Doctors and health care providers in Ventura, CA
4,435 individual NPPES records list a practice address in Ventura, 45th of 812 California cities. The largest group is behavior technician: 543, 12% of the city's records, against 18% across California. Page 60 of 89.
The 8 largest groups in Ventura
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Ventura in California
- Rank in California45th of 812 cities by records
- Share of the state0.5% of California's records
- Specialties present25 or more taxonomy codes
- Top three groups27.1% of all records
Compared with California as a whole, Ventura has 4.3× the state's share of psychiatric/mental health registered nurse records and 0.68× its share of family nurse practitioner records.
Providers in Ventura, alphabetically
- Elaine Ong, DOPsychiatry Physician1770338246
- Joann OntiverosPhysical Therapist1376085803
- Micaela Ontiveros, RBTBehavior Technician1578379491
- Jennifer Ontiveros RosalesBehavior Technician1497543334
- Paul Opare-AddoFamily Medicine Physician1063891190
- John Ora, ODOptometrist1124540489
- Natalie Ora, O.D.Optometrist1891216180
- Michelle Orabueze, MDFamily Medicine Physician1851963433
- Yvette Ordaz, RBTBehavior Technician1992212542
- Anissa OrelloMental Health Counselor1487897302
- Lavana Oriley, CATC IIAddiction (Substance Use Disorder) Counselor1154814358
- Victoria Orloff Tilton, MSW,LCSWClinical Social Worker1598063968
- Celeste OrnelasAddiction (Substance Use Disorder) Counselor1265396170
- Judit Ornelas MontesBehavior Technician1346169919
- Tara OrourkePhysical Therapist1366087165
- Valeria Orozco MoraBehavior Technician1114727005
- Alejandra Ortega, RBTBehavior Technician1265949812
- Elizabeth Ortega, RDNRegistered Dietitian1518389899
- Rosa OrtegaMarriage & Family Therapist1093471757
- Brian Ortiz, RBTBehavior Technician1386449023
- Doniqueka OrtizBehavior Technician1447179247
- Emelyn OrtizMarriage & Family Therapist1619696549
- Isaiah OrtizBehavior Technician1265322895
- Ruben OrtizAddiction (Substance Use Disorder) Counselor1679094825
- Sandra OrtizBehavior Technician1982453890
- Tamra OrtizAddiction (Substance Use Disorder) Counselor1487830212
- Stephanie Ortiz MurilloBehavior Analyst1679153282
- Amber OsbornCase Manager/Care Coordinator1437352564
- Christopher Osborn, BCBABehavior Analyst1881129088
- Logan Osland, DCChiropractor1104966795
- Henry Oster, M.D.Infectious Disease Physician1417992223
- Caitlin OttSpeech-Language Pathologist1003358599
- Jacquelyn Ott, O.T.R. LOccupational Therapist1770796963
- Liz OtterbeinPsychiatric/Mental Health Registered Nurse1639367709
- Roland Ouellette, NPNurse Practitioner1902116239
- Robert Ouwendijk, M.D.Medical Oncology Physician1578627725
- Daryl Ovadia, D.D.S.General Practice Dentistry1780794818
- Patrick Oviedo, PSYCH TECHLicensed Psychiatric Technician1407970106
- Sherwin Owiesy, DMDGeneral Practice Dentistry1538906888
- Luishector OyBehavior Technician1831060235
- Nora Oy, RBTBehavior Technician1699282244
- Andy PachecoBehavior Technician1619893385
- Yvette Padilla, M.D.Obstetrics & Gynecology Physician1396032702
- Christine Padua, OTR/LOccupational Therapist1609548700
- Michael Paglia, DOFamily Medicine Physician1326661505
- Jade PalacioBehavior Analyst1932080447
- Kyle Palermo, DOStudent in an Organized Health Care Education/Training Program1518718873
- Gregory Paley, DCChiropractor1639412653
- Grace Palmer, MDStudent in an Organized Health Care Education/Training Program1235079526
- Diane PalomaresClinical Social Worker1811534233
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
How to read this directory
Ventura, California appears in the CMS National Plan and Provider Enumeration System with 4,435 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 Ventura - 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 Ventura 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 Ventura is weighted toward Behavior Technician (543 clinicians, followed by Marriage & Family Therapist with 426 and Family Medicine Physician with 234). 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, Ventura reports roughly 11.4 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.
For Ventura 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 Ventura, CA?
There are 4,435 registered healthcare providers in Ventura, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Ventura?
The most common specialties in Ventura are Behavior Technician, Marriage & Family Therapist, Family Medicine Physician, Student in an Organized Health Care Education/Training Program, Mental Health Counselor. Behavior Technician has the most providers with 543.
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.