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 141 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 LuongBehavior Technician1861203481
- Eli Luong, MDAnesthesiology Physician1629410519
- Katrina LuongAudiologist1982198123
- Nina LuongPhysician Assistant1366846776
- Peter LuongBehavior Technician1922568476
- Roger LuongStudent in an Organized Health Care Education/Training Program1265374060
- Ryan LuongOther Technician1245995562
- Stephanie LuongBehavior Technician1699407684
- Tevan Luong, MDStudent in an Organized Health Care Education/Training Program1699577593
- Vincent Luong, PHARM.D.Pharmacist1558834101
- Kristelle LusbySurgery Physician1932336278
- Dana LusianiSchool Registered Nurse1508705625
- Jennifer Lusk, MDPediatrics Physician1235366337
- John Luster, MDFamily Medicine Physician1982796439
- John Luther, D.D.S.Dentist1942755673
- Eric Luu, D.D.SGeneral Practice Dentistry1679706071
- Jazlyn LuuOther Technician1750037263
- Michelle LuuBehavior Technician1548129919
- Sarah LuuBehavior Technician1063266484
- Sophia Luu, NONEBehavior Technician1821759168
- Tiffany Luu, MDStudent in an Organized Health Care Education/Training Program1619778800
- Tram LuuBehavior Technician1720644255
- Tuonglan LuyenPharmacist1679973762
- Jeffery Luzar, DDSDentist1538378179
- Ann Ly, MDNeurology Physician1851850812
- Brandon LyBehavior Technician1871460097
- Brian Ly, D.D.S.General Practice Dentistry1831649185
- Catherine LyStudent in an Organized Health Care Education/Training Program1295362085
- Hai Ly, CRNACertified Registered Nurse Anesthetist1194365775
- Helen LyRegistered Dietitian1699218388
- Jane Ly, M.D.Student in an Organized Health Care Education/Training Program1376075325
- Khoa LyBehavior Technician1538930755
- Thu LyBehavior Technician1316818107
- Trish LyBehavior Technician1669368189
- Linda Ly Zaragoza, PA-CPhysician Assistant1821534934
- Christopher Lynch, M.D.Pediatrics Physician1083906168
- Halle LyndgaardStudent in an Organized Health Care Education/Training Program1518802057
- Brian Lynn, PH.D.Clinical Psychologist1972046423
- Grace Lynn, M.D.Student in an Organized Health Care Education/Training Program1427437359
- Christopher Lyon, PH.D,MDOphthalmology Physician1649316753
- Natalie LyonSchool Counselor1609714559
- Alexa LyonsLicensed Vocational Nurse1285454355
- Charlene MaSocial Worker1023842101
- Dang Khoa Ma, O.D.Optometrist1356505721
- Haowei MaBehavior Technician1679422893
- Jacqueline MaBehavior Technician1245046085
- Yilin Ma, MASTERAcupuncturist1649496969
- Alyssa MacBehavior Technician1073388179
- Kathleen MacabitasPsychiatric/Mental Health Nurse Practitioner1578241345
- Alyssa MacaraegBehavior Technician1437019577
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.