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 240 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
- Chinh TranAnesthesiology Physician1952920803
- Chloe TranBehavior Analyst1811455504
- Crystal TranBehavior Technician1689590473
- Daniel Tran, DOStudent in an Organized Health Care Education/Training Program1487408506
- Demi TranNeurology Physician1003235219
- Diana TranBehavior Technician1578430401
- Edward Tran, ODOptometrist1124558069
- Ellie TranBehavior Technician1053021170
- Elliott TranBehavior Analyst1811611981
- Evelyn TranCounselor1003076316
- Faustina TranBehavior Technician1891683827
- Han TranBehavior Technician1780822957
- Hanh TranAssistant Behavior Analyst1376120469
- Hau TranBehavior Technician1174318919
- Hung Tran, M.D.Pediatric Hematology & Oncology Physician1942408562
- Hung TranPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1922976877
- Huy Thai Tran, DOFamily Medicine Physician1578657847
- Isabelle TranBehavior Technician1144969445
- Ivy TranBehavior Technician1639865389
- Jane Tran, MDPediatrics Physician1164282133
- Jasmine TranBehavior Technician1518796325
- John Tran, M.D.Neonatal-Perinatal Medicine Physician1477780864
- John TranBehavior Technician1982576542
- Johnny Tran, PHARMDPharmacist1093301285
- Jonathan TranBehavior Technician1770467573
- Julie TranCase Manager/Care Coordinator1396926341
- Karen TranStudent in an Organized Health Care Education/Training Program1538021001
- Katelin TranAssistant Behavior Analyst1699430942
- Katelynn TranBehavior Technician1164170536
- Katherine TranBehavior Technician1952050247
- Katherine TranBehavior Technician1821833369
- Kaylee TranBehavior Technician1659220432
- Kim Tran, RN, APNNurse Practitioner1891235230
- Kim TranBehavior Analyst1568071090
- Krystal TranBehavior Technician1619706413
- Lauren Tran, PHARMDPharmacist1073798708
- Lisa Tran, DDS MDOral & Maxillofacial Surgery (D.M.D.)1588980767
- Loan TranBehavior Technician1619851219
- Mai-Lan TranStudent in an Organized Health Care Education/Training Program1245926583
- Mark Tran, M.D.Nuclear Radiology Physician1316382377
- Melissa TranCertified Registered Nurse Anesthetist1720890593
- Michael Tran, MDSpecialist1073552295
- Michelle Tran, PHARM.D.Pharmacist1962947119
- Michelle TranBehavior Technician1245051689
- Mimi TranBehavior Analyst1407324361
- Minh TranBehavior Technician1013752559
- Nancy Tran, NONEBehavior Technician1659016780
- Nancy TranBehavior Technician1871287557
- Nga TranPharmacist1396031159
- Ngoc TranCase Manager/Care Coordinator1720229099
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.