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 57 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. Amy MaslukBehavior Analyst1093069247
  2. Arlinique MasonBehavior Technician1952931206
  3. Damon MasonCounselor1427590520
  4. Jill Mason, LCSWClinical Social Worker1144399148
  5. Paul MasonMarriage & Family Therapist1578796579
  6. Shauntrine MasonMarriage & Family Therapist1184154999
  7. Sophie MasonStudent in an Organized Health Care Education/Training Program1386478006
  8. Jennifer Massie, LCSWSocial Worker1215333109
  9. Lauren MassieCommunity Health Worker1982121315
  10. Natasha MassieAddiction (Substance Use Disorder) Counselor1194471136
  11. Omar Massoud, MA, BCBABehavior Analyst1043727381
  12. Melinda Masters, MAMarriage & Family Therapist1265997316
  13. Cinthia Mata-CervantesSocial Worker1275183808
  14. Lilia MateoHealth Information Technician1659935740
  15. Sangeetha Mathivanan, MS,RDRegistered Dietitian1487851796
  16. Anima Mathur, M.D.Internal Medicine Physician1508056805
  17. Yesenia Matias-GasparProfessional Counselor1275105405
  18. Carlo Matibag, RRTRegistered Respiratory Therapist1295207090
  19. Maricela MatosCounselor1538731948
  20. Ivan Matsui, P.T.Physical Therapist1598833600
  21. Tomoko MatsuiClinical Social Worker1144427881
  22. Mark Mattek, LPCCMental Health Counselor1588553465
  23. Ashley MatteoniMental Health Counselor1265809222
  24. Cameron MatthewsCounselor1922385038
  25. Lawana MatthewsCounselor1619562659
  26. Sacha Matthews, OTRLOccupational Therapist1265500276
  27. Sharon Matthews, N.P.Gerontology Nurse Practitioner1508930389
  28. Victoria Mattimore, M.A.Behavior Analyst1093263709
  29. Ashley MauerClinical Social Worker1336765544
  30. Cynthia Maung, O.D.Optometrist1699801126
  31. Gillyn MaungStudent in an Organized Health Care Education/Training Program1902411564
  32. Sara MaurerProfessional Counselor1669039004
  33. Jennifer MauriceMental Health Counselor1902032592
  34. Claudia MauricioCommunity Health Registered Nurse1164393773
  35. Harold Maxfield, SUD #15799Addiction (Substance Use Disorder) Counselor1790550093
  36. Skyler MaxwellRehabilitation Practitioner1861885758
  37. Cynthia MayMental Health Counselor1205230802
  38. Karen MayClinical Social Worker1033727482
  39. Leslie MayMarriage & Family Therapist1639584550
  40. Marilyn May, M.S.Counselor1104178011
  41. Alejandra MayorgaMental Health Counselor1255649422
  42. Yvette McAdamsRehabilitation Counselor1396430542
  43. Jessica McAlister, RRTGeneral Care Registered Respiratory Therapist1174092878
  44. Jennifer McBrideCounselor1437395787
  45. Ramona McCabeAssistant Health Information Record Technician1558766642
  46. Kara McCaffertyCounselor1891242723
  47. Nicole McCallCounselor1275165938
  48. Kaitlyn McCannAssistant Health Information Record Technician1841608106
  49. Joshua McCarthyCounselor1083070031
  50. Leslie McClainMental Health Counselor1407043573

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.