NPPES file of Aug 9, 2026

Doctors and health care providers in Irvine, CA

7,778 individual NPPES records list a practice address in Irvine, 20th of 812 California cities. The largest group is behavior technician: 2,372, 30% of the city's records, against 18% across California. Page 103 of 156.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Irvine

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Irvine in California

  • Rank in California20th of 812 cities by records
  • Share of the state0.8% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups40.1% of all records

Compared with California as a whole, Irvine has 2.7× the state's share of assistant behavior analyst records and 0.28× its share of student in an organized health care education/training program records.

Providers in Irvine, alphabetically

  1. Rebecca Oliver Roman, PHDClinical Psychologist1447914544
  2. Mary OliverioBehavior Technician1104425701
  3. Sydney Olivier, PT, DPTPhysical Therapist1306716147
  4. Alexander OlivosBehavior Technician1396503629
  5. Kathleen OllivierMarriage & Family Therapist1881984722
  6. Sofie OlmosBehavior Technician1245938042
  7. Celina OlonaBehavior Technician1346974565
  8. Jessica OlorizEmergency Medicine Pharmacist1386568848
  9. Jacob Olsen, NURSE PRACTITIONERPsychiatric/Mental Health Nurse Practitioner1336841204
  10. Jeffrey Olsen, M.D.Physical Medicine & Rehabilitation Physician1376537399
  11. Lisa Olsen, OTD, OTR/LSpecialist1437443728
  12. Madeleine OlsenMarriage & Family Therapist1184424988
  13. Megan Olsen, LCSWClinical Social Worker1275346355
  14. Ashley OlsonBehavior Technician1205562741
  15. Christine Olson, M.A.Occupational Therapist1558654673
  16. Lyndsey Olson, MS, CCC-SLPSpeech-Language Pathologist1265263826
  17. Ryan Olson, OTROccupational Therapist1598226052
  18. Tiffany OlsonBehavior Technician1851950448
  19. Samson Oluseye, PHARM.DPharmacist1730848805
  20. Brandon OlveraBehavior Technician1659092047
  21. Shannon OmalleyBehavior Technician1538898598
  22. Crystal Omboli, PT, DPTPhysical Therapist1629312459
  23. Alison Omel, P.A.Physician Assistant1093856676
  24. Nika Omid, M.D.Ophthalmology Physician1346425964
  25. Lily OnBehavior Analyst1427698810
  26. Lindsey OnaBehavior Technician1396406401
  27. Christine OngBehavior Technician1063171809
  28. Jeanelle Ong, NPAdult Health Nurse Practitioner1598524498
  29. Jenny Ong, O.D.Optometrist1518000231
  30. Jhoanna Marie OngpaucoBehavior Technician1962154476
  31. Suzanne Onikul-Ross, PH.D.Counseling Psychologist1073679007
  32. Isabel OnofreBehavior Technician1285338244
  33. Alondra OntiverosBehavior Technician1073409496
  34. Lori Openshaw, MDPediatrics Physician1952388787
  35. Walter OpfellBehavior Technician1205390432
  36. Ethan OppedahlBehavior Technician1841176872
  37. Tamara Ordas, PT, DPT, MPTPhysical Therapist1679515266
  38. Paulina OrdazBehavior Technician1790353142
  39. Darcy Rose OrdonezBehavior Technician1972499259
  40. Elyse OrdonezSchool Registered Nurse1780508267
  41. Karla Orellana ReyesDoula1851188635
  42. Samara OriBehavior Technician1386482404
  43. Kimberly Orliczky, BCBABehavior Analyst1326456757
  44. Miranda Orosco, MS, OTR/LPediatric Occupational Therapist1205590189
  45. Arefeh OroujiPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1326559279
  46. Samantha OrozcoBehavior Technician1295203966
  47. J Margo Orr, M.D.Internal Medicine Physician1396848941
  48. Carlos OrtegaBehavior Technician1558821322
  49. Joelle Ortega, MSSpeech-Language Pathologist1659993061
  50. Karla OrtegaBehavior Technician1861032781

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

Irvine, California appears in the CMS National Plan and Provider Enumeration System with 7,778 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 Irvine - 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 Irvine 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 Irvine is weighted toward Behavior Technician (2,372 clinicians, followed by Behavior Analyst with 376 and Marriage & Family Therapist with 368). 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, Irvine reports roughly 20 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, Addiction (Substance Use Disorder) Counselor is the most prominent one with no provider currently listing a Irvine practice address, a coverage gap Irvine patients typically fill by traveling to a larger nearby hub.

For Irvine 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 Irvine, CA?

There are 7,778 registered healthcare providers in Irvine, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Irvine?

The most common specialties in Irvine are Behavior Technician, Behavior Analyst, Marriage & Family Therapist, Pharmacist, Physical Therapist. Behavior Technician has the most providers with 2,372.

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.