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 150 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. Rafael SiaosigarciaMental Health Counselor1265611669
  2. Noel Siat, MFTIMarriage & Family Therapist1033641790
  3. Amber Sibbett-RoblesMarriage & Family Therapist1629583539
  4. Saif Siddiqi, M.D.Diagnostic Radiology Physician1376579433
  5. Pritpal SidhuMental Health Counselor1558435453
  6. Douglas Siegmund, FNP-CFamily Nurse Practitioner1437837879
  7. Elizabeth Sierra, LCSW, PPSCClinical Social Worker1770412926
  8. Lawrence Sieve, O.D.Optometrist1225443732
  9. Brandon Sievers, M.D.Family Medicine Physician1184068389
  10. Eliza SifuentesBehavior Technician1770433906
  11. Timothy SigafoosMarriage & Family Therapist1679762264
  12. Domenic Signorelli, D.P.M.Orthopaedic Foot and Ankle Surgery Physician1053488676
  13. Gabrielle Siguenza, MSMarriage & Family Therapist1700679099
  14. Pierce Sihotang, PTAPhysical Therapy Assistant1487182887
  15. Philip SilaoStudent in an Organized Health Care Education/Training Program1790576478
  16. Eric SilesMental Health Counselor1649323817
  17. Annette SilvaDay Training/Habilitation Specialist1225881220
  18. Brian SilvaBehavior Technician1154286987
  19. Carlos Silva, D.O.Family Medicine Physician1932519733
  20. Denise SilvaMassage Therapist1750793840
  21. Enriqueta Silva, MDSpecialist1326313560
  22. Jaden SilvaTechnician1386592368
  23. Katia SilvaBehavior Technician1225597776
  24. Ryan Silva, IMFTMarriage & Family Therapist1285018796
  25. Selma Silva, PSY.D.Clinical Psychologist1851473888
  26. Cassandra Silver, PSYCHIATRIC NPPsychiatric/Mental Health Nurse Practitioner1508347485
  27. Daphne Silver, BEHAVIOR TECHNICIANBehavior Technician1518692458
  28. Jocelyn SilverioCase Manager/Care Coordinator1255196796
  29. Katie SilvettMental Health Counselor1255615316
  30. Katelynn Simard-BernhardBehavior Technician1427513142
  31. Antonio Simental, ASWSocial Worker1194364968
  32. Cydney SimmonsMental Health Counselor1043777238
  33. Heath SimmonsBehavior Technician1023846573
  34. Rachel SimmonsStudent in an Organized Health Care Education/Training Program1932069747
  35. Robert Simmons, B.S.Mental Health Counselor1972741106
  36. Susan SimmonsMarriage & Family Therapist1528906021
  37. Kevin Simms, LCSW CADC-IIClinical Social Worker1508154980
  38. Mya SimonBehavior Technician1982432548
  39. Alyson SimoneStudent in an Organized Health Care Education/Training Program1831926161
  40. Darla SimonsAddiction (Substance Use Disorder) Counselor1134776784
  41. Erik SimpkinsBehavior Technician1487471926
  42. Beverly SimpsonAddiction (Substance Use Disorder) Counselor1447065271
  43. Joyce Simpson, MA MFTMarriage & Family Therapist1275623407
  44. Robert Simpson, MA MFTMarriage & Family Therapist1114039641
  45. Desiree SimsRegistered Nurse1316769706
  46. Jabari Sims, B.A.Mental Health Counselor1700336179
  47. Raychana Sinclair, RNRegistered Nurse1669847547
  48. David Singer, M.A. CCC-SLPSpeech-Language Pathologist1689062804
  49. Patrick Singer, CAS-IIMental Health Counselor1962632323
  50. Barinder SinghGeneral Practice Registered Nurse1912783101

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.