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 78 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. Fiona RuddyMarriage & Family Therapist1508248253
  2. John Ruddy, M.D.Pulmonary Disease Physician1902890130
  3. Annie RudorfCounselor1932518172
  4. Jennifer RuelasBehavior Technician1871127365
  5. Caitlin RuffmanCounselor1811284854
  6. Betsabe RuizMarriage & Family Therapist1255785291
  7. Debra RuizEmergency Registered Nurse1518718493
  8. Mark Ruiz, M.A.Counselor1760951156
  9. Nicolas RuizMental Health Counselor1841771037
  10. Raymond RuizCounselor1174824585
  11. Alexandra RuppSchool Social Worker1104250679
  12. Angela Rusher, PT, DPTPhysical Therapist1669640785
  13. Hannah Rusk, LMFTMarriage & Family Therapist1114301074
  14. David Russ, M.S.W.Mental Health Counselor1174965677
  15. Jennifer RussCounselor1477866382
  16. Lisa RussellAddiction (Substance Use Disorder) Counselor1629800222
  17. Robert RussellMental Health Counselor1689008583
  18. Tiara RussellAddiction (Substance Use Disorder) Counselor1558969584
  19. Danielle RussoOccupational Therapist1689208639
  20. James Russo, D.D.S.Dentist1750495461
  21. Molly RussoMental Health Counselor1013260736
  22. Maria RuvalcabaMental Health Counselor1225628027
  23. Yesenia RuvalcabaHealth Information Technician1053828186
  24. Chavariana RyanCounselor1285149153
  25. Kirk Ryan, PHARMDPharmacist1659118966
  26. Michelle RyanAssistant Health Information Record Technician1043680218
  27. Sergiy Rybiy, M.D.Physical Medicine & Rehabilitation Physician1770661357
  28. Patrick Ryken, MPTPhysical Therapist1104994060
  29. Mark RyleClinical Social Worker1366672636
  30. Sara RyugoCommunity Health Worker1033692504
  31. Rosalia Saavedra, O.D.Optometrist1518929520
  32. Clarisse SabadoBehavior Technician1396566071
  33. Pedro Sabaht-BritoDay Training/Habilitation Specialist1376193946
  34. Varsha SabharwalStudent in an Organized Health Care Education/Training Program1548147986
  35. Amirah SabirAssistant Health Information Record Technician1942850557
  36. Tasin SabirCounselor1093953093
  37. Aurelio Edward Sadang, FNP-C, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1336483569
  38. Shah SadiqMarriage & Family Therapist1801673694
  39. Brenda SaechaoBehavior Technician1598269482
  40. Nung SaechaoBehavior Analyst1669974226
  41. Beverley SaechinMental Health Counselor1548813744
  42. Jin SaengCounselor1609105329
  43. Albert SaenzAssistant Health Information Record Technician1780999524
  44. Tonh SaephanMental Health Counselor1144693201
  45. Sandra SafeinRehabilitation Practitioner1649191495
  46. Tara SaffoldCounselor1629365663
  47. Alberto SahagunCounselor1427490440
  48. Jaskarenjit SahotaBehavior Technician1033704234
  49. Najibulrahman Saifulrahman, M.D.General Practice Physician1144517756
  50. Patrice SaindonCounselor1255738969

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.