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 265 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
- Xiaohui S Zhao, MDAnatomic Pathology & Clinical Pathology Physician1073608154
- Dennis Zheng, MDTrauma Surgery Physician1699271213
- Emily Zheng, MD, DDSDiagnostic Radiology Physician1598230161
- Anni ZhongSocial Worker1316510084
- Elaine Zhou, MDStudent in an Organized Health Care Education/Training Program1497693634
- Helen ZhouPediatrics Physician1477973139
- Sarah ZhouStudent in an Organized Health Care Education/Training Program1285336685
- Xuefei ZhouBehavior Technician1851153035
- Catherine Zhu, M.D.Colon & Rectal Surgery Physician1457705683
- Christina Zhu, MDStudent in an Organized Health Care Education/Training Program1982406989
- Ema ZhuBehavior Technician1922978949
- Lily Zhu, DOStudent in an Organized Health Care Education/Training Program1891444188
- Toby Zhu, MDStudent in an Organized Health Care Education/Training Program1164281895
- Yan ZhuCertified Registered Nurse Anesthetist1457152639
- Muhammad Zia, MDPsychiatry Physician1497851844
- Tuba ZiaBehavior Technician1942033568
- Amin Ziaei, MD, PHDStudent in an Organized Health Care Education/Training Program1700580230
- Zoe Ziegler, PAPhysician Assistant1881156107
- Tamima ZiemerBehavior Technician1972062461
- Cilla Ziemlanski, MSW, LCSWSocial Worker1851914840
- Paul Ziesmer, MDEmergency Medicine Physician1649202714
- Hillary Zieve, M.D.Pediatrics Physician1831500131
- Amanda Zintsmaster, PSY.D.Clinical Psychologist1396101895
- Ronen Zipkin, M.D.Pediatrics Physician1265556765
- Michael ZippwaldMarriage & Family Therapist1225593957
- Chadbourne ZitekStudent in an Organized Health Care Education/Training Program1326894692
- Shelby ZittercobBehavior Technician1427843481
- Zoey Zoerner, PA-CMedical Physician Assistant1932920246
- Gary Zohman, MDOrthopaedic Surgery Physician1396814000
- Anna Zolyan, MDNeurology Physician1467913178
- Farideh Zonouzi, PHARM.DPharmacist1912371873
- Nadia Zuabi, MDEmergency Medicine Physician1639639933
- Avital ZuckerStudent in an Organized Health Care Education/Training Program1346937679
- Nadia Zuhdi, BCBABehavior Analyst1821620717
- Juan Zuluaga, MSProfessional Counselor1972068641
- Aidan ZunigaBehavior Technician1174398275
- Ariel ZunigaMental Health Counselor1366135014
- Christian ZunigaBehavior Technician1386477578
- Eric Zuniga, MDCardiovascular Disease Physician1821558594
- Isabella ZunigaBehavior Technician1508698457
- Jesus ZunigaBehavior Technician1225758071
- Karla ZunigaBehavior Technician1801353545
- Kyra ZunigaBehavior Technician1528871290
- Blanca Zuniga ArteagaBehavior Technician1215644844
- Tamar Zwick, PAMedical Physician Assistant1477068765
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.