Doctors and health care providers in Irvine, CA
7,778 individual NPPES records list a practice address in Irvine, 20th of 812 California cities. The largest group is behavior technician: 2,372, 30% of the city's records, against 18% across California. Page 102 of 156.
The 8 largest groups in Irvine
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Irvine in California
- Rank in California20th of 812 cities by records
- Share of the state0.8% of California's records
- Specialties present25 or more taxonomy codes
- Top three groups40.1% of all records
Compared with California as a whole, Irvine has 2.7× the state's share of assistant behavior analyst records and 0.28× its share of student in an organized health care education/training program records.
Providers in Irvine, alphabetically
- Matthew O'BymachowBehavior Technician1811713720
- Tara O'Connell, MDEmergency Medicine Physician1629245790
- Alexis O'ConnorBehavior Analyst1922640200
- Cara O'MahonyBehavior Technician1659006773
- Nicholas O'Neal, A.T.CAthletic Trainer1750523288
- Sean O'Neill, LMFTMarriage & Family Therapist1215202304
- Maryellen O'Reilly, M.D.General Practice Physician1780851808
- Zackery Oakey, MDOphthalmology Physician1720320872
- Sarah Obaid, NPFamily Nurse Practitioner1477387249
- Kaitlyn ObergBehavior Technician1568248052
- Olivia ObermeyerBehavior Technician1578041851
- Trevor ObloukBehavior Technician1396409744
- Lizeth OcampoBehavior Technician1639896459
- Natalia OcampoBehavior Technician1063151835
- Maria Ocampo BritoBehavior Technician1053982371
- Arianna OchoaBehavior Technician1851878060
- Celeste OchoaBehavior Technician1336038371
- Gavin OctavianoBehavior Technician1801392444
- Beverly Oden, LPCCProfessional Counselor1578350880
- Joan Odom, MDChild & Adolescent Psychiatry Physician1740216803
- Michael OgdenBehavior Technician1942023668
- Jessica Rene OgenaBehavior Analyst1598346488
- Claire OhBehavior Analyst1609588003
- Daniel Oh, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1932396611
- Daniel Oh, RPHPharmacist1225567639
- David Oh, PMHNP - BCPsychiatric/Mental Health Nurse Practitioner1730764192
- Grace OhPhysician Assistant1790560910
- Moonmock Oh, M.D.Family Medicine Physician1902838881
- Sangduk Oh, DDS, PHDGeneral Practice Dentistry1831386671
- Steve OhDentist1457518136
- Tae Oh, LACAcupuncturist1487929329
- William Oh, M.D.Colon & Rectal Surgery Physician1598100323
- Youngnam Oh, L.ACAcupuncturist1336887538
- Jun-Ichi Ohara, M.D., PH.D.Gastroenterology Physician1578665667
- Junko Ohara, MDInternal Medicine Physician1609434075
- Jonathan Oishi, D.O.Internal Medicine Physician1396109781
- Sumire OkadaBehavior Technician1790392637
- Nusheen OkamotoPhysical Therapist1578440970
- Chieko OkawaBehavior Technician1508797895
- Ryu OkazakiBehavior Technician1922730027
- Christy OkoloBehavior Technician1669192407
- Maureen Okoro, PHARM. DPharmacist1629391677
- Mikel Okouchi, D.C.Chiropractor1831109768
- Shea OlayosPhysical Therapist1710779046
- Isabella Oldham, RDN, LDNRegistered Dietitian1508686023
- Frida Olea GallegosBehavior Technician1689444127
- Cindy OlivaBehavior Technician1811860646
- Carmen OlivaresBehavior Technician1659156206
- Cecilia OlivaresBehavior Technician1528770088
- Jacquelyn OliveBehavior Technician1396416723
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
How to read this directory
Irvine, California appears in the CMS National Plan and Provider Enumeration System with 7,778 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 Irvine - 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 Irvine 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 Irvine is weighted toward Behavior Technician (2,372 clinicians, followed by Behavior Analyst with 376 and Marriage & Family Therapist with 368). 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, Irvine reports roughly 20 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, Addiction (Substance Use Disorder) Counselor is the most prominent one with no provider currently listing a Irvine practice address, a coverage gap Irvine patients typically fill by traveling to a larger nearby hub.
For Irvine 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 Irvine, CA?
There are 7,778 registered healthcare providers in Irvine, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Irvine?
The most common specialties in Irvine are Behavior Technician, Behavior Analyst, Marriage & Family Therapist, Pharmacist, Physical Therapist. Behavior Technician has the most providers with 2,372.
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.