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 114 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. Khanh Nguyen, PHARMDPharmacist1346632023
  2. Khanh Nguyen, RNRegistered Nurse1245602820
  3. Khanhi Nguyen, MSWCounselor1679875777
  4. Khoi Nguyen, DDSDentist1487864856
  5. Khoi NguyenBehavior Technician1598684854
  6. Kieu Nguyen, PHARM.DPharmacist1609249796
  7. Kieu Hanh Nguyen, RNRegistered Nurse1316048242
  8. Kim Nguyen NguyenBehavior Technician1134946676
  9. Krystal Nguyen, D.M.D.General Practice Dentistry1558733923
  10. Krystal NguyenPeer Specialist1124634134
  11. Lam NguyenBehavior Technician1497386692
  12. Lena NguyenSocial Worker1457129017
  13. Linda NguyenBehavior Technician1558223867
  14. Lisa Nguyen, DDSDentist1508912874
  15. Lucia Nguyen, B.ACounselor1689839037
  16. Lucyanh NguyenBehavior Technician1003603283
  17. Lynna NguyenAssistant Behavior Analyst1578493177
  18. Manuel Nguyen, DDSDentist1720175003
  19. Mary Nguyen, M.A.Mental Health Counselor1689995102
  20. Meghan NguyenBehavior Technician1801760939
  21. Melissa Nguyen, DDSDentist1467170365
  22. Michael Nguyen, M.D.Surgery Physician1528386695
  23. Michelle Nguyen, PT, DPTPhysical Therapist1568129104
  24. Mindy NguyenOccupational Therapist1629486147
  25. Natalie Nguyen, MSWClinical Social Worker1134298144
  26. Natalie Nguyen, O.DOptometrist1790813871
  27. Ngoc Nguyen, RN MSN FNP-BC CMSRNFamily Nurse Practitioner1891216370
  28. Ngoc-Thuy Nguyen, PH.DForensic Psychologist1851063028
  29. Nicholas NguyenInfectious Disease Physician1689239584
  30. Nicholas Nguyen, BEHAVIOR TECHNICAINBehavior Technician1215512124
  31. Nikki NguyenPharmacist1821764606
  32. Oanh NguyenPharmacist1265805899
  33. Paul Nguyen, B.ACounselor1760680805
  34. Peter Nguyen, DPTPhysical Therapist1346742103
  35. Peter NguyenEmergency Registered Nurse1003377250
  36. Phuong NguyenOccupational Therapist1902368475
  37. Quang Binh Nguyen, MDFamily Medicine Physician1982002598
  38. Quoc Nguyen, D.D.S.General Practice Dentistry1942330469
  39. Quy Nguyen, M.D.Internal Medicine Physician1033289699
  40. Quyen NguyenPharmacist1558733733
  41. Regina NguyenBehavior Technician1508642174
  42. Ronald Nguyen, MDAnesthesiology Physician1720436736
  43. Ryan Nguyen, BEHAVIOR TECHNICIANBehavior Technician1700557675
  44. Sarah NguyenClinical Social Worker1861771545
  45. Shayla NguyenStudent in an Organized Health Care Education/Training Program1215713110
  46. Sophia Nguyen, D.O.Student in an Organized Health Care Education/Training Program1578323580
  47. Stacey Nguyen, PHARM DPharmacist1194009712
  48. Suzanne Nguyen, MDFamily Medicine Physician1164605713
  49. Tam NguyenWomen's Health Nurse Practitioner1407562853
  50. Tammy Nguyen, PA-CPhysician Assistant1073980843

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.