2026 data CMS NPPES NUCC Taxonomy

Doctors in Oakland, CA

Compiled from official public sources by the PlainDoctor editorial team.

Active healthcare providers in Oakland sourced from the CMS NPPES weekly file, no proprietary ratings, no editorial scores. NPI counts, specialty distribution, and primary practice addresses refreshed each release.

18,012
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Student in an Organized Health Care Education/Training Program
Top specialty
1,521 providers
California
State
CA

18,012 healthcare providers across 20 specialties

Oakland, California appears in the CMS National Plan and Provider Enumeration System with 18,012 registered healthcare providers spanning 20 distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Oakland - 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 Oakland 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 2023 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in Oakland is weighted toward Student in an Organized Health Care Education/Training Program (1,521 clinicians, followed by Marriage & Family Therapist with 1,290 and Mental Health Counselor with 1,250). 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, Oakland reports roughly 46.2 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.

Within California, Oakland ranks #7 of 805 cities tracked by provider count, accounting for 1.9% of the state's registered providers. Of California's most common specialties, General Practice Dentistry is the most prominent one with no provider currently listing a Oakland practice address, a coverage gap Oakland patients typically fill by traveling to a larger nearby hub.

For Oakland patients, this directory is most useful as a starting shortlist, searching by specialty narrows the 690-taxonomy roster to clinicians with the relevant training, and each provider page links to NPI, state licensing boards, and the NPPES registry for credential verification. 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, so listing details may be out of date; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients. Nothing on this page substitutes for consulting a licensed clinician about your personal health decisions.

18,012
Providers
20
Specialties
#7
of 805 CA cities
1.9%
of CA providers
46.2
Per 100K (state)

Which specialties are most common in Oakland

Student in an Organized Health Care Education/Training Program 1,521
Marriage & Family Therapist 1,290
Mental Health Counselor 1,250
Counselor 996
Behavior Technician 976
Clinical Social Worker 949
Community Health Worker 571
Case Manager/Care Coordinator 512
Registered Nurse 492
Internal Medicine Physician 442
Social Worker 422
Pharmacist 410
Behavior Analyst 385
Addiction (Substance Use Disorder) Counselor 370
Pediatrics Physician 331
Physical Therapist 325
Clinical Psychologist 310
Psychologist 246
Acupuncturist 232
Specialist 210

Healthcare Providers (Page 239)

Name
Felice O'Ryan, DDS
Oral and Maxillofacial Surgery (Dentist)
Caroline O'Sullivan, MFTI
Mental Health Counselor
Clare O'Toole
Marriage & Family Therapist
Julian Oakley
Community Health Worker
Rosesharon Oates
Massage Therapist
Demetrie Oaxton
Mental Health Counselor
Edward Obbard, PSY.D.
Clinical Psychologist
Sara Obeid, MD, MPH
Internal Medicine Physician
Ainsley Obenaus
Community Health Worker
Charles Obeng
Driver
Hargun Oberai
Student in an Organized Health Care Education/Training Program
Ogochukwu Obi
Student in an Organized Health Care Education/Training Program
Bianca Obiakor, MD
Student in an Organized Health Care Education/Training Program
Cajethan Obidah, LMFT
Marriage & Family Therapist
Susana Obispo
Addiction (Substance Use Disorder) Counselor
Elizabeth Obolensky, M.S.
Genetic Counselor (M.S.)
Diana Obrinsky, M.D.
Pediatrics Physician
Theodor Obukhov
Behavior Technician
Jennifer Obyrne
Mental Health Counselor
Danica Ariel Ocampo
Behavior Technician
Edna Ochoa
Behavior Technician
Karie Ochoa, MSW
Clinical Social Worker
Richard Ochoa, PA
Emergency Clinical Nurse Specialist
Ruth Ochoa, M.D.
Hospice and Palliative Medicine (Emergency Medicine) Physician
Timothy Ochoa
Student in an Organized Health Care Education/Training Program
Veronica Ochoa
Clinical Social Worker
Joy Octaviano, MS, RN, AOCNS
Oncology Registered Nurse
Maddy Oden, DOULA CERTIFICATION
Community Health Worker
Noah Oderberg, PH.D.
Psychologist
Mireia Odlin
Counselor
Doris Odo
Licensed Vocational Nurse
Sarah Oehler
Mental Health Counselor
Rudolph Oehm, MD
Internal Medicine Physician
Caitlyn Ofalla-Hernando
Student in an Organized Health Care Education/Training Program
Valerie Offeman, MOT, OTR/L
Occupational Therapist
Jacob Ofman, PH.D.
Clinical Psychologist
Maria Ofreneo, M.D.
Pediatric Pulmonology Physician
Dawn Ogawa, M.D.
Obstetrics & Gynecology Physician
Michael Ogbonna Ogbonna
Student in an Organized Health Care Education/Training Program
Christina Ogbu
Mental Health Counselor
Jennifer Ogden
Addiction (Substance Use Disorder) Counselor
Joseph Ogo
Day Training/Habilitation Specialist
Leah Ogunade
Peer Specialist
Roshelle Ogundele, LCSW
Counselor
Abosede Ogunkanmi
General Practice Registered Nurse
Hannah Oh, PHARMD
Pharmacist
Won Kyung Oh, MD
Student in an Organized Health Care Education/Training Program
Youngja Oh, MACE
Student in an Organized Health Care Education/Training Program
Michael Ohabughiro, MD
Internal Medicine Physician
Brandy Ohara
Case Manager/Care Coordinator

Nearby Cities in California

Other California cities with provider coverage in the CMS NPPES registry.

Compare specialties side-by-side →

Frequently Asked Questions

How many doctors are in Oakland, CA?
There are 18,012 registered healthcare providers in Oakland, CA, covering 20 specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Oakland?
The most common specialties in Oakland are Student in an Organized Health Care Education/Training Program, Marriage & Family Therapist, Mental Health Counselor, Counselor, Behavior Technician. Student in an Organized Health Care Education/Training Program has the most providers with 1,521.

Provider data from CMS NPPES (download.cms.gov/nppes); specialty classification from NUCC Health Care Provider Taxonomy. PlainDoctor does not rate or rank providers. Methodology · About

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from CMS National Plan and Provider Enumeration System (NPPES). Consult a qualified professional before making decisions based on this data.

Compiled from official public sources by the PlainDoctor editorial team.