NPPES file of Aug 9, 2026

Doctors and health care providers in San Jose, CA

20,925 individual NPPES records list a practice address in San Jose, 5th of 812 California cities. The largest group is behavior technician: 3,847, 18% of the city's records, against 18% across California. Page 52 of 419.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in San Jose

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

San Jose in California

  • Rank in California5th of 812 cities by records
  • Share of the state2.2% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups30.2% of all records
  • Behavior Technician rank8th of the 10 California cities with the most

Compared with California as a whole, San Jose has 2.4× the state's share of rehabilitation practitioner records and 0.55× its share of addiction (substance use disorder) counselor records.

Providers in San Jose, alphabetically

  1. Alejandra CastilloBehavior Technician1942834403
  2. Ashley Castillo, B.A. PSYCHOLOGYCase Manager/Care Coordinator1346787470
  3. Bridget CastilloClinical Social Worker1861900821
  4. Cristina CastilloSocial Worker1316399819
  5. Dinah CastilloBehavior Technician1114590528
  6. Elizabeth CastilloSchool Social Worker1407213788
  7. Elizabeth CastilloBehavior Technician1447870704
  8. Frank Castillo, DDSDentist1972655983
  9. Frank Castillo, D.D.S.Dentist1851775803
  10. Henry CastilloBehavior Technician1194610667
  11. Iriscarolina Castillo, EDD, LMFTMental Health Counselor1346427440
  12. Jasmin CastilloBehavior Technician1215789359
  13. Kerry CastilloBehavior Technician1053934810
  14. Mandi CastilloBehavior Technician1255996377
  15. Marianne CastilloRehabilitation Practitioner1295459675
  16. Pia CastilloSpeech-Language Pathologist1477481984
  17. Lily Castillon, RNAmbulatory Care Registered Nurse1023838521
  18. Melissa CastleBehavior Technician1558853531
  19. Katherine Casto, PTPhysical Therapist1013064708
  20. Charles Castor-ThomasMental Health Counselor1003074899
  21. Ivana CastrejonBehavior Technician1245703685
  22. Christopher CastroMental Health Counselor1033693353
  23. Claudia CastroBehavior Technician1588202469
  24. Eduardo Castro, D.D.S.General Practice Dentistry1902910912
  25. Erika CastroCommunity Health Worker1548143522
  26. Ivonne CastroBehavior Technician1114577947
  27. Jessica CastroBehavior Technician1508635327
  28. Jonathan CastroRehabilitation Practitioner1013417278
  29. Julie Castro, NPNurse Practitioner1770590465
  30. Katrina Marie CastroBehavior Technician1275379042
  31. Lauren CastroProfessional Counselor1417609348
  32. Luis CastroCase Manager/Care Coordinator1306673918
  33. Magaly CastroBehavior Technician1639930829
  34. Maria CastroBehavior Technician1043844509
  35. Marisela CastroRehabilitation Practitioner1417892498
  36. Michelle CastroBehavior Technician1447897855
  37. Nancy CastroSocial Worker1407399686
  38. Pablo CastroBehavior Technician1043714116
  39. Rachael CastroProfessional Counselor1396296463
  40. Rachael CastroBehavior Technician1760095871
  41. Salvador CastroCase Manager/Care Coordinator1467947754
  42. Shana CastroBehavior Technician1124608021
  43. Victor CastroBehavior Technician1215856083
  44. Guadalupe Castro MoralesBehavior Technician1447816699
  45. Diana Castro PenaBehavior Technician1770316051
  46. Beatriz Castro-OrtizMental Health Counselor1841744836
  47. Alyssa CatalanBehavior Technician1083177836
  48. Jessica CatalanSocial Worker1366278525
  49. Linda Catalli, FNP-BCFamily Nurse Practitioner1679883821
  50. Onjoo Cater, R.N.Case Management Registered Nurse1336320035

The largest California cities

  1. Los Angeles69,537
  2. San Diego52,937
  3. San Francisco38,143
  4. Sacramento33,083
  5. Fresno19,440

All of California →

How to read this directory

San Jose, California appears in the CMS National Plan and Provider Enumeration System with 20,925 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 Jose - 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 Jose 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 Jose is weighted toward Behavior Technician (3,847 clinicians, followed by Marriage & Family Therapist with 1,400 and Mental Health Counselor with 1,063). 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 Jose reports roughly 53.7 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 Jose 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 Jose, CA?

There are 20,925 registered healthcare providers in San Jose, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in San Jose?

The most common specialties in San Jose are Behavior Technician, Marriage & Family Therapist, Mental Health Counselor, Pharmacist, Case Manager/Care Coordinator. Behavior Technician has the most providers with 3,847.

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.