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 62 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
- Sarah DoBehavior Technician1013804350
- Theresa Do, PHARM.D.Pharmacist1437528676
- Victoria DoBehavior Technician1063114536
- Vivian DoPhysician Assistant1033064373
- Vy DoAssistant Behavior Analyst1013473040
- Anh DoanBehavior Analyst1457986796
- Cynthia DoanOther Technician1770189235
- Kathleen Doan, R.N., N.P.Nurse Practitioner1447295001
- Marie Doan, N.P.Family Nurse Practitioner1518107499
- Michael Doan, MDAnesthesiology Physician1588906036
- Misa DoanClinical Social Worker1346977469
- Nguyen DoanBehavior Technician1407641061
- Thang DoanRegistered Nurse1841957750
- Trung Doan, D.D.S.General Practice Dentistry1306982483
- Victor Doan, MDStudent in an Organized Health Care Education/Training Program1366733693
- Diana Doan-NguyenFamily Nurse Practitioner1225792369
- Daniel Dobalian, M.D.Obstetrics & Gynecology Physician1578743894
- Diane Dobner, O.T.Hand Occupational Therapist1962887620
- Jeffrey Dobyns, M.D.Pediatric Orthopaedic Surgery Physician1427085927
- Margaret DocenaBehavior Technician1609432137
- Tim Dodson, PTPhysical Therapist1619175502
- Katie Doering, MDEmergency Medicine Physician1528488970
- Timothy Doering, D.C.Chiropractor1831297449
- Rajesh DograDentist1801481643
- Stephanie DohMental Health Counselor1811304934
- Thomas Dolan, COOrthotist1245461771
- Matthew Dolich, MDSurgical Critical Care Physician1720168867
- Nancy Dom, M.D.Psychiatry Physician1033441662
- Michele Domico, MDPediatric Critical Care Medicine Physician1932305000
- Vanessa DomingueBehavior Technician1356177273
- Caitlyn DominguezMarriage & Family Therapist1154278257
- Chelsi DominguezBehavior Technician1972297893
- David DominguezBehavior Technician1144199373
- Dianna Rose DominguezBehavior Technician1760344246
- Edith DominguezBehavior Analyst1689339657
- Eduardo DominguezSchool Counselor1386582823
- Iliana Dominguez, FNPNurse Practitioner1932728821
- Lesly DominguezBehavior Technician1386532000
- Melissa Dominguez, MDStudent in an Organized Health Care Education/Training Program1124720487
- Vanessa DominguezMental Health Counselor1285936062
- Ariana DompkeBehavior Technician1013809888
- Pamela DonaghyAudiologist1407413024
- David Donaldson, M.D.Clinical Cardiac Electrophysiology Physician1619196755
- Silvina DonanBehavior Technician1356208227
- Jane Donat, M.D.Neurology with Special Qualifications in Child Neurology Physician1497723498
- Michelle Donato, NPGerontology Nurse Practitioner1477522035
- Huawei Dong, M.D.Critical Care Medicine (Internal Medicine) Physician1528346103
- Siwei Dong, DOVascular Surgery Physician1235690330
- Traci DongPhysical Medicine & Rehabilitation Physician1497475495
- Vincent DongRegistered Nurse1346883014
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.