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 63 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. Erika Cisneros OchoaStudent in an Organized Health Care Education/Training Program1275295230
  2. Aicha CissePsychologist1811678816
  3. Soumahila CisseMental Health Counselor1447449392
  4. Claudia Cisternas CamusSpeech-Language Pathologist1730032152
  5. Evan CittadinoFamily Psychologist1336982065
  6. Allison CivielloPharmacist1760854475
  7. Aleksandras Cizas, MDAnesthesiology Physician1528452638
  8. Emily ClaassenCase Manager/Care Coordinator1275073579
  9. Miranda ClaggetteMental Health Counselor1902439623
  10. Heather Clague, M.D.Psychiatry Physician1245287663
  11. Maira Clancy, LCSWClinical Social Worker1972370104
  12. Timothy ClancyClinical Social Worker1053854802
  13. Kathleen Clanon, MDAllergy & Immunology Physician1386654945
  14. Polly Clare-Rothe, MSWStudent in an Organized Health Care Education/Training Program1366952616
  15. Laura Clarizio, NPGerontology Nurse Practitioner1316465198
  16. Annie ClarkAddiction (Substance Use Disorder) Counselor1902478662
  17. Ashlyn ClarkMarriage & Family Therapist1417400029
  18. Cassandra ClarkMarriage & Family Therapist1962835801
  19. Cheree ClarkMental Health Counselor1447551981
  20. Danielle ClarkDay Training/Habilitation Specialist1750626412
  21. Darcey Clark, AOD COUNSELORAddiction (Substance Use Disorder) Counselor1760007751
  22. Ellen Clark, DODiagnostic Radiology Physician1174083596
  23. Emily ClarkClinical Social Worker1679052195
  24. Frank ClarkBehavior Technician1598381626
  25. Gina Clark, MDPsychiatry Physician1992020887
  26. Hilde Clark, PHDClinical Psychologist1457669095
  27. Jolie Clark, LCSWCounselor1710563549
  28. Kelli ClarkClinical Social Worker1922536374
  29. Michael ClarkMarriage & Family Therapist1003339730
  30. Naima ClarkStudent in an Organized Health Care Education/Training Program1053196626
  31. Peter ClarkMental Health Counselor1710294434
  32. Phillip ClarkCounselor1568950764
  33. Rashawn ClarkBehavior Technician1396379988
  34. Richard Clark, LMFTMarriage & Family Therapist1134318140
  35. Stephanie Clark, ODOptometrist1730346172
  36. Terra ClarkRegistered Nurse1821956665
  37. Wendy Clark, PTPhysical Therapist1639231202
  38. Elise ClarkeDay Training/Habilitation Specialist1013721240
  39. Gilian ClarkeSocial Worker1538612619
  40. Jerdine Clarke, PSY.D.Clinical Psychologist1982002846
  41. Jonathan Clarke, M.D.Anesthesiology Physician1629034806
  42. Mary Clarke, PH.D.Clinical Psychologist1437430089
  43. Pamela Clarke, PH.D.Clinical Psychologist1639348865
  44. Wayne ClarkeCase Manager/Care Coordinator1538759667
  45. Samantha ClarksonMental Health Counselor1033863071
  46. Katherine ClarosCommunity Health Worker1992484828
  47. Jerri Classen, RN, FNPFamily Nurse Practitioner1730102633
  48. Eliana ClaudeanosSocial Worker1356061840
  49. Isaiah ClaudioStudent in an Organized Health Care Education/Training Program1659213692
  50. Catherine Claus, M.D.Pediatrics Physician1740557339

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.