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 115 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. Tan Nguyen, PHARM DPharmacist1689396574
  2. Thai Nguyen, M.D.Internal Medicine Physician1467547042
  3. Thanh Nguyen, DDSGeneral Practice Dentistry1467676312
  4. Thanh Lan Nguyen, PHARMDPharmacist1932613924
  5. Theresa Thanh Nguyen, M.D.Internal Medicine Physician1003893801
  6. Thu Nguyen, PHARMDPharmacist1669011946
  7. Thu-Thuy NguyenRegistered Nurse1154496578
  8. Thuy Nguyen, M.D.Family Medicine Physician1891015871
  9. Tony Nguyen, NPMedical-Surgical Registered Nurse1962289991
  10. Tracey Nguyen, BEHAVIOR ANALYSTBehavior Analyst1851759369
  11. Trang Nguyen, M.D.Child & Adolescent Psychiatry Physician1245329580
  12. Triet Nguyen, PA-CMedical Physician Assistant1619167558
  13. Trinh Thi NguyenClinical Social Worker1912214891
  14. Trong NguyenCommunity Health Registered Nurse1811733439
  15. Truman Nguyen, D.D.S.General Practice Dentistry1326520735
  16. Trung Nguyen, D.D.S.General Practice Dentistry1144359845
  17. Tuan Nguyen, PHARM.D.Pharmacist1659655264
  18. Tung Nguyen, D.O.Family Medicine Physician1285679449
  19. Tung Nguyen, D.D.SGeneral Practice Dentistry1811015118
  20. Tuong Nguyen, PH.D.Clinical Psychologist1124030150
  21. Tuong-Vy NguyenMedical Physician Assistant1518564665
  22. Tuyet-Binh Nguyen, D.D.S.General Practice Dentistry1881790152
  23. Uyen-Phuong Nguyen, M.D.Student in an Organized Health Care Education/Training Program1184985236
  24. Valerie Nguyen, DMDGeneral Practice Dentistry1205978897
  25. Van Nguyen, DOObstetrics & Gynecology Physician1205845237
  26. Van NguyenMental Health Counselor1144357443
  27. Van Nguyen, RPHPharmacist1801511134
  28. Van Laurie Nguyen, PA-CPhysician Assistant1316296932
  29. Vannessa NguyenSocial Worker1366941536
  30. Victoria NguyenBehavior Technician1730967837
  31. Vincent Nguyen, MSWMental Health Counselor1700419033
  32. Vinh Nguyen, RNCommunity Health Registered Nurse1801076385
  33. Vinnie NguyenPharmacist1699283465
  34. Vivian Nguyen, RNCase Management Registered Nurse1285707398
  35. Xuan Nguyen, PT, DPTPhysical Therapist1346704772
  36. Zoey Nguyen, BEHAVIORAL THERAPISTBehavior Technician1962061093
  37. Tiffany Nguyen-Ho, RPHPharmacist1386927937
  38. Diana Nguyen-RuffaloRegistered Nurse1598345753
  39. Lynn Nguyen-Samrith, ODOptometrist1982436192
  40. Dilanie Nguyen-TranBehavior Technician1538930748
  41. Diemchi Nguyenphuc, MDObstetrics & Gynecology Physician1629104930
  42. Elsie Nguyensi, RN, PHNCommunity Health Registered Nurse1316139462
  43. Maria NicholasCommunity Health Registered Nurse1104025030
  44. Diana NicholsSocial Worker1265514293
  45. Meagan NicholsonMental Health Counselor1588142947
  46. Lena Nicklas, LCSWClinical Social Worker1942510011
  47. Dylan NicoletteAddiction (Substance Use Disorder) Counselor1144903832
  48. Duane Nielsen, ARRT, CRTRadiologic Technologist1073684809
  49. Nancy Nieto, SLPASpeech-Language Assistant1912543372
  50. Stacey Nijst, CADCA, CCJPSpecialist1770746539

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.