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 38 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. Jacqueline Koo, MDOphthalmology Physician1528060308
  2. Man Lai Koon, O,T,Occupational Therapist1942567771
  3. Vivian KorolukMental Health Counselor1033566252
  4. Sarah Korsunsky, LCSWClinical Social Worker1568610111
  5. Ricky KotCase Manager/Care Coordinator1558542340
  6. Danielle Kozak Joy, APNPNurse Practitioner1538578059
  7. Kenneth Krantz, M.D., PHD.Research Study Specialist1073987087
  8. Andrew KraskinAddiction (Substance Use Disorder) Counselor1942921648
  9. Michael KrechevskyCase Manager/Care Coordinator1982148557
  10. Rachel KrellensteinMental Health Counselor1245465236
  11. Joseph KrezanoskiFamily Nurse Practitioner1518507409
  12. Lee Anne KromhoutBehavior Technician1376204990
  13. Emma KrpanSpeech-Language Pathologist1487327789
  14. Chen KrugerBehavior Technician1932080173
  15. Sophie KuStudent in an Organized Health Care Education/Training Program1831838796
  16. Suet Ying Ku, R.D.Registered Dietitian1548529993
  17. Kim KubalStudent in an Organized Health Care Education/Training Program1225554538
  18. Siew Kuek, PSY.DClinical Psychologist1750533675
  19. Linda KuhliClinical Social Worker1245356336
  20. Kahanaaloha KuikahiStudent in an Organized Health Care Education/Training Program1043567043
  21. Robert Kule, M.D.Ophthalmology Physician1235455197
  22. Nina KulgeinRegistered Nurse1689790776
  23. Akansha KumarBehavior Technician1235957986
  24. Rahi Kumar, M.D.Diagnostic Radiology Physician1730452806
  25. Mark Kunkel, ACSWMental Health Counselor1184289290
  26. Chester Kunnappilly, MDInternal Medicine Physician1437220704
  27. Laura KunzeBehavior Technician1629859632
  28. Chien Yung KuoRegistered Dietitian1699178244
  29. Eric Kuo, MDHematology & Oncology Physician1962907014
  30. Tommy Kuo, MDFamily Medicine Physician1851396469
  31. Yoko Kuramoto, D.M.D.Dentist1831474824
  32. Ryan Kuriakose, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1447848528
  33. Joseph KurianCounselor1386964336
  34. David Kurzrock, M.D.Cardiovascular Disease Physician1619988425
  35. Deborah KurzrockRegistered Dietitian1952765398
  36. Aaron Kwan, O.D.Optometrist1265845077
  37. Amy Kwan, PHARM.D.Pharmacist1922380898
  38. Bethany KwanBehavior Analyst1104305507
  39. Hahnia Kwan, PHARMDPharmacist1346664042
  40. Jimmy Kwan, DDSGeneral Practice Dentistry1073725016
  41. Tessa KwanMarriage & Family Therapist1699482679
  42. Jasmin Kwok, PH.D.Psychologist1174870109
  43. Michelle Kwok, M.D.Psychiatry Physician1104905959
  44. Peggy Kwok, MFTMarriage & Family Therapist1306002050
  45. Seran KwonBehavior Technician1285232413
  46. Ian Kwong, RNRegistered Nurse1720945488
  47. Shelly KwongClinical Social Worker1699058180
  48. Huy L, PHARM.D.Pharmacist1912289711
  49. Jennifer La, PHARMDPharmacist1184254856
  50. Netty LaBehavior Technician1548097892

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.