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 33 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. Cynthia Huang, ODOptometrist1538771068
  2. Derek Huang, PHARMDPharmacist1588737431
  3. Gilbert Huang, DPMFoot & Ankle Surgery Podiatrist1366094856
  4. Guofu HuangAcupuncturist1427575018
  5. Jonathan HuangPediatrics Physician1194286179
  6. Stanley Huang, PHARM.D.Pharmacist1861011140
  7. Elizabeth Hudson, DOInfectious Disease Physician1952475667
  8. Omari HudsonBehavior Technician1801242110
  9. Ivette Huerta, LMFTMarriage & Family Therapist1447496336
  10. Gary Huey, MDFamily Medicine Physician1013043934
  11. Rebekah HugginsBehavior Analyst1609326321
  12. Paul Hughes, MDSports Medicine (Orthopaedic Surgery) Physician1851361695
  13. Suzanne Hughes, MFTMarriage & Family Therapist1073531414
  14. Walter HuguetMental Health Counselor1205951001
  15. Noreen Hui, LMFTMarriage & Family Therapist1790830677
  16. Paul Hui, D.D.S.General Practice Dentistry1164641080
  17. Saralyn HuiBehavior Analyst1487501581
  18. Stanley Hui, M.D.Gastroenterology Physician1023196888
  19. Therese Hui, LACAcupuncturist1891811881
  20. Annmarie Hulette, PHDPsychologist1871712562
  21. Melissa Hummelt, LMHCProfessional Counselor1497047229
  22. Sharon Humphrey, PSY.D.Clinical Psychologist1003369463
  23. Sherlene HungBehavior Technician1346869880
  24. Mel HuntBehavior Technician1881584050
  25. Chloe HunterBehavior Technician1043903669
  26. Patricia HurstCase Manager/Care Coordinator1144401928
  27. Stephen Hurst, M.D.Specialist1689680142
  28. Kelly HuynhBehavior Technician1629670435
  29. Jennifer Huynh-Lim, MS, CGCGenetic Counselor (M.S.)1134700297
  30. Helen Hwang, D.D.S.Orthodontics and Dentofacial Orthopedics Dentistry1003996802
  31. Ronald Hwang, D.M.D.General Practice Dentistry1245390178
  32. Jeffrey Hylton, LCSWClinical Social Worker1104976281
  33. Michelle HymanDoula1104242908
  34. Kathleen Hynes, MFTMarriage & Family Therapist1265464135
  35. Alex IbarraBehavior Technician1295567824
  36. Evan IbarraBehavior Technician1023771649
  37. Nicole Ibarra, MFTMarriage & Family Therapist1861625584
  38. Teresa IbarraCommunity Health Worker1336491471
  39. Glenn Ibarrientos, R.N.Registered Nurse1104007152
  40. Joseph Ibe, D.C.Chiropractor1578875969
  41. Ilona IgnatjevaOther Specialist/Technologist1821921065
  42. Shannon IkedaSpeech-Language Pathologist1659698876
  43. Kathleen Ikuta, PTPediatric Physical Therapist1396147278
  44. Jun Mee ImAcupuncturist1730842188
  45. Shirin Imani, DDSGeneral Practice Dentistry1174650543
  46. Michael Immerman, MSWClinical Social Worker1174703367
  47. David Isenman, MDPsychiatry Physician1225071400
  48. Ryuko Ishikawa, MDPsychiatry Physician1053629634
  49. Dennis IsraelskiInfectious Disease Physician1831263540
  50. Jay IsslerClinical Social Worker1427173038

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.