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 134 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. Vivian LiSpeech-Language Pathologist1053964437
  2. Conan Liang, MDDiagnostic Radiology Physician1821528225
  3. Howard LiangMarriage & Family Therapist1669243697
  4. Julia Liang, NPNurse Practitioner1679917686
  5. Juliana Liang, M.D.Pediatric Emergency Medicine (Pediatrics) Physician1811144637
  6. Meiling Liang, D.C.Chiropractor1437422870
  7. Qingxing LiangStudent in an Organized Health Care Education/Training Program1568215671
  8. Shuang An Liang, MDStudent in an Organized Health Care Education/Training Program1326624073
  9. Shuting LiangBehavior Technician1740147198
  10. Tiffany LiangBehavior Technician1053263962
  11. Patricia LiaoPediatric Critical Care Medicine Physician1972792877
  12. Pei Yu Peggy Liao, LCSWClinical Social Worker1750751574
  13. Shu Yuan Liao, M.D.Anatomic Pathology & Clinical Pathology Physician1376601732
  14. Grace Libardo Alvarez, M.S.Speech-Language Pathologist1609056209
  15. Kaelin LiccardoBehavior Technician1104502103
  16. Jeanne Lichman, PH.D.Psychologist1720041239
  17. Beatriz LiconBehavior Technician1073445326
  18. Elise LiconMarriage & Family Therapist1225855281
  19. Ernesto Licon, MDObstetrics & Gynecology Physician1194254896
  20. Desiree A Lie, MDFamily Medicine Physician1477633519
  21. Valeri Liebig, MA, MFT INTERNMarriage & Family Therapist1679927743
  22. Steven LiemAddiction (Substance Use Disorder) Counselor1124694104
  23. Li-Chang Lien, MDDiagnostic Neuroimaging (Radiology) Physician1376734780
  24. Blair LieuPharmacotherapy Pharmacist1649936717
  25. VI Lieu, M.D.Pediatrics Physician1568633881
  26. Augustus Lievanos, PSYCHOLOGY DOCTORATEClinical Psychologist1841363801
  27. Michael LiewaldAddiction (Substance Use Disorder) Counselor1225501786
  28. Lizbeth Ligason, MDPediatrics Physician1114004884
  29. Lindsey LillStudent in an Organized Health Care Education/Training Program1033910294
  30. Ellen Lim, PNPPediatric Nurse Practitioner1144354739
  31. Emilina Lim, MDPediatric Rheumatology Physician1235289273
  32. Jeremy LimOther Technician1043818131
  33. Jina LimPediatrics Physician1992065361
  34. Leena LimStudent in an Organized Health Care Education/Training Program1295675122
  35. Mary Lim, CRNACertified Registered Nurse Anesthetist1518198266
  36. Paulina Lim, PHDStudent in an Organized Health Care Education/Training Program1205677051
  37. Philip Lim, MDOrthopaedic Trauma Physician1255771747
  38. Maneesha Limaye, M.D., M.P.H.Pediatrics Physician1528421898
  39. Raul LimbaringDental Assistant1801445564
  40. Theresa Limlengco, NPPrimary Care Nurse Practitioner1013787118
  41. Elizabeth Limm, DOAnesthesiology Physician1457844532
  42. Thelma LimonRegistered Nurse1942149083
  43. Rosario LimonesBehavior Technician1770275877
  44. Joyce Limurti, D.OInternal Medicine Physician1215218995
  45. Albert Lin, PASurgical Physician Assistant1316979479
  46. Alison LinBehavior Technician1952253049
  47. Andy Lin, MDInternal Medicine Physician1134879802
  48. Andy LinStudent in an Organized Health Care Education/Training Program1205682234
  49. Bonnie Lin, D.P.M.Foot & Ankle Surgery Podiatrist1902034887
  50. Carol Lin, MDPediatrics Physician1053553347

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.