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 13 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. Amy Chen, RD, CDERegistered Dietitian1437701042
  2. Angellee Chen, M.D.Forensic Pathology Physician1457164196
  3. Callie ChenMental Health Counselor1619601614
  4. Cindy ChenCommunity Health Worker1467250183
  5. Dui Chen, LCSWClinical Social Worker1881001188
  6. Emily Chen, DMDDentist1568676385
  7. Florence Chen, LACAcupuncturist1730338385
  8. Hsiao-Ying Chen, BCBABehavior Analyst1386901569
  9. J Chen, DDS,, MS,, PHD.Orthodontics and Dentofacial Orthopedics Dentistry1073885505
  10. Judy Chen, PHARMACISTPharmacist1033439880
  11. Kenneth Chen, D.P.M.Podiatrist1598840175
  12. Li-Chu Chen, DDSGeneral Practice Dentistry1982790861
  13. Lianna ChenCommunity Health Worker1578132510
  14. Paul Chen, LAC OMD PHDAcupuncturist1407983729
  15. Ru ChenStudent in an Organized Health Care Education/Training Program1588958672
  16. Shu Yi Chen, RPHPharmacist1902401250
  17. Stephanie Chen, RDRegistered Dietitian1710506142
  18. William Chen, LACAcupuncturist1417013939
  19. Yun - Chih Chen, AU.D.Audiologist1740524602
  20. Yung Chen, MDPhysical Medicine & Rehabilitation Physician1386601623
  21. Kiona ChengBehavior Analyst1588152979
  22. Priscilla Cheng, MA, LMFTMarriage & Family Therapist1558614305
  23. Sandra Cheng, ODOptometrist1982711446
  24. Susanna Cheng, DDSDentist1477946606
  25. Nicole Cherok, D.C.Chiropractor1457382616
  26. James Chessing, PHDClinical Psychologist1326142407
  27. Ben ChettipallyBehavior Technician1053960138
  28. Chole CheungBehavior Technician1043146707
  29. Joey CheungRadiological Physics Physician1154256493
  30. Lilian CheungPharmacist1730630518
  31. Sophia Cheung, RDRegistered Dietitian1881541902
  32. Garrick Chew, PTPhysical Therapist1467710244
  33. Teri Chew, M.D.Emergency Medicine Physician1508032905
  34. Deepal Chhaganlal, MDFamily Medicine Physician1225692122
  35. Michelle ChiFamily Nurse Practitioner1972452423
  36. Andrea ChiangMarriage & Family Therapist1437698628
  37. Stacy ChiangClinical Psychologist1487007936
  38. Yu-Hsuen Chiang, BDS. DMD.Pediatric Dentistry1326277336
  39. Nancy Chiao-CastleNurse Practitioner1578619052
  40. Peter Chien, DDSGeneral Practice Dentistry1043948334
  41. Katherine ChinPharmacist1578882577
  42. Suzanne Chipana TineoBehavior Technician1750963047
  43. Terri Chipman, M.D.Otolaryngology Physician1427078377
  44. Catherine Chiu, D.D.S.General Practice Dentistry1538284583
  45. Renee ChiuGeneral Practice Dentistry1619674777
  46. Frederick Cho, D.D.S.Endodontics1649369265
  47. Joonhee Cho, MDChild & Adolescent Psychiatry Physician1811428360
  48. Matthew ChoPharmacist1790153658
  49. Daniel ChoeCommunity Health Worker1558159475
  50. Sarah Choe, LMFTMarriage & Family Therapist1104309780

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.