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 92 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. Walter LopezBehavior Technician1164008736
  2. Weena Lopez, D.D.SDentist1871934125
  3. Yazmine Lopez, COTAOccupational Therapist1215233671
  4. Jennifer Lopez AguilarBehavior Technician1619779055
  5. Jorge Luis Lopez CarmonaCommunity Health Worker1346923281
  6. Dalila Lopez OrtegaBehavior Technician1891381851
  7. Lynda Lopez-Freyre, NPNurse Practitioner1730425695
  8. Karina Lopez-IllescasCase Manager/Care Coordinator1508516782
  9. Jose Lopez-Lizarraga, MDDevelopmental - Behavioral Pediatrics Physician1073937710
  10. Wendy Lopez-Moreno, NONEBehavior Technician1003581737
  11. Courtney LordenMental Health Counselor1417438284
  12. Isabel Lorenzana-MontesCounselor1659702488
  13. Catie LorenziniAssistant Health Information Record Technician1699215616
  14. Yvonne Loria, SLPASpeech-Language Assistant1417254996
  15. Stephanie LosckoSocial Worker1326593070
  16. Kelsey Losey, ASWClinical Social Worker1669185666
  17. Justin Loughman, MFTMarriage & Family Therapist1851625545
  18. Maria LouscherCommunity Health Worker1679319065
  19. Conor LowBehavior Technician1649142555
  20. Julie Low, MDInternal Medicine Physician1972682698
  21. Liberty Lowe, M.D.Pediatrics Physician1801089578
  22. Nelson Lowe, D.D.S.Prosthodontics1710985031
  23. Brandon LowenbergBehavior Technician1710744073
  24. Michael Lowenstein, MDPain Medicine (Anesthesiology) Physician1174630453
  25. Cheryl Lowes, RNCommunity Health Registered Nurse1366623183
  26. Gillian Loy, MFTIMarriage & Family Therapist1861780835
  27. Marinella Loyola, ABATBehavior Technician1962062299
  28. Damian LozaCase Manager/Care Coordinator1124536883
  29. Gabriel LozaSocial Worker1104247014
  30. Gustavo Loza, PA-CPhysician Assistant1700027703
  31. Lucio Loza, M.D.Adult Medicine Physician1134352727
  32. Deana LozanoMental Health Counselor1881834398
  33. Diana LozanoClinical Social Worker1811413040
  34. Irma Lozano, PH.D.Psychologist1396982799
  35. Presley LozanoBehavior Technician1831785880
  36. Maria Alejandra Lozano OrtizMarriage & Family Therapist1285287490
  37. Guadalupe LozoyaBehavior Technician1508527136
  38. Cheng-Ru Lu, DDSGeneral Practice Dentistry1538396833
  39. Dich Lu, DDSGeneral Practice Dentistry1467740076
  40. Jennifer LuBehavior Technician1144162736
  41. Ming-Lung Lu, NPAdult Health Nurse Practitioner1194116970
  42. Trang Luc, D.O.Family Medicine Physician1922330455
  43. Marshawn LucasLicensed Psychiatric Technician1164372256
  44. Mariah LucioDay Training/Habilitation Specialist1023763109
  45. Jaime Ludmir, M.DObstetrics & Gynecology Physician1265539712
  46. Gianina Ludusan, RN,BSN,PHNRegistered Nurse1629372636
  47. Itzel LuevanosMental Health Counselor1245993369
  48. Julia Luft, MFCMarriage & Family Therapist1265758817
  49. Shaneen LugassySpeech-Language Pathologist1588989552
  50. Alison Lugo, B.S.Counselor1801058896

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.