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.
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
- Vivian LiSpeech-Language Pathologist1053964437
- Conan Liang, MDDiagnostic Radiology Physician1821528225
- Howard LiangMarriage & Family Therapist1669243697
- Julia Liang, NPNurse Practitioner1679917686
- Juliana Liang, M.D.Pediatric Emergency Medicine (Pediatrics) Physician1811144637
- Meiling Liang, D.C.Chiropractor1437422870
- Qingxing LiangStudent in an Organized Health Care Education/Training Program1568215671
- Shuang An Liang, MDStudent in an Organized Health Care Education/Training Program1326624073
- Shuting LiangBehavior Technician1740147198
- Tiffany LiangBehavior Technician1053263962
- Patricia LiaoPediatric Critical Care Medicine Physician1972792877
- Pei Yu Peggy Liao, LCSWClinical Social Worker1750751574
- Shu Yuan Liao, M.D.Anatomic Pathology & Clinical Pathology Physician1376601732
- Grace Libardo Alvarez, M.S.Speech-Language Pathologist1609056209
- Kaelin LiccardoBehavior Technician1104502103
- Jeanne Lichman, PH.D.Psychologist1720041239
- Beatriz LiconBehavior Technician1073445326
- Elise LiconMarriage & Family Therapist1225855281
- Ernesto Licon, MDObstetrics & Gynecology Physician1194254896
- Desiree A Lie, MDFamily Medicine Physician1477633519
- Valeri Liebig, MA, MFT INTERNMarriage & Family Therapist1679927743
- Steven LiemAddiction (Substance Use Disorder) Counselor1124694104
- Li-Chang Lien, MDDiagnostic Neuroimaging (Radiology) Physician1376734780
- Blair LieuPharmacotherapy Pharmacist1649936717
- VI Lieu, M.D.Pediatrics Physician1568633881
- Augustus Lievanos, PSYCHOLOGY DOCTORATEClinical Psychologist1841363801
- Michael LiewaldAddiction (Substance Use Disorder) Counselor1225501786
- Lizbeth Ligason, MDPediatrics Physician1114004884
- Lindsey LillStudent in an Organized Health Care Education/Training Program1033910294
- Ellen Lim, PNPPediatric Nurse Practitioner1144354739
- Emilina Lim, MDPediatric Rheumatology Physician1235289273
- Jeremy LimOther Technician1043818131
- Jina LimPediatrics Physician1992065361
- Leena LimStudent in an Organized Health Care Education/Training Program1295675122
- Mary Lim, CRNACertified Registered Nurse Anesthetist1518198266
- Paulina Lim, PHDStudent in an Organized Health Care Education/Training Program1205677051
- Philip Lim, MDOrthopaedic Trauma Physician1255771747
- Maneesha Limaye, M.D., M.P.H.Pediatrics Physician1528421898
- Raul LimbaringDental Assistant1801445564
- Theresa Limlengco, NPPrimary Care Nurse Practitioner1013787118
- Elizabeth Limm, DOAnesthesiology Physician1457844532
- Thelma LimonRegistered Nurse1942149083
- Rosario LimonesBehavior Technician1770275877
- Joyce Limurti, D.OInternal Medicine Physician1215218995
- Albert Lin, PASurgical Physician Assistant1316979479
- Alison LinBehavior Technician1952253049
- Andy Lin, MDInternal Medicine Physician1134879802
- Andy LinStudent in an Organized Health Care Education/Training Program1205682234
- Bonnie Lin, D.P.M.Foot & Ankle Surgery Podiatrist1902034887
- Carol Lin, MDPediatrics Physician1053553347
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
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.