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 200 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. Ajay Reddy, M.D.Neonatal-Perinatal Medicine Physician1841685815
  2. Arjun Reddy, MD, MBAClinical Pathology Physician1043833957
  3. Nikitha ReddyStudent in an Organized Health Care Education/Training Program1174326748
  4. Sanjay Reddy, MDInternal Medicine Physician1447206644
  5. Shravani Reddy, M.DGastroenterology Physician1861855686
  6. Uttam Reddy, M.D.Nephrology Physician1487846481
  7. Varalakshmi Y Reddy, MDPediatrics Physician1760562912
  8. Diana Redeemer, MA., LPCC, LPCProfessional Counselor1073692133
  9. Keana RedfearnBehavior Technician1508541608
  10. Robert Redfield, MDTransplant Surgery Physician1326195082
  11. Ashley Reed, LMFTMarriage & Family Therapist1730412735
  12. Cheryl Reed, M.A.,CCC-SLPSpeech-Language Pathologist1285775791
  13. Daniel ReedStudent in an Organized Health Care Education/Training Program1942853205
  14. Jeremy Reed, PTPhysical Therapist1467942714
  15. Joshua Reed, LMFTMarriage & Family Therapist1033874276
  16. Linnea ReedOther Technician1982369351
  17. Mark ReedStudent in an Organized Health Care Education/Training Program1710745989
  18. Mekaylah ReedBehavior Technician1386393643
  19. Thomas ReedChild & Adolescent Psychiatry Physician1578582821
  20. David Reeder, M.D.Internal Medicine Physician1477937779
  21. Sharon Reeder, OTR/LOccupational Therapist1649607581
  22. Ivan Rees, D.D.S.Dental Anesthesiology1679874341
  23. Jessica ReeveBehavior Technician1144866971
  24. Christopher Reeves, PHARM.D.Geriatric Pharmacist1528334000
  25. Jacob RefStudent in an Organized Health Care Education/Training Program1295538676
  26. Daniela Regalado, PHARM. DPharmacist1609282995
  27. Kathryn RegerBehavior Technician1902793243
  28. Amy Regina CervantesBehavior Technician1467305250
  29. Vania ReginoBehavior Technician1043166374
  30. Daniel Reichner, M.D.Specialist1396746707
  31. Craig Reid, PAMedical Physician Assistant1336164102
  32. Savannah Reid, BCBABehavior Analyst1861952426
  33. Andrew Reikes, MDEndocrinology, Diabetes & Metabolism Physician1023198272
  34. Christina ReimersBehavior Technician1942904636
  35. Kristen ReindelMental Health Counselor1336812056
  36. Katie Reisenauer, M.S.Speech-Language Pathologist1063790756
  37. Jamison RemmersBehavior Technician1104755701
  38. Katelin RenchStudent in an Organized Health Care Education/Training Program1013897966
  39. Alison RendonMarriage & Family Therapist1760359426
  40. Juan Rendon, M.D.Emergency Medicine Physician1447510656
  41. Eyenzsi ReneauyBehavior Technician1881566446
  42. Sharath Kumar Reniguntala, M.D.General Practice Physician1003107152
  43. Heidi RensPharmacist1437406014
  44. Alexander Renteria, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1346531829
  45. Austin RenteriaBehavior Technician1730943564
  46. Maria Resendiz ArroyoBehavior Technician1225797210
  47. Heather RetamaOther Technician1154938892
  48. Marco RetiguinBehavior Technician1306711387
  49. Mark Rettenmaier, M.D.Gynecologic Oncology Physician1134166697
  50. Ganna RevegaBehavior Technician1235962515

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.