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 50 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. Marcia CarterBehavior Technician1336034099
  2. Marianela Carter, DDSDentist1841328366
  3. Ricardo Carter, RNRegistered Nurse1184306565
  4. Rickia Carter ThompsonBehavior Technician1427889690
  5. Rachel Carter-Locke, MSWClinical Social Worker1588325666
  6. Joseph Cartwright, MD, MEDInternal Medicine Physician1356795488
  7. Lauren CartwrightSpecialist1154875672
  8. Tanesha CartwrightCounselor1699403568
  9. Wade Cartwright, MDOtolaryngology Physician1376643254
  10. Cinnamon CartyClinical Social Worker1467378265
  11. Samuel CarusoSpeech-Language Pathologist1972227080
  12. Rous Kenmor Carvajal, RNRegistered Nurse1326875527
  13. Alexis CarvalhoBehavior Analyst1437645157
  14. Evelyn Carver, RN,BSNCommunity Health Registered Nurse1669661765
  15. Elizabeth Cary, MSWClinical Social Worker1134689201
  16. Erin CarySocial Worker1861277444
  17. Paul Casale, D.D.S.General Practice Dentistry1316096357
  18. Elise Casas ReyesLicensed Vocational Nurse1821931486
  19. Wendy Casasola, LVNLicensed Vocational Nurse1538302989
  20. Tracy Cascio, LCSWClinical Social Worker1124095559
  21. Antonio Casco-Zuleta, MDStudent in an Organized Health Care Education/Training Program1861127417
  22. Christleen Casem, MDStudent in an Organized Health Care Education/Training Program1790362762
  23. Frances Casey, MSWClinical Social Worker1538718606
  24. Jahon CaseyBehavior Analyst1295203834
  25. Latrice CaseyMental Health Counselor1801374327
  26. Patrick CaseyStudent in an Organized Health Care Education/Training Program1366110264
  27. Cristy Cash, AMFTMarriage & Family Therapist1922971472
  28. Antonio Casillas, MAProfessional Counselor1528575636
  29. Arturo CasillasBehavior Analyst1407243116
  30. Ivis CasillasStudent in an Organized Health Care Education/Training Program1417651951
  31. Juan Casillas, NPFamily Nurse Practitioner1003165135
  32. Victoria CasillasCounselor1992221774
  33. Samuel Cassani, DDSDentist1699551747
  34. Kasey CassanoCase Manager/Care Coordinator1548671639
  35. Catherine Cassel, M.S.W., L.C.S.W.Clinical Social Worker1639376965
  36. Kortland Casselberry, DOStudent in an Organized Health Care Education/Training Program1972363067
  37. Charna Cassell, LMFTMarriage & Family Therapist1912766429
  38. Brian Cassidy, MDPediatrics Physician1730267808
  39. Angelique Cassidy-Borst, MA, LMFTMarriage & Family Therapist1982892998
  40. Bri CassieMental Health Counselor1174472781
  41. Evandro CassomaBehavior Technician1962043794
  42. Marisa Castaldini, MS RD CDERegistered Dietitian1053508382
  43. Alicia CastanedaAssistant Health Information Record Technician1912321076
  44. Alondra CastanedaBehavior Technician1982386470
  45. Jason CastanedaBehavior Technician1215730205
  46. Joline CastanedaRehabilitation Practitioner1386774842
  47. Patricia Castaneda-Davis, MDPediatrics Physician1346330982
  48. Eliza CastanosStudent in an Organized Health Care Education/Training Program1750956397
  49. Arieana Castellanos, LCSWSocial Worker1023591344
  50. Natalie CastellanosCounselor1982947826

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.