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 357 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. Lynnette WilliamsSpecialist1053999698
  2. Lynnette Williams, SUDCCAddiction (Substance Use Disorder) Counselor1093467953
  3. Marcus WilliamsEmergency Medicine Physician1851708168
  4. Marilyn Williams, NPWomen's Health Nurse Practitioner1962402602
  5. Marisa WilliamsCommunity Health Worker1619757697
  6. Marlonie WilliamsBehavior Technician1275368359
  7. Martina WilliamsCounselor1093347213
  8. Mary Jo Williams, RNAdministrator Registered Nurse1144333220
  9. Matthew WilliamsMental Health Counselor1467872341
  10. McKinley WilliamsSpecialist1821477688
  11. Mimi Williams, MDStudent in an Organized Health Care Education/Training Program1114620879
  12. Mitzi Williams, DPMFoot & Ankle Surgery Podiatrist1861673972
  13. Patanisha WilliamsCounselor1093018194
  14. Rebecca Williams, MAMarriage & Family Therapist1205027984
  15. Rebekka Williams, LMFTMarriage & Family Therapist1568144038
  16. Rex Williams, MDSurgery Physician1700076924
  17. Richard WilliamsCase Manager/Care Coordinator1033232079
  18. Ronika WilliamsMental Health Counselor1447871561
  19. Shania Williams, NREMTDoula1063288843
  20. Shanica WilliamsMental Health Counselor1982027918
  21. Shanya WilliamsBehavior Technician1912708983
  22. Sharon Williams, M.D.Pediatric Critical Care Medicine Physician1336119510
  23. Sharrise WilliamsCounselor1285184846
  24. Sheri WilliamsNurse's Aide1104746999
  25. Tahji WilliamsDay Training/Habilitation Specialist1770474884
  26. Tamia WilliamsSocial Worker1154017853
  27. Tate (teela) WilliamsCommunity Health Worker1740556604
  28. Tavare WilliamsCase Manager/Care Coordinator1104466549
  29. Tawny Williams, RADTAddiction (Substance Use Disorder) Counselor1255833042
  30. Thomas Williams, M.D.Pulmonary Disease Physician1619004967
  31. Tina WilliamsBehavior Technician1023795390
  32. Tyler Williams, DPTPhysical Therapist1386873305
  33. Tyronda WilliamsCase Manager/Care Coordinator1558075911
  34. Warren WilliamsCase Manager/Care Coordinator1497465405
  35. Wendell Williams, MDFamily Medicine Physician1093703357
  36. William Williams, MDOral & Maxillofacial Surgery (D.M.D.)1073539086
  37. Willona WilliamsCase Manager/Care Coordinator1316242308
  38. Yasmine WilliamsCounselor1134573231
  39. Zachary WilliamsCounselor1942167218
  40. Cayleigh Williamson, CRNACertified Registered Nurse Anesthetist1144863440
  41. Garry WilliamsonAddiction (Substance Use Disorder) Counselor1194911818
  42. Rayvon WilliamsonCase Manager/Care Coordinator1114655321
  43. Mady WillieCounselor1174996615
  44. Cortney WillifordBehavior Technician1639721434
  45. Rachel Willimott, LCSWClinical Social Worker1780093542
  46. Charonda WillisMarriage & Family Therapist1750565065
  47. Hannah WillisBehavior Technician1235995911
  48. Lawrence WillisStudent in an Organized Health Care Education/Training Program1225588205
  49. Liana WillisCommunity Health Worker1376324574
  50. Lydell WillisMental Health Counselor1134546047

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.