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 116 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. Norina Nillas, NPRegistered Nurse1144304569
  2. Monique NilsenCase Manager/Care Coordinator1881862795
  3. Dewey NinhInfection Control Registered Nurse1073329603
  4. Kristen NinonuevoBehavior Technician1740820257
  5. Julie Nisco, RN, BSNRegistered Nurse1184282808
  6. David Nisenbaum, M.D.Psychiatry Physician1851659767
  7. Kristi NishimoriBehavior Technician1245730266
  8. Carolyn Nishimoto, LCSWClinical Social Worker1659605111
  9. Takako Nishimoto, MPTPhysical Therapist1811216963
  10. Karen NishiyamaPhysician Assistant1821919762
  11. Thomas Nitta, RNRegistered Nurse1467527960
  12. Hsin-Tzu NiuBehavior Technician1235994880
  13. Gift NlekoAddiction (Substance Use Disorder) Counselor1578085668
  14. Elizabeth NobisStudent in an Organized Health Care Education/Training Program1720561582
  15. Caridad NodarseMental Health Counselor1346395332
  16. Nealy Noe, MA, MFTI #64906Case Manager/Care Coordinator1174825277
  17. Maritza NoguedaLicensed Vocational Nurse1720620164
  18. Ivan Noguez-RiveraBehavior Technician1932984440
  19. Trisha Nola, PHARMDPharmacist1629688940
  20. Mark Nolte, PTPhysical Therapist1265417109
  21. Michael Angelo Nones, PHARMDPharmacist1588510473
  22. Kassidi NoonanBehavior Technician1053188383
  23. Michele Norberg, MSWClinical Social Worker1194814244
  24. John Nordyke, LVNLicensed Vocational Nurse1467672477
  25. Cera NoriegaBehavior Technician1649126640
  26. Shannon NoriegaCounselor1932537008
  27. Pamela Norman, L.V.N, RASAddiction (Substance Use Disorder) Counselor1508961830
  28. Dylan Normandin, DPTPhysical Therapist1144910035
  29. Brian Norouzi, M.D.Urology Physician1912983818
  30. Lione NorthSocial Worker1497545834
  31. Alexa NortonBehavior Technician1740045269
  32. Courtney Norton, MSWMental Health Counselor1831246099
  33. Gloria Norton, OTROccupational Therapist1790459675
  34. Marissea Branee NortonBehavior Technician1609622687
  35. Marquel NortonPsychologist1891414546
  36. Majed Noshi, RPHPharmacist1720512866
  37. Kamron Nourgostar, D.C.Chiropractor1902271760
  38. Dianna Novela, RNRegistered Nurse1821423641
  39. Michelle Novello, MA, CCC-SLPSpeech-Language Pathologist1578945648
  40. Jessica Novoa, ASWMental Health Counselor1861773715
  41. Alexis Nowak, OTR/LHand Occupational Therapist1972017846
  42. Jennifer Noyola, RNRegistered Nurse1144921719
  43. Deborah NsiluLicensed Vocational Nurse1457932121
  44. Kenneth Nudleman, MDNeurology Physician1558324145
  45. Daniel Nunez, PSY.D.Clinical Psychologist1871960815
  46. David Nunez, M.D.Pediatrics Physician1396047437
  47. Jocelyn NunezBehavior Technician1942037502
  48. Karla Nunez, LICENSED VOCATIONALLicensed Vocational Nurse1265122923
  49. Marion NunezBehavior Technician1710445739
  50. Patricia Nunez, SPA 834Speech-Language Assistant1801039771

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.