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 169 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
- Devin NguyenBehavior Technician1740900505
- Diem-Tran Nguyen, MDAllergy & Immunology Physician1215498761
- Diem-Trinh Nguyen, DIEM-TRINH NGUYENGeneral Practice Dentistry1235369786
- Dieu NguyenOther Technician1275122350
- Duyen NguyenOther Technician1073195582
- Dylan NguyenBehavior Technician1043096233
- Eileen Nguyen, CRNACertified Registered Nurse Anesthetist1437790508
- Elaine NguyenBehavior Technician1730852757
- Elizabeth NguyenBehavior Technician1558226795
- Emily Nguyen, MDStudent in an Organized Health Care Education/Training Program1033057872
- Felicia NguyenBehavior Technician1730071507
- Francesco NguyenPharmacist1851035851
- Gia NguyenBehavior Technician1033914429
- Gina NguyenDentist1356873913
- Groyz Nguyen, RPTPhysical Therapist1902065436
- Han Nguyen, PHARMDPharmacist1225564388
- Hang NguyenBehavior Technician1619688421
- Hang NguyenBehavior Technician1063237576
- Hannah Nguyen, MDStudent in an Organized Health Care Education/Training Program1629862875
- Harold NguyenBehavior Technician1275404162
- Harry Nguyen, D.O.Hepatology Physician1003277930
- Helen NguyenPharmacist1235518911
- Helena NguyenObstetrics & Gynecology Physician1124760079
- Hieu Vincent NguyenBehavior Technician1093599755
- Hoa NguyenStudent in an Organized Health Care Education/Training Program1982090551
- Hoang Nguyen, M.D.Child & Adolescent Psychiatry Physician1841240769
- Hoang NguyenClinical Social Worker1871809756
- Hoang Anh Nguyen, M.D.Hospitalist Physician1407147440
- Hong Nguyen, RPHPharmacist1851700595
- Hong-Nhi Nguyen, PAPhysician Assistant1992064703
- Huey NguyenBehavior Technician1750109062
- Hung Nguyen, D.O.Family Medicine Physician1447284526
- Huy NguyenBehavior Technician1639857808
- Huyen Anh Nguyen, LCSWClinical Social Worker1518002906
- Huynh NguyenBehavior Technician1750037271
- Jacqueline NguyenBehavior Technician1881437895
- Jacqueline NguyenBehavior Technician1124915442
- James Nguyen, M.D.Anesthesiology Physician1679880934
- Jane NguyenBehavior Analyst1467037697
- Jasmine NguyenBehavior Technician1093403693
- Jason NguyenBehavior Technician1023813144
- Jason Son Nguyen, DDSGeneral Practice Dentistry1891908521
- Jenifer NguyenBehavior Technician1477490605
- Jennie NguyenBehavior Technician1346939170
- Jennie NguyenBehavior Technician1558167924
- Jenny NguyenSocial Worker1366530438
- Jenny NguyenBehavior Analyst1326505660
- Jenny NguyenStudent in an Organized Health Care Education/Training Program1851150007
- Jimmy Nguyen, SLPSpeech-Language Pathologist1306381074
- Jimmy Nguyen, NPNurse Practitioner1386590958
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.