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 309 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. Kathy Sinsheimer, MFTMarriage & Family Therapist1609087436
  2. Maria Jacqueline SiosonRegistered Nurse1033992524
  3. Zoe Sipe, MFTMarriage & Family Therapist1669214441
  4. Laura SiquigPhysical Therapist1558228510
  5. Lauren Sirey, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1548998214
  6. Taryn SiriasStudent in an Organized Health Care Education/Training Program1992508816
  7. Sharoin SirmonBehavior Technician1891565388
  8. Hannah Siroker, MDEmergency Medicine Physician1710374764
  9. Sierra Onnah Sisk, CMTMassage Therapist1740743806
  10. Lisa Siskind, MDPediatrics Physician1336312891
  11. Avni Sisodiya, PT, DPTPhysical Therapist1790675718
  12. Renee SisonMarriage & Family Therapist1376942813
  13. Matthew Sison WongPharmacist1952180531
  14. Saly Sisouvong, M.D.Internal Medicine Physician1407040991
  15. Patricia SissonCommunity Health Worker1033392030
  16. Lynda SitCertified Respiratory Therapist1336613405
  17. Julia SitkoClinical Social Worker1811270069
  18. Arthur Siu, O.D.Optometrist1942228929
  19. Jana SiuAmbulatory Care Registered Nurse1093359531
  20. Lai SiuLicensed Vocational Nurse1295475275
  21. Orion SiuPhysical Therapist1538842844
  22. Stanton Siu, MDCritical Care Medicine (Internal Medicine) Physician1104904978
  23. Cody Skaggs, PAPhysician Assistant1225282361
  24. Kendall Skaggs-WilliamsBehavior Technician1760036651
  25. Emily Skale, LCSWClinical Social Worker1366844813
  26. Teresa Skelly, MD, MPHPediatrics Physician1356082192
  27. Kathleen SkendrovicRegistered Nurse1427671221
  28. Deundre SkidmoreDay Training/Habilitation Specialist1508593583
  29. Dwain Skinner, MDAnesthesiology Physician1255344586
  30. Stephen Skinner, MDOrthopaedic Surgery Physician1528024569
  31. Bernard SklarPsychiatry Physician1861532871
  32. Jelena SkracicDay Training/Habilitation Specialist1063235976
  33. Alicia SkuceSpecialist1922211218
  34. Andris Skuja, PHDPsychologist1104901651
  35. Konstantina SkulevaBehavior Technician1538827274
  36. Peter Slabaugh, MDOrthopaedic Surgery of the Spine Physician1447227392
  37. Alana SladeCounselor1568886620
  38. Daisy SladerAdult Psychiatric/Mental Health Registered Nurse1083373880
  39. Jessica Slafter, LCSWCounselor1215689625
  40. Paul Slakey, MFTMarriage & Family Therapist1629244991
  41. Stephanie SlapikClinical Social Worker1306475454
  42. Jacklyn SlaterCommunity Health Worker1700548641
  43. Alice Slaughter, ASWClinical Social Worker1669676359
  44. Geoffrey Slaughter, MDStudent in an Organized Health Care Education/Training Program1962909655
  45. Gerald SlaughterAddiction (Substance Use Disorder) Counselor1336371103
  46. Tiffany SlaughterCommunity Health Worker1720580608
  47. Thomas Slemmer, M.D.Surgery Physician1699164137
  48. John SlentzCase Management Registered Nurse1619361987
  49. Paul Slidders, L.ACAcupuncturist1982854923
  50. Emily Sloan, RNRegistered Nurse1265214233

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.