NPPES file of Aug 9, 2026

Doctors and health care providers in San Leandro, CA

4,976 individual NPPES records list a practice address in San Leandro, 35th of 812 California cities. The largest group is counselor: 827, 17% of the city's records, against 1% across California. Page 84 of 100.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

The 8 largest groups in San Leandro

  1. Counselor827
  2. Mental Health Counselor481
  3. Behavior Technician362
  4. Marriage & Family Therapist322
  5. Clinical Social Worker270
  6. Students in training144
  7. Community Health Worker144
  8. Pharmacist132

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

San Leandro in California

  • Rank in California35th of 812 cities by records
  • Share of the state0.5% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups33.6% of all records
  • Counselor rank2nd of the 10 California cities with the most

Compared with California as a whole, San Leandro has 83.1× the state's share of assistant health information record technician records and 0.41× its share of behavior technician records.

Providers in San Leandro, alphabetically

  1. Lincoln Sison, M.D.Internal Medicine Physician1982990370
  2. Judy Siu, M.D.Diagnostic Radiology Physician1992748313
  3. Michael Siu, DDSDentist1548772221
  4. Daniel SiubaMental Health Counselor1568897643
  5. Lubna SkafiMental Health Counselor1275958951
  6. Sadaf SkandariStudent in an Organized Health Care Education/Training Program1194176776
  7. Jonathan SklarCounselor1104114537
  8. Rebecca Sklar, MSWClinical Social Worker1548155609
  9. Stephanie SlackCase Manager/Care Coordinator1912226739
  10. Nicole SladeMental Health Counselor1548694243
  11. Donna SlaterPsychiatric/Mental Health Registered Nurse1053070425
  12. Diah SlatonDay Training/Habilitation Specialist1760016935
  13. Stephen Slingsby, PHARM.D.Pharmacist1114160819
  14. Hilary Sluis, M.S.Mental Health Counselor1235578758
  15. Natalie SmartMental Health Counselor1396930871
  16. Susan Smiley, OTR/LNeurorehabilitation Occupational Therapist1982705943
  17. Adriena SmithCommunity Health Worker1346899325
  18. Allison SmithMental Health Counselor1225238553
  19. Allison SmithMental Health Counselor1205233798
  20. Antonio SmithMarriage & Family Therapist1366143562
  21. Catilla SmithBehavior Technician1356931430
  22. Chelsea Smith, COTA/LOccupational Therapy Assistant1265276489
  23. Harriet Smith, MDDiagnostic Radiology Physician1033282348
  24. Kevin Smith, CRNACertified Registered Nurse Anesthetist1770532277
  25. Laura Smith, MSBehavior Analyst1447749924
  26. Nicole Smith, PSYDClinical Psychologist1689962706
  27. Paul SmithSchool Counselor1336019009
  28. Sarah Smith, LCSWClinical Social Worker1154523710
  29. Shannon SmithClinical Social Worker1285839530
  30. Susan SmithMarriage & Family Therapist1154522043
  31. Tracie SmithFamily Nurse Practitioner1063240356
  32. Victoria Smith, LPTLicensed Psychiatric Technician1306646237
  33. Jill Smith Forster, M.D.Orthopaedic Surgery Physician1205914066
  34. Danielle SmitsHealth Information Technician1184914012
  35. Katherine Smolley, CNMAdvanced Practice Midwife1588804827
  36. Herbert SmyerMental Health Counselor1780991604
  37. Tyrone Snipes, D.O.Internal Medicine Physician1861627457
  38. Irene SnyderCase Manager/Care Coordinator1205019841
  39. Victoria Snyder, B.A.Counselor1497911457
  40. Joyce SoStudent in an Organized Health Care Education/Training Program1386061000
  41. Rockin SoHealth Information Technician1366827693
  42. Rotha SoStudent in an Organized Health Care Education/Training Program1831539444
  43. Sallyann So, RNCommunity Health Registered Nurse1326927187
  44. Christina Solano, LMFTMarriage & Family Therapist1235580705
  45. Silverio SolanoDay Training/Habilitation Specialist1851943849
  46. Anna SolisMental Health Counselor1861850711
  47. Sophia SolisBehavior Technician1093357857
  48. Elena Solis-GarciaBehavior Technician1699694679
  49. Eric SolvikClinical Social Worker1235506296
  50. Applejoy SomeraMental Health Counselor1639648827

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

San Leandro, California appears in the CMS National Plan and Provider Enumeration System with 4,976 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 San Leandro - 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 San Leandro 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 San Leandro is weighted toward Counselor (827 clinicians, followed by Mental Health Counselor with 481 and Behavior Technician with 362). 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, San Leandro reports roughly 12.8 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.

For San Leandro 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 San Leandro, CA?

There are 4,976 registered healthcare providers in San Leandro, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in San Leandro?

The most common specialties in San Leandro are Counselor, Mental Health Counselor, Behavior Technician, Marriage & Family Therapist, Clinical Social Worker. Counselor has the most providers with 827.

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.