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 117 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. Rosalinda NunezDay Training/Habilitation Specialist1194583732
  2. Sandy NunezDay Training/Habilitation Specialist1871113175
  3. Stephanie Nunez, ASWClinical Social Worker1023647575
  4. Sylvia NunezMarriage & Family Therapist1891554697
  5. Veronica NunezBehavior Technician1730016072
  6. Yaniz NunezBehavior Technician1942187034
  7. Helen Nunez SalasBehavior Technician1396552063
  8. Luna NunoBehavior Technician1821752486
  9. Jade NuyenBehavior Analyst1639617723
  10. Brock Nyquist, C.R.N.A., MSNCertified Registered Nurse Anesthetist1134218969
  11. Neill Nyssen, M.S.Counselor1124257472
  12. Patricia O'ConnellCounselor1215130489
  13. Alda O'Connor, FNPFamily Nurse Practitioner1265603294
  14. Jennifer O'Herin, PAMedical Physician Assistant1073542262
  15. Theresa O'Hern, PTPediatric Physical Therapist1134464654
  16. Thomas O'LearyAddiction (Substance Use Disorder) Counselor1467927574
  17. Elizabeth O'Malley, LMFTMarriage & Family Therapist1619388444
  18. Sean O'MalleyRehabilitation Practitioner1306410923
  19. Dadhri O'Neal, LMFTMarriage & Family Therapist1699979302
  20. Luanne O'Neil, RRWAddiction (Substance Use Disorder) Counselor1023227790
  21. Eavan O'NeillBehavior Technician1952221319
  22. Oluseyi ObadeyiInterventional Pain Medicine Physician1972182459
  23. Nathan ObbardsCase Manager/Care Coordinator1437567708
  24. Aisha ObeidallahBehavior Technician1235958075
  25. Kaitlyn Ober, M.S. CCC-SLPSpeech-Language Pathologist1306681630
  26. Ramona Obeso, PA-CPhysician Assistant1902092596
  27. Sabrina ObrienBehavior Technician1770450165
  28. Jeanne Obryan, MFTMarriage & Family Therapist1821112749
  29. Guadalupe OcampoCounselor1194117689
  30. Lesly OcampoBehavior Technician1255228862
  31. Ana Ocampo-AlcantaraBehavior Technician1811754583
  32. Arianna OcchipintiBehavior Technician1700627866
  33. Eric OcegueraAddiction (Substance Use Disorder) Counselor1346170263
  34. Robert OcegueraAddiction (Substance Use Disorder) Counselor1457005258
  35. Kent OchiaiProsthodontics1558489856
  36. Arlyne OchoaMental Health Counselor1265948384
  37. Eric OchoaCounselor1700288008
  38. Ethan OchoaPhysical Therapy Assistant1528955507
  39. Katherine OchoaRehabilitation Practitioner1174409544
  40. Marcus OchoaDentist1114792256
  41. Margarita OchoaCommunity Health Worker1346086337
  42. Norma OchoaAddiction (Substance Use Disorder) Counselor1568551505
  43. Rodrigo Ochoa, MFTMarriage & Family Therapist1952726135
  44. Salma OchoaBehavior Technician1144788449
  45. Yasmin OchoaBehavior Technician1700552023
  46. Gabriela Ochoa-LopezMarriage & Family Therapist1487411617
  47. Sheila Marie Oco, BCBABehavior Analyst1851758619
  48. Ryan OconnellMedical Physician Assistant1134770811
  49. Erika OctavianoRehabilitation Practitioner1194538090
  50. Mark Odom, LCSWClinical Social Worker1881780542

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.