NPPES file of Aug 9, 2026

Doctors and health care providers in Santa Ana, CA

8,904 individual NPPES records list a practice address in Santa Ana, 18th of 812 California cities. The largest group is behavior technician: 1,625, 18% of the city's records, against 18% across California. Page 113 of 179.

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).

The 8 largest groups in Santa Ana

  1. Behavior Technician1,625
  2. Mental Health Counselor684
  3. Marriage & Family Therapist678
  4. Clinical Social Worker433
  5. Addiction (Substance Use Disorder) Counselor407
  6. Registered Nurse281
  7. Counselor247
  8. Social Worker216

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

Santa Ana in California

  • Rank in California18th of 812 cities by records
  • Share of the state0.9% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups33.5% of all records

Compared with California as a whole, Santa Ana has 12.5× the state's share of community health registered nurse records and 0.50× its share of student in an organized health care education/training program records.

Providers in Santa Ana, alphabetically

  1. Darryl NguyenMarriage & Family Therapist1275013138
  2. Davidson Nguyen, RNRegistered Nurse1679260236
  3. Diana Nguyen, O. D.Optometrist1649499229
  4. Diana NguyenPharmacist1093968240
  5. Don Nguyen, PA-CPhysician Assistant1942913108
  6. Duke Nguyen, M.D.Diagnostic Radiology Physician1700822962
  7. Dung Nguyen, D.C.Chiropractor1548465743
  8. Dung NguyenStudent in an Organized Health Care Education/Training Program1144535782
  9. Duy Nguyen, RPHPharmacist1083252654
  10. Elaine NguyenBehavior Technician1346129806
  11. Erika NguyenMarriage & Family Therapist1639039530
  12. Ha NguyenAdministrator Registered Nurse1083704720
  13. Ha NguyenSpecialist1346059219
  14. Hai Nguyen, M.D.Internal Medicine Physician1558516963
  15. Hanh Nguyen, M.D.Family Medicine Physician1558516476
  16. Hanh Nguyen, D.OFamily Medicine Physician1639581986
  17. Hanna NguyenMarriage & Family Therapist1104603125
  18. Hau NguyenRegistered Nurse1043069719
  19. Hieu Nguyen, ARRTRadiography Radiologic Technologist1962924878
  20. Hieu-Kevin Nguyen, PTPhysical Therapist1689441149
  21. Hoan Nguyen, D.C.Chiropractor1750513974
  22. Hoang Nguyen, M.S.Speech-Language Pathologist1265824890
  23. Hong NguyenBehavior Technician1225709363
  24. Hong-Tam Nguyen, PHARMDPharmacist1346931326
  25. Houng NguyenBehavior Technician1407664550
  26. Hue Nguyen, M.D.Family Medicine Physician1588952832
  27. Huong Nguyen, D.D.SGeneral Practice Dentistry1407053390
  28. Huu Nguyen, M.D.Internal Medicine Physician1396922068
  29. Janet NguyenStudent in an Organized Health Care Education/Training Program1528906385
  30. Jasmine NguyenBehavior Technician1649979568
  31. Jaylene Nguyen, PA-CPhysician Assistant1720542665
  32. Jennifer Nguyen, NPPsychiatric/Mental Health Nurse Practitioner1518408335
  33. Jennifer Nguyen, OTR/LOccupational Therapist1790559342
  34. Jennifer NguyenCase Manager/Care Coordinator1770328031
  35. Jenny Nguyen, PHARMDPharmacist1477926335
  36. Jenny NguyenBehavior Technician1730769738
  37. Jessica Nguyen, PHARM,DPharmacist1750090957
  38. Jim Nguyen, M.D.Anesthesiology Physician1104237742
  39. Johnny Nguyen, MSN, FNPNurse Practitioner1881480788
  40. Judy NguyenNurse Practitioner1396296075
  41. Julie Nguyen, RNRegistered Nurse1316498827
  42. Junie NguyenClinical Social Worker1679854913
  43. Kaitlyn NguyenSpeech-Language Pathologist1861082349
  44. Karen Nguyen, RPHPharmacist1972968006
  45. Kathy Nguyen, PHARMDPharmacist1780397851
  46. Katie Nguyen, AMFTMarriage & Family Therapist1942066477
  47. Kelly Nguyen, DPTPhysical Therapist1508407412
  48. Ken Nguyen, PHN, RNCommunity Health Registered Nurse1043493612
  49. Kenneth NguyenStudent in an Organized Health Care Education/Training Program1760275630
  50. Khanh Nguyen, P.A.Physician Assistant1831342088

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

Santa Ana, California appears in the CMS National Plan and Provider Enumeration System with 8,904 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 Santa Ana - 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 Santa Ana 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 Santa Ana is weighted toward Behavior Technician (1,625 clinicians, followed by Mental Health Counselor with 684 and Marriage & Family Therapist with 678). 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, Santa Ana reports roughly 22.9 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.

Of California's most common specialties, Internal Medicine Physician is the most prominent one with no provider currently listing a Santa Ana practice address, a coverage gap Santa Ana patients typically fill by traveling to a larger nearby hub.

For Santa Ana 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 Santa Ana, CA?

There are 8,904 registered healthcare providers in Santa Ana, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Santa Ana?

The most common specialties in Santa Ana are Behavior Technician, Mental Health Counselor, Marriage & Family Therapist, Clinical Social Worker, Addiction (Substance Use Disorder) Counselor. Behavior Technician has the most providers with 1,625.

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.