NPPES file of Aug 9, 2026

Doctors and health care providers in Orange, CA

13,245 individual NPPES records list a practice address in Orange, 11th of 812 California cities. The largest group is behavior technician: 4,271, 32% of the city's records, against 18% across California. Page 207 of 265.

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

The 8 largest groups in Orange

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

Orange in California

  • Rank in California11th of 812 cities by records
  • Share of the state1.4% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups42% of all records
  • Behavior Technician rank7th of the 10 California cities with the most

Compared with California as a whole, Orange has 7.3× the state's share of other technician records and 0.43× its share of physical therapist records.

Providers in Orange, alphabetically

  1. Diana Rohn, MSN FNPFamily Nurse Practitioner1518682954
  2. America RojasBehavior Analyst1043801988
  3. Dolores Rojas, CPHWCase Manager/Care Coordinator1427325174
  4. Glynis RojasOccupational Therapy Assistant1043979644
  5. John-Louis RojasBehavior Technician1497568224
  6. Justin RojasBehavior Technician1932035334
  7. Nilly RojasBehavior Technician1164289419
  8. Odalis RojasBehavior Technician1477239473
  9. Patricia RojasClinical Social Worker1962684100
  10. Tihare RojasBehavior Technician1447016878
  11. Ruby Rojo PerezBehavior Technician1871347294
  12. Amber RollinsMental Health Counselor1134934896
  13. Victoria RollinsBehavior Technician1932853397
  14. Jacqueline RomanBehavior Technician1043914872
  15. Nazareth RomanBehavior Technician1003674599
  16. Guadalupe Roman GarciaOther Technician1225644438
  17. Nicolo RomaniBehavior Technician1700699147
  18. Tatsumi RomanoAddiction (Substance Use Disorder) Counselor1003572272
  19. Carlos Romano NunezBehavior Technician1467345298
  20. Dionne Romano-Austin, BSN, RN, PHNRegistered Nurse1598280208
  21. Alexander Romero, O.D.Optometrist1427249960
  22. Amanda Romero, LCSWClinical Social Worker1861266355
  23. Annie RomeroRegistered Nurse1205754959
  24. Beatriz RomeroClinical Social Worker1225524416
  25. Cindy Romero, NONEBehavior Technician1407586787
  26. Cynthia RomeroBehavior Technician1568021756
  27. Elizabeth RomeroBehavior Technician1427803212
  28. Fatima RomeroBehavior Technician1881487684
  29. Julio RomeroBehavior Technician1013613843
  30. Leonardo RomeroPeer Specialist1205754025
  31. Luca RomeroBehavior Technician1508611088
  32. Matthew RomeroCommunity Health Worker1053107334
  33. Michelle Romero, M.S.W.Social Worker1487091765
  34. Pauline RomeroOther Technician1962091041
  35. Samantha RomeroBehavior Analyst1245795616
  36. Candice Romley, LCSWClinical Social Worker1528887148
  37. Jasmine RomoBehavior Technician1528955861
  38. Linda RomoSocial Worker1326569674
  39. Viridiana RomoBehavior Technician1780551762
  40. Patricia Ronald Riba, MDPediatrics Physician1063562908
  41. Laverne RoneRehabilitation Practitioner1538339353
  42. Skottlynne RoneySpeech-Language Assistant1467047423
  43. Tommi RonkBehavior Technician1598578742
  44. Leland Ronningen, M.D.Urology Physician1164532032
  45. Daniel RooksBehavior Technician1952176067
  46. Ezaria RoosBehavior Technician1437000437
  47. Emilie Roose, RNPediatric Registered Nurse1730940206
  48. Aracely Roque, PSY. DRehabilitation Practitioner1225296254
  49. Ivanna RoqueBehavior Technician1699472647
  50. Jose Roque, M.D.Gastroenterology Physician1154362010

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

Orange, California appears in the CMS National Plan and Provider Enumeration System with 13,245 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 Orange - 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 Orange 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 Orange is weighted toward Behavior Technician (4,271 clinicians, followed by Student in an Organized Health Care Education/Training Program with 870 and Marriage & Family Therapist with 424). 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, Orange reports roughly 34 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, Case Manager/Care Coordinator is the most prominent one with no provider currently listing a Orange practice address, a coverage gap Orange patients typically fill by traveling to a larger nearby hub.

For Orange 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 Orange, CA?

There are 13,245 registered healthcare providers in Orange, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Orange?

The most common specialties in Orange are Behavior Technician, Student in an Organized Health Care Education/Training Program, Marriage & Family Therapist, Clinical Social Worker, Mental Health Counselor. Behavior Technician has the most providers with 4,271.

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.