NPPES file of Aug 9, 2026

Doctors and health care providers in Oakland, CA

18,558 individual NPPES records list a practice address in Oakland, 7th of 812 California cities. The largest group is marriage & family therapist: 1,576, 8% of the city's records, against 6% across California. Page 248 of 372.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Oakland

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Oakland in California

  • Rank in California7th of 812 cities by records
  • Share of the state1.9% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups22.2% of all records
  • Marriage & Family Therapist rank5th of the 10 California cities with the most

Compared with California as a whole, Oakland has 2.9× the state's share of counselor records and 0.29× its share of behavior technician records.

Providers in Oakland, alphabetically

  1. Diana OlingerCounselor1972202505
  2. Paul OliphantSpeech-Language Pathologist1730033986
  3. Benilda Oliquino, RN, BSN, CCRN, FNP-CFamily Nurse Practitioner1477164051
  4. Gavino Oliva, MDSurgery Physician1487638656
  5. Julie Oliva, MDStudent in an Organized Health Care Education/Training Program1902242548
  6. Anaiya OlivaresCounselor1902573843
  7. Dominique OlivaresBehavior Technician1972155711
  8. Griselda Olivares, BSBehavior Analyst1598539009
  9. Amanda OlivasStudent in an Organized Health Care Education/Training Program1376346759
  10. Clifton OliveAdult Companion1598571556
  11. Constance Oliver, CLINICIANMental Health Counselor1891818969
  12. Danielle OliverBehavior Technician1740142447
  13. Terry OliverCounselor1851933733
  14. Vanecia OliverMental Health Counselor1134980980
  15. Henry Olivera PerezStudent in an Organized Health Care Education/Training Program1326798034
  16. Jessica OliveroPediatric Nurse Practitioner1366923138
  17. Jamy OlivoCommunity Health Worker1750197604
  18. Amanda Ollis, LMFTMarriage & Family Therapist1750550836
  19. Yolonda OllowayClinical Social Worker1174079149
  20. Rebecca Olmsted, MAMarriage & Family Therapist1992945133
  21. Phillip Olrich, D.D.S.Dentist1841651635
  22. Emma Olsen, M.S.Student in an Organized Health Care Education/Training Program1639550627
  23. Amanda OlsonBehavior Technician1053816009
  24. Amanda OlsonCounselor1255002309
  25. Aubrey OlsonSpeech-Language Pathologist1992651038
  26. Citiee OlsonBehavior Analyst1114419595
  27. Connie Olson, PHARM. D.Pharmacist1528136496
  28. Jennifer Olson, MDPediatric Endocrinology Physician1194739540
  29. Jennifer OlsonAddiction (Substance Use Disorder) Counselor1912367376
  30. Keith Olson, MFTMarriage & Family Therapist1891904413
  31. Marie OlsonStudent in an Organized Health Care Education/Training Program1114468295
  32. Matthew OlsonMarriage & Family Therapist1659291839
  33. Robert Olson, MDAnesthesiology Physician1902984792
  34. Alexandra OlveraBehavior Analyst1144724063
  35. Patricia OlveraMarriage & Family Therapist1578966792
  36. Arisbeet Olvera RamirezNurse's Aide1588583397
  37. Shireen OlyaieDoula1568296648
  38. Malia Omale, MDStudent in an Organized Health Care Education/Training Program1750140836
  39. Albertine Omani, M.D.Gynecology Physician1861552606
  40. Safia Omar, ASWSocial Worker1881875599
  41. Jasmine OmariPeer Specialist1427785674
  42. Tinuola OmoleBehavior Technician1639034382
  43. Egbebalakhamen Omoregie, NPNurse Practitioner1962015701
  44. Omoniyi Omotoso, M.D., M.P.H., FAAPPediatrics Physician1871875344
  45. Laura Onate SolisRehabilitation Practitioner1992650519
  46. Diana Ong, M.D.Student in an Organized Health Care Education/Training Program1649701608
  47. Himi OngMarriage & Family Therapist1841019544
  48. Jacqueline OngClinical Social Worker1649930082
  49. Lianne OngMarriage & Family Therapist1548516891
  50. Matthew Ong, MFTMarriage & Family Therapist1972736379

The largest California cities

  1. Los Angeles69,537
  2. San Diego52,937
  3. San Francisco38,143
  4. Sacramento33,083
  5. San Jose20,925

All of California →

How to read this directory

Oakland, California appears in the CMS National Plan and Provider Enumeration System with 18,558 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 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 2024 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 Marriage & Family Therapist (1,576 clinicians, followed by Student in an Organized Health Care Education/Training Program with 1,419 and Clinical Social Worker with 1,130). 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 47.6 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, 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. 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 Oakland, CA?

There are 18,558 registered healthcare providers in Oakland, CA, covering 25 or more 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 Marriage & Family Therapist, Student in an Organized Health Care Education/Training Program, Clinical Social Worker, Mental Health Counselor, Behavior Technician. Marriage & Family Therapist has the most providers with 1,576.

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.