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 112 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. Ebony NghiemBehavior Technician1861158750
  2. Tan Nghiem, DDSDentist1164679379
  3. Viet Nghiem, DDSGeneral Practice Dentistry1912080409
  4. Chau Ngo, D.D.S.Dentist1164629705
  5. Ernest Ngo, M.D.Radiation Oncology Physician1366454415
  6. Hannah NgoMental Health Counselor1750546784
  7. Hien Ngo, D.D.SDentist1225155096
  8. Huong Ngo, M.D.Psychiatry Physician1760491427
  9. Maurice NgoBehavior Technician1518498203
  10. Michelle NgoBehavior Technician1386403145
  11. Ngoc NgoBehavior Technician1912691726
  12. Tam Ngo, MDDiagnostic Radiology Physician1558308106
  13. Thuy NgoSocial Worker1699290593
  14. Tori NgoPharmacist1629893375
  15. Trang Ngo, B.S.Counselor1194914853
  16. Han NguyBehavior Analyst1982267209
  17. Abigail Nguyen, BEHAVIOR TECHNICIANBehavior Technician1356017263
  18. Adam Nguyen, PAPhysician Assistant1336917285
  19. Aiduy Nguyen, D.C., O.M.D., PH.DChiropractor1912034075
  20. Alexander Nguyen, NONEBehavior Technician1871177956
  21. Andrea Nguyen, BEHAVIOR TECHNICIANBehavior Technician1740810761
  22. Andrew NguyenBehavior Technician1184427098
  23. Andrew NguyenBehavior Technician1932096690
  24. Andy Nguyen, D.O.Family Medicine Physician1497166466
  25. Andy NguyenBehavior Technician1508621384
  26. Angie Nguyen, NPNurse Practitioner1780189670
  27. Anh Nguyen, PHARMDPharmacist1518326271
  28. Anh NguyenMassage Therapist1144113127
  29. Anh-Linh Nguyen, ODOptometrist1124016183
  30. Anhthu NguyenAddiction (Substance Use Disorder) Counselor1669257077
  31. Ann Nguyen, PHDClinical Psychologist1518371053
  32. Annie NguyenCase Manager/Care Coordinator1255512216
  33. Ava NguyenMental Health Counselor1427436815
  34. Bich-Loan Nguyen, D.M.D.Dentist1871503888
  35. Bichtam NguyenPharmacist1407214828
  36. Brandon NguyenPsychiatric/Mental Health Nurse Practitioner1578424727
  37. Casandra Nguyen, BCBABehavior Analyst1598030520
  38. Chau Nguyen, D.C.Chiropractor1023046216
  39. Chau NguyenBehavior Analyst1700771680
  40. Chris NguyenBehavior Technician1710447347
  41. Christan Nguyen, M.A.Marriage & Family Therapist1316370265
  42. Christina NguyenPharmacist1962863860
  43. Christina Nguyen, PHARMDPharmacist1588264915
  44. Christine NguyenMental Health Counselor1255432803
  45. Christine Nguyen, LCSWClinical Social Worker1700563483
  46. Chrystelle Nguyen, REGISTERED NURSECommunity Health Registered Nurse1639363666
  47. Chuc NguyenPharmacist1215650072
  48. Cindy NguyenBehavior Technician1306426176
  49. Danny Nguyen, PHARMDPharmacist1598422040
  50. Danny NguyenStudent in an Organized Health Care Education/Training Program1588314249

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.