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 95 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. Joshua WangCounselor1770601478
  2. Lawrence WangStudent in an Organized Health Care Education/Training Program1780575084
  3. Ronghai WangAcupuncturist1649897000
  4. Ryan Wang, MDAnesthesiology Physician1972968758
  5. Xuejun Wang, DDSGeneral Practice Dentistry1609653633
  6. Cynthia Ward, DCChiropractor1376614388
  7. Donnell WardMental Health Counselor1871740373
  8. Robin WardDay Training/Habilitation Specialist1932030079
  9. Anusheh WardaCounselor1003065129
  10. Jane Wardzinska, M.D.Family Medicine Physician1093732935
  11. Frances Warmerdam, LMFTCounselor1972281822
  12. Kelly WarrenBehavior Technician1407524044
  13. Monique WarrenCounselor1609452101
  14. Brielle WashingtonCounselor1811392905
  15. Leslie Wasserman, LCSWClinical Social Worker1124153481
  16. James Waterhouse, M.D.Internal Medicine Physician1881772630
  17. Tamara WatkinsAddiction (Substance Use Disorder) Counselor1023263753
  18. Kathleen WatrousCounselor1154614196
  19. Amanda WatsonCounselor1578899928
  20. Aniesa WatsonBehavior Analyst1679022826
  21. Joycelyn Watson, RCP, RTCertified Respiratory Therapist1023589694
  22. Marshea Watson, D.C.Chiropractor1508187667
  23. Kimberly WayneSocial Worker1225162688
  24. Christina Weahunt, RD CDERegistered Dietitian1558323576
  25. Robert WeaverCounselor1912363060
  26. Natalie WebsterMental Health Counselor1700394848
  27. Charlene WedderburnCase Manager/Care Coordinator1730510249
  28. David Wei, M.D.Anesthesiology Physician1861570616
  29. Katherine WeikelCounselor1679982946
  30. Stephen WeinerPsychiatry Physician1912466376
  31. Herbert Weingard, M.D.Family Medicine Physician1275646721
  32. Glenn Weinraub, DPMFoot & Ankle Surgery Podiatrist1093786998
  33. Robyn Weiss, M.D.Emergency Medicine Physician1336227198
  34. Anna WeitzmanCommunity Health Worker1710453741
  35. Cheryl Welch, LCSWClinical Social Worker1346918745
  36. Chaunta WellsAddiction (Substance Use Disorder) Counselor1134734270
  37. Eric Weng, M.D.Anatomic Pathology & Clinical Pathology Physician1932300456
  38. Jeanna WernerCounselor1578964631
  39. Karla Werninghaus, M.D.Plastic Surgery Physician1184702946
  40. Michael WerthCounselor1477950186
  41. Brianna WesleyStudent in an Organized Health Care Education/Training Program1487094306
  42. Erica WestSocial Worker1134643422
  43. Thistle WestSocial Worker1144875170
  44. Zarathustra West, RNCertified Registered Nurse Anesthetist1942609714
  45. Jenna WestendorfStudent in an Organized Health Care Education/Training Program1073068821
  46. Emily WhartonCounselor1740699081
  47. Priscilla Wheeler, PAPhysician Assistant1831221860
  48. Sarah WheelerCounselor1841674702
  49. Sheila WhelanChild & Adolescent Psychiatric/Mental Health Registered Nurse1386237444
  50. Timothy WhetungCounselor1992127781

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.