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 22 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. Joyce DejesusMarriage & Family Therapist1487846788
  2. Ronna Del RosarioChild & Adolescent Psychiatric/Mental Health Registered Nurse1699233841
  3. Rowena Del Rosario David, PTPhysical Therapist1427996214
  4. Laura Del Toro, RNCase Management Registered Nurse1902085764
  5. Maria Luisa Dela CruzBehavior Analyst1013383975
  6. Ted DelacruzRegistered Respiratory Therapist1134699457
  7. Shelby DelarosaPhysical Therapy Assistant1902514862
  8. Adrian DelgadilloCounselor1932589298
  9. Heavenly DelgadilloCounselor1437518651
  10. Ismael Delgadillo, B.A SOCIOLOGYCounselor1497189393
  11. Desiree DelgadoAddiction (Substance Use Disorder) Counselor1982595203
  12. Jenalyn Eve Delgado, RDNRegistered Dietitian1104649185
  13. Jessica DelgadoBehavior Technician1053284505
  14. Mark DelgadoRegistered Nurse1083589386
  15. Nevaeh DelgadoBehavior Analyst1053282384
  16. Sean DelizoMental Health Counselor1689926008
  17. Victoria Delk, RNChild & Adolescent Psychiatric/Mental Health Registered Nurse1659772135
  18. Brianna Dell'AquilaMental Health Counselor1053760777
  19. Duke DeloacheMental Health Counselor1053823500
  20. Monider DemarsCase Manager/Care Coordinator1285103820
  21. Monique Demartini, PA-CSurgical Physician Assistant1295891000
  22. Nicholas DemartiniCounselor1851835706
  23. Genevieve DemusMarriage & Family Therapist1942345483
  24. Laura Denenberg, M.D.Pediatrics Physician1962513093
  25. Mark DennisPeer Specialist1144118969
  26. Joan Denzler, P.T.Physical Therapist1891859807
  27. Alexandra DeprattiMarriage & Family Therapist1861805160
  28. Susan Devera, DMDGeneral Practice Dentistry1659476810
  29. Simratpal DhaliwalLicensed Practical Nurse1497414304
  30. Deepak Dhawan, MDInternal Medicine Physician1184727182
  31. Marc Diamond, L.C.S.W.Clinical Social Worker1285844381
  32. Alejandra DiazAssistant Health Information Record Technician1891218293
  33. Jennifer Diaz, DMDDentist1184305880
  34. Lizbeth DiazCase Manager/Care Coordinator1902515307
  35. Tiffany DiazCounselor1992242572
  36. Wilfredo DiazPhysical Therapist1144459157
  37. Yessenia DiazCommunity Health Worker1871086355
  38. Tatiana Diaz Cubillos, LVNLicensed Vocational Nurse1720918188
  39. Claudia DiepBehavior Analyst1659872562
  40. Peter DiepAssistant Health Information Record Technician1881961761
  41. Desiree DiesteMental Health Counselor1437330883
  42. Ciara DifeoBehavior Technician1356995468
  43. Thomas DiffenderferOther Technician1790923662
  44. Terilynn DiggsOther Technician1386246957
  45. Rory DillerStudent in an Organized Health Care Education/Training Program1649756008
  46. Michelle Dimaano, P.T.Physical Therapist1558526624
  47. Ronniedith DimapasocDoula1104744697
  48. Rachel DimonMental Health Counselor1730606914
  49. Janice Dinglasan, PTPhysical Therapist1225349459
  50. Alecia DinkinsClinical Social Worker1497460661

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.