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 70 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. Kathy Hong-LeeSpeech-Language Pathologist1962343459
  2. Marissa HonjiyoMarriage & Family Therapist1396367017
  3. Megan HonomichlBehavior Technician1760167571
  4. Robert Hoo, MDAnesthesiology Physician1952496218
  5. Graeme HookerBehavior Technician1265107783
  6. Golnoush Hooshvar, PHDMarriage & Family Therapist1316453863
  7. Alexandra Hoover, BCBABehavior Analyst1316331440
  8. Myra Hoover, M.A., LMFTMarriage & Family Therapist1427290469
  9. Darrel Hopkins, D.O.Family Medicine Physician1033204318
  10. Luz Horn, REGISTERED NURSERegistered Nurse1962680272
  11. Adena Horne, LMFTMarriage & Family Therapist1164902656
  12. David Horner, PH.DPsychologist1942281993
  13. Donna Horner, RNAdult Psychiatric/Mental Health Registered Nurse1336231604
  14. Stephanie HornerAddiction (Substance Use Disorder) Counselor1770111916
  15. Chia Ta HorngAcupuncturist1134261720
  16. Connie Hornyak, L.C.S.W.Clinical Social Worker1043363674
  17. Elliot Horowitz, MFTMarriage & Family Therapist1518052711
  18. Lorena HortaBehavior Technician1043107576
  19. Michael HoskinsMarriage & Family Therapist1013678762
  20. Naomi HossainBehavior Analyst1356006928
  21. Armaghan Hosseinizadeh, BCBABehavior Analyst1023429180
  22. Yufeng Hou, LA.CAcupuncturist1568693018
  23. Jazmin HourihanPeer Specialist1528832912
  24. Karilyn House, D.D.S.Pediatric Dentistry1730129818
  25. Iyad Houshan, M.D.Internal Medicine Physician1497773287
  26. Wesam Houshan, MDInternal Medicine Physician1356467112
  27. Codee HoustonBehavior Technician1073378626
  28. Jensen HoustonPhysician Assistant1770138950
  29. Livia HoustonClinical Social Worker1083023329
  30. Kyrstin HowardAddiction (Substance Use Disorder) Counselor1730903212
  31. Leslie Howard, RNRegistered Nurse1790628170
  32. Tina Howard, LCSWClinical Social Worker1851720320
  33. Yvonne Howard, MA, OTR/LPediatric Occupational Therapist1841245222
  34. Kandis HowellAddiction (Substance Use Disorder) Counselor1649440769
  35. Rosalba HowellMarriage & Family Therapist1023272465
  36. Wyland HowellBehavior Technician1134945934
  37. Hunter HowellsBehavior Technician1447012380
  38. Maidah HsenCommunity Health Worker1346890373
  39. Justine Hsieh, ODOptometrist1619502705
  40. Lisa Hsieh-Atlas, PHARMD.Pharmacist1518405679
  41. William HsuStudent in an Organized Health Care Education/Training Program1750777371
  42. Ying Feng Hsu, PHARM DPharmacist1386179703
  43. Myat Htoo, D.D.SGeneral Practice Dentistry1518956986
  44. Diana HuaMental Health Counselor1073815544
  45. Kiera HuaBehavior Technician1285419952
  46. Daniel Huang, M.D.Hematology & Oncology Physician1154427920
  47. Eric HuangBehavior Technician1124963954
  48. Linda HuangClinical Social Worker1922356195
  49. Matthew HuangPsychiatric/Mental Health Nurse Practitioner1245167576
  50. Ti-An HuangMarriage & Family Therapist1427142108

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.