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 29 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. Johanna GurBehavior Analyst1205372521
  2. Aubra GutierrezBehavior Technician1730730318
  3. Gloria GutierrezCase Manager/Care Coordinator1003930439
  4. Gloria GutierrezCase Manager/Care Coordinator1235310038
  5. Mary Gutierrez, MFTMarriage & Family Therapist1073733903
  6. Mercedes Gutierrez, MSW, ASW # 109251Social Worker1508597857
  7. Mia Gutierrez FuentesBehavior Technician1285598417
  8. Marcos Gutierrez SolteroBehavior Technician1225493471
  9. Pernille GutschickMarriage & Family Therapist1487778817
  10. Jeffrey Guttas, M.D.Cardiovascular Disease Physician1093726895
  11. Sophie Guymon, BABehavior Analyst1841005253
  12. Cyerra GuzmanBehavior Technician1194592345
  13. Maria De La Paz Guzman, P.A-CPhysician Assistant1235246083
  14. Vrenelli GuzmanStudent in an Organized Health Care Education/Training Program1952181687
  15. Karen Hackett, PHNRegistered Nurse1508135559
  16. Thomas Hacku, OTR/LOccupational Therapist1578935490
  17. Evelyn Haddad, M.D.Internal Medicine Physician1295936755
  18. Bill HaddockAddiction (Substance Use Disorder) Counselor1003412073
  19. Christina Hadley, PPS CREDENTIALPsychologist1467303842
  20. Angela HagermanBehavior Technician1073236766
  21. Darryl HallAddiction (Substance Use Disorder) Counselor1568994770
  22. Joan Haller, MSWClinical Social Worker1396957353
  23. Michelle Hamady, DCChiropractor1629269071
  24. Gary HamillOptometrist1699833152
  25. Henry Hamilton, M.D.Obstetrics & Gynecology Physician1417927534
  26. Jeramie HamiltonAddiction (Substance Use Disorder) Counselor1811610132
  27. Kasey HamiltonMarriage & Family Therapist1962978189
  28. Susan Hamlin, MFTMarriage & Family Therapist1346934460
  29. Danielle HammerBehavior Technician1104671338
  30. Elizabeth HammondBehavior Technician1154931392
  31. Derek HanPharmacist1215601034
  32. Erin HanBehavior Analyst1972094480
  33. Lisa Handa, RDHAPDental Hygienist1386808277
  34. Narmen Hanhan, DMD, MPHDentist1447635115
  35. Emily HanleyBehavior Technician1982234563
  36. Jamie Hanna, MA MFT ATRBCMarriage & Family Therapist1124232087
  37. Janara HannanBehavior Technician1124737234
  38. Holly HansingClinical Exercise Physiologist1851227151
  39. Dalia Harara, SLPSpeech-Language Pathologist1396617353
  40. Candice Harbison, RNRegistered Nurse1578024154
  41. Rebecca Harder, RNCase Management Registered Nurse1962361808
  42. Claire Harding, RNRegistered Nurse1952776064
  43. Kevin Harding-ToyDay Training/Habilitation Specialist1134445133
  44. Mirna HardyCase Manager/Care Coordinator1598087371
  45. Sarah HarknessMental Health Counselor1245569599
  46. Maehellena HarlanBehavior Analyst1043676125
  47. Aikisha Harley, PH.D.Clinical Neuropsychologist1699252957
  48. Heather Harms, PHNCommunity Health Registered Nurse1811197189
  49. Aidan Harn-FloodBehavior Technician1053147520
  50. Tanaz HarooniBehavior Technician1366026197

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.