NPPES file of Aug 9, 2026

Doctors and health care providers in Fresno, CA

19,440 individual NPPES records list a practice address in Fresno, 6th of 812 California cities. The largest group is behavior technician: 3,618, 19% of the city's records, against 18% across California. Page 55 of 389.

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

The 8 largest groups in Fresno

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

Fresno in California

  • Rank in California6th of 812 cities by records
  • Share of the state2% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups31% of all records
  • Behavior Technician rank10th of the 10 California cities with the most

Compared with California as a whole, Fresno has 4× the state's share of psychiatric/mental health registered nurse records and 0.59× its share of physical therapist records.

Providers in Fresno, alphabetically

  1. Evelina Castillo, AODAddiction (Substance Use Disorder) Counselor1841939956
  2. Felicity CastilloBehavior Technician1902589005
  3. Gabrealle CastilloBehavior Technician1083283303
  4. Janelle CastilloBehavior Technician1073072559
  5. Joshua CastilloBehavior Technician1235788266
  6. Joshua CastilloBehavior Technician1427980523
  7. Juan CastilloRehabilitation Practitioner1609411461
  8. Katie Castillo, RNPsychiatric/Mental Health Registered Nurse1942498373
  9. Luis Castillo, DDSGeneral Practice Dentistry1265501415
  10. Lydia Castillo, BCBABehavior Analyst1760952451
  11. Makayla CastilloBehavior Technician1720875073
  12. Margaret Castillo, MAMarriage & Family Therapist1285196535
  13. Maria CastilloDentist1871307405
  14. Melissa CastilloAddiction (Substance Use Disorder) Counselor1639949829
  15. Michael Castillo, M.D.Family Medicine Physician1174671754
  16. Nicole Castillo, MAMarriage & Family Therapist1144888132
  17. Oscar Castillo, NPPsychiatric/Mental Health Nurse Practitioner1396382206
  18. Patricia Castillo, LMFTMarriage & Family Therapist1912477092
  19. Roxanne CastilloSocial Worker1548968605
  20. Ruby CastilloBehavior Technician1255833430
  21. Vanessa CastilloSocial Worker1518608397
  22. Vanessa CastilloProfessional Counselor1639030414
  23. Virginia CastilloBehavior Technician1891552576
  24. Yuleinys CastilloProfessional Counselor1477331585
  25. Edgar Castillo-Armas, M.D.Psychiatry Physician1851492847
  26. Kirsten Castillo-MorrisLicensed Vocational Nurse1558824193
  27. Diose Castillo-RamirezBehavior Technician1841186830
  28. Georgina Castle, DACM. L.AC.Acupuncturist1548473341
  29. Ronald Castonguay, MDSpecialist1154467074
  30. Jeff CastorPharmacist1457764474
  31. Adrienne CastroAddiction (Substance Use Disorder) Counselor1245633924
  32. Alana CastroBehavior Technician1225981046
  33. Alexsandria CastroPeer Specialist1467316794
  34. Alyssa CastroBehavior Technician1063914265
  35. Beatriz Castro, FNP-CFamily Nurse Practitioner1265006738
  36. Carina CastroRegistered Nurse1669948246
  37. Christy CastroBehavior Technician1093218406
  38. Elliot CastroCase Manager/Care Coordinator1104274935
  39. Esmeralda CastroSocial Worker1639027212
  40. Geraldine Castro, RDADental Assistant1457817462
  41. Gleyra Castro, LMFTMarriage & Family Therapist1316269459
  42. Hannah CastroBehavior Technician1114710142
  43. Irma Castro, MDFamily Medicine Physician1285652669
  44. Irma CastroBehavior Technician1235698622
  45. Jeannette CastroCounselor1023555604
  46. Jillyan CastroDay Training/Habilitation Specialist1437011020
  47. Joanna CastroBehavior Technician1063012797
  48. Pauline CastroLicensed Vocational Nurse1487581476
  49. Persephone CastroBehavior Technician1780364570
  50. Raquel Castro, RNCase Management Registered Nurse1679317457

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

Fresno, California appears in the CMS National Plan and Provider Enumeration System with 19,440 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 Fresno - 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 Fresno 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 Fresno is weighted toward Behavior Technician (3,618 clinicians, followed by Addiction (Substance Use Disorder) Counselor with 1,231 and Marriage & Family Therapist with 1,175). 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, Fresno reports roughly 49.9 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 Fresno 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 Fresno, CA?

There are 19,440 registered healthcare providers in Fresno, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Fresno?

The most common specialties in Fresno are Behavior Technician, Addiction (Substance Use Disorder) Counselor, Marriage & Family Therapist, Student in an Organized Health Care Education/Training Program, Pharmacist. Behavior Technician has the most providers with 3,618.

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.