M.D.Forensic Psychiatry Physician1356425185
  42. Peter Goldie, B.S.Behavior Technician1265092118
  43. Anna GoldmanWomen's Health Nurse Practitioner1780173757
  44. Monet GoldmanMarriage & Family Therapist1235651266
  45. Alicia Goldstein, PHN, RNRegistered Nurse1417283425
  46. Ellen Goldstein, M.A.Marriage & Family Therapist1841498326
  47. Linda Goldstein, MA, MFT, REATMarriage & Family Therapist1023189578
  48. Rachel GoldsteinBehavior Technician1144947011
  49. Adriana GomezMarriage & Family Therapist1992673495
  50. Darcie Marie GomezBehavior Technician1659838332

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.