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 279 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. E.g. Righellis, DDSOrthodontics and Dentofacial Orthopedics Dentistry1841344330
  2. Jacqueline RigmaidenCommunity Health Worker1922781459
  3. Bryan Rikli, DDSGeneral Practice Dentistry1871721951
  4. April RileyStudent in an Organized Health Care Education/Training Program1356800189
  5. Gloria RileyMental Health Counselor1306097324
  6. Jenny RileyFamily Medicine Physician1508087313
  7. Kaila RileyMarriage & Family Therapist1851916324
  8. Madeline Riley, MFTMarriage & Family Therapist1720312408
  9. Megan Riley, MFTMarriage & Family Therapist1013263581
  10. Piper RileySocial Worker1972095909
  11. Samantha Riley, NPNurse Practitioner1720030323
  12. Norma Rilveria, PNPPediatric Registered Nurse1871638650
  13. Anna RimlingerClinical Social Worker1245848621
  14. Jessica RinBehavior Technician1912567702
  15. Synoun RinCommunity Health Worker1053079582
  16. Erika RinconPsychologist1396673828
  17. Elizabeth Ringrose, MDDermatology Physician1447347877
  18. Kimberly Ringwood, PH.D.Clinical Psychologist1871826974
  19. Penelope Rink, NPGerontology Nurse Practitioner1700860244
  20. Cynthia Rinker, MA, MFTMarriage & Family Therapist1053639567
  21. Diego RiosMental Health Counselor1538802905
  22. Evelyn RiosCommunity Health Worker1861184756
  23. Jennifer RiosDay Training/Habilitation Specialist1497402069
  24. Laura RiosPeer Specialist1275474389
  25. Maria RiosBehavior Technician1992319867
  26. Raquel RiosBehavior Analyst1801385000
  27. Sonny RiosCase Manager/Care Coordinator1902586209
  28. Adriana Rios GispertSchool Counselor1700327806
  29. Graciela Rios Munoz, MSW,LCSWCase Manager/Care Coordinator1649462441
  30. Marbella Rios-DuranMental Health Counselor1710133780
  31. Jennifer Ripley, M.S BCBABehavior Analyst1750829388
  32. Marlena RipleyCounselor1366944985
  33. Lauren Ripley-Close, CRNACertified Registered Nurse Anesthetist1467895847
  34. Kaitlin RirayCounselor1376091090
  35. Habib Risgalla, MDPediatrics Physician1841410768
  36. Joy RisleyMarriage & Family Therapist1770316994
  37. Margaret Ritchey, M.A., RPTPediatric Physical Therapist1609066422
  38. Megann RitherCounselor1326160367
  39. Zeanna RittenhouseMental Health Counselor1447445309
  40. Korine RitterAddiction (Substance Use Disorder) Counselor1902383524
  41. David Rittinger, D.C.Chiropractor1679605711
  42. Sara Rittweger, AUDAudiologist1972022663
  43. Amelia Rivas, MA CCC SLPSpeech-Language Pathologist1609933720
  44. Isela RivasBehavior Technician1679270326
  45. Leslie RivasBehavior Technician1720549223
  46. Sandra RivasBehavior Technician1659136018
  47. Xiomara RivasCounselor1548981244
  48. Gerin River, MDEmergency Medicine Physician1831408921
  49. Alexandra RiveraClinical Psychologist1871934711
  50. Anjelo RiveraSocial Worker1184330748

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.