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 56 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. Erin Pettygrove, RDNRegistered Dietitian1811474570
  2. Melika PeyvandiPharmacist1659196582
  3. Angel PhamBehavior Technician1972445773
  4. Duyen PhamBehavior Technician1528774221
  5. Irene Pham, RDH, MPHMental Health Counselor1659783751
  6. Nguyen PhamPharmacist1740015072
  7. Phillip Pham, PHARMD.Pharmacist1457048126
  8. Tracy Pham, MDPediatrics Physician1619166147
  9. Kathy PhanBehavior Analyst1043711807
  10. Phung PhanMental Health Counselor1770916413
  11. Alan PharnBehavior Technician1134823230
  12. Corina PhaybounBehavior Technician1265900385
  13. Molly Phelps, MDEmergency Medicine Physician1083814800
  14. Justin PhilipsBehavior Technician1952073389
  15. Jocelyn PhillipsBehavior Technician1326908989
  16. Kristy Phillips, PHDStudent in an Organized Health Care Education/Training Program1902155047
  17. Tiffany Phu, PHDPsychologist1124909320
  18. Stephen PickeringPeriodontics1801977368
  19. Jammie PierceallBehavior Technician1992395842
  20. Paige PietrofesaMental Health Counselor1326717075
  21. Albert PignataroMarriage & Family Therapist1063607299
  22. Angela PinascoBehavior Technician1649886060
  23. Claudia Pineda MercadoBehavior Technician1619566015
  24. Kimberly PingolStudent in an Organized Health Care Education/Training Program1063832632
  25. Linda PinoCommunity Health Worker1871775007
  26. Jessica Pinto EscalanteBehavior Technician1831915909
  27. Frank Piro, MDPlastic and Reconstructive Surgery Physician1396765954
  28. Rosemary Pittsinger, PTPhysical Therapist1194879601
  29. Stanley PiverMarriage & Family Therapist1194182691
  30. Kris PiyarongPharmacist1720634488
  31. John PlaczkiewiczBehavior Technician1376188128
  32. Brandon Pleman, MDFamily Medicine Physician1407477003
  33. Ann Pocapalia, RD, CDERegistered Dietitian1962411140
  34. Candice Pochini-SingletonMarriage & Family Therapist1760912497
  35. Lavergne Poe, MA, PSYCHOLOGYMarriage & Family Therapist1982882767
  36. Ramsay Poindexter, AU.D.Audiologist1306987003
  37. Debra Polivka, RNCase Management Registered Nurse1982561155
  38. Alicia Pollak, MS, CNMAdvanced Practice Midwife1225247851
  39. Christina Pollard, DPTPhysical Therapist1013485978
  40. Denise Pollard, MA, BCBABehavior Analyst1164721197
  41. Rachel Pomales KomjathyBehavior Technician1447715016
  42. Pete PonceAddiction (Substance Use Disorder) Counselor1578921177
  43. Henry Poon, PH.D.Marriage & Family Therapist1427269422
  44. Bryan PopePeriodontics1730289562
  45. Elizabeth Porio, RN, BSNRegistered Nurse1053720623
  46. Elizabeth Porter, MA CCC SLPSpeech-Language Pathologist1699338400
  47. Maria PorterMassage Therapist1801400247
  48. Rachel PorterSocial Worker1740716380
  49. Laura PortilloCounselor1578174066
  50. Holly PortisCommunity Health Worker1457069486

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.