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 219 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
- Joseph Seiler, MDStudent in an Organized Health Care Education/Training Program1588419154
- Samira Seini, DDSDentist1902061047
- Weston SeippEmergency Medicine Physician1447574363
- Nicole Seitz, LMFTMarriage & Family Therapist1003646720
- Thomas Seitz, LMFTMarriage & Family Therapist1770504946
- Rim Sekik, DDSDentist1790938504
- Sarah Sela-Herman, MDPediatric Gastroenterology Physician1710075502
- Scott SelfStudent in an Organized Health Care Education/Training Program1871172692
- Jonelle Sellers, PH.D.Clinical Psychologist1255411443
- Rita Selymes, DDSGeneral Practice Dentistry1851543573
- Alyssa SemerdjianBehavior Technician1588406524
- Saadia SemienBehavior Technician1073323226
- Aaron SenBehavior Technician1699551697
- Hiruni Senerath, NONEBehavior Technician1194465351
- Sarah SennettBehavior Technician1225882640
- Lindsey Senozan, M.D.Anesthesiology Physician1821521410
- Cagin Senturk, MDDiagnostic Radiology Physician1548553001
- Angela SeoBehavior Technician1578388179
- Minji SeokInternal Medicine Physician1861133308
- Namju Seong, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1174907158
- Lynette Sequeira, MDEmergency Medicine Physician1255357158
- Ricky SequeiraDay Training/Habilitation Specialist1073354536
- Fernando SerafinSpecialist1386422772
- Analisa Serna, L.C.S.W.Clinical Social Worker1942753546
- Suzanne SernaBehavior Technician1154138675
- Hilary SerotaSpeech-Language Pathologist1386251247
- Alma SerranoBehavior Technician1912615899
- Alondra Serrano, PHDPsychologist1013418227
- Christian SerranoBehavior Technician1922984657
- Janell SerranoBehavior Technician1316803430
- Judy SerranoBehavior Technician1679252761
- Rogelio Serrano, LMFTMarriage & Family Therapist1285895110
- Serafin SerranoMental Health Counselor1285766949
- Vincent SerranoBehavior Technician1699635755
- Bienvenida Serrano-Cruz, MDDiagnostic Radiology Physician1447330691
- Bianca Serrano-PerezBehavior Technician1093520959
- Andrew SerratoBehavior Technician1437906062
- Jennifer SerratoOther Technician1235885724
- Julian ServinBehavior Technician1417757352
- Kimberly ServinBehavior Technician1669304499
- Gladys Servin De La Mora, RSLDOptician1669037032
- Jason Sesi, PA-CPhysician Assistant1336570712
- Jeffrey SesmaBehavior Technician1487378006
- Andrea Session, CERT HAIR LOS SPECIAProsthetics Case Management1053878249
- Mafa SetiBehavior Technician1578254694
- Arnold Seto, M.D.Interventional Cardiology Physician1215081807
- Jones Seto, OTR/LPhysical Rehabilitation Occupational Therapist1295194926
- Natalie Seto, NPPediatric Nurse Practitioner1598417248
- Skylar SeveranceBehavior Technician1396589644
- Brenda SeversonEmergency Registered Nurse1184077406
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.