NPPES file of Aug 9, 2026

Doctors and health care providers in Ventura, CA

4,435 individual NPPES records list a practice address in Ventura, 45th of 812 California cities. The largest group is behavior technician: 543, 12% of the city's records, against 18% across California. Page 14 of 89.

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

The 8 largest groups in Ventura

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

Ventura in California

  • Rank in California45th of 812 cities by records
  • Share of the state0.5% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups27.1% of all records

Compared with California as a whole, Ventura has 4.3× the state's share of psychiatric/mental health registered nurse records and 0.68× its share of family nurse practitioner records.

Providers in Ventura, alphabetically

  1. Lillian CastellonAddiction (Substance Use Disorder) Counselor1932654589
  2. Amber CastilloPeer Specialist1093524233
  3. Ma Rowena Castillo, DPTPhysical Medicine & Rehabilitation Physician1124860614
  4. Maria CastilloBehavior Technician1427975630
  5. Giselle CastroLicensed Vocational Nurse1780510719
  6. Thomas Castro, DPTOrthopedic Physical Therapist1386222875
  7. Laura Castro-BarretoBehavior Technician1104468321
  8. Jessica Cataldo-RamirezPhysician Assistant1922642115
  9. Ashley CatesAddiction (Substance Use Disorder) Counselor1528474202
  10. Desiree CayerRegistered Nurse1235748401
  11. Breanna Caywood, DOStudent in an Organized Health Care Education/Training Program1023850633
  12. Aiyana Cazabat, MA, LMFTMarriage & Family Therapist1952005837
  13. Eliza Cazares, SLPASpeech-Language Assistant1972138592
  14. Maritza CazaresStudent in an Organized Health Care Education/Training Program1902779119
  15. Araceli CedilloMarriage & Family Therapist1164254827
  16. Richard Cegelski, M.D.Emergency Medical Services (Emergency Medicine) Physician1235390071
  17. Yadira CejaBehavior Technician1316822067
  18. Daina CelioBehavior Technician1407795545
  19. Rosa CelisAddiction (Substance Use Disorder) Counselor1356016737
  20. Natalia Cenzano, DDSGeneral Practice Dentistry1871600726
  21. Gerard CeraosMental Health Counselor1497210892
  22. Ariana CerenBehavior Technician1114870193
  23. Casey CervantesBehavior Technician1063355006
  24. Fernando Cervantes, PMHNPPsychiatric/Mental Health Nurse Practitioner1396179131
  25. Jenean CervantesMental Health Counselor1346171014
  26. Miguel Cervantes, M.D.Family Medicine Physician1083777023
  27. Ramona CervantesCase Manager/Care Coordinator1225342496
  28. Unique CervantesBehavior Technician1285427930
  29. Joseph CervantezAddiction (Substance Use Disorder) Counselor1558810226
  30. Irene CezarLicensed Vocational Nurse1508523465
  31. Robert Chacon, C.O.Orthotist1114192796
  32. Ally Chae, MPTSpecialist1154569887
  33. Nan Chaet, MS, CCC-SLPSpeech-Language Pathologist1366689010
  34. Wikrom Chaiwatcharayut, M.D.Internal Medicine Physician1306259809
  35. Hana Chakalian, DOInternal Medicine Physician1962145631
  36. Ashley ChambersBehavior Technician1508667023
  37. William ChampionMental Health Counselor1649721226
  38. Ivan Chan, LMFTMarriage & Family Therapist1669167771
  39. May Chan, O.D.Optometrist1891179545
  40. Melenie Chandler, PTAPhysical Therapy Assistant1881368611
  41. Mark Chaney, A.T.C.Specialist1912973777
  42. Annie ChangFamily Medicine Physician1396191995
  43. David Chang, LVNLicensed Vocational Nurse1477109148
  44. Diana ChangEndocrinology, Diabetes & Metabolism Physician1396142386
  45. Kyung ChangPharmacist1174763510
  46. Li-Wen ChangMental Health Counselor1558537365
  47. Steven Chang, M.D.Ophthalmology Physician1174598239
  48. George Chang Chien, D.O.Interventional Pain Medicine Physician1346565280
  49. Audree Chapman, LMFTMarriage & Family Therapist1164936704
  50. Pamela Chapman, LMFTClinical Social Worker1922202076

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

Ventura, California appears in the CMS National Plan and Provider Enumeration System with 4,435 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 Ventura - 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 Ventura 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 Ventura is weighted toward Behavior Technician (543 clinicians, followed by Marriage & Family Therapist with 426 and Family Medicine Physician with 234). 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, Ventura reports roughly 11.4 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 Ventura 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 Ventura, CA?

There are 4,435 registered healthcare providers in Ventura, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Ventura?

The most common specialties in Ventura are Behavior Technician, Marriage & Family Therapist, Family Medicine Physician, Student in an Organized Health Care Education/Training Program, Mental Health Counselor. Behavior Technician has the most providers with 543.

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.