NPPES file of Aug 9, 2026

Doctors and health care providers in San Mateo, CA

3,909 individual NPPES records list a practice address in San Mateo, 54th of 812 California cities. The largest group is behavior technician: 848, 22% of the city's records, against 18% across California. Page 41 of 79.

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).

San Mateo in California

  • Rank in California54th of 812 cities by records
  • Share of the state0.4% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups35.7% of all records

Compared with California as a whole, San Mateo has 2.5× the state's share of psychiatry physician records and 0.57× its share of family medicine physician records.

Providers in San Mateo, alphabetically

  1. Jennifer Leland, LMFTMarriage & Family Therapist1760527758
  2. Carol Lemmon, NPNurse Practitioner1972661379
  3. Courtney LemmonMental Health Counselor1154661379
  4. Rocio Lemus, MACounselor1518010784
  5. Gerry Lenhart, PH.D.Clinical Psychologist1184814865
  6. Lawrence Lenhart, MDCardiovascular Disease Physician1134210107
  7. Brooke Leon, N.PFamily Nurse Practitioner1154561009
  8. Leilani LeonSchool Counselor1942135470
  9. Neftali LeonBehavior Technician1780539072
  10. Deisy Leon AvalosBehavior Technician1568140226
  11. Ana Leon WilliamsMarriage & Family Therapist1598213779
  12. Nicholas Leonardo, RDRegistered Dietitian1992398556
  13. Donna Leong, DDSGeneral Practice Dentistry1417173238
  14. Julie LeongMarriage & Family Therapist1093002685
  15. Roland Leong, DDSGeneral Practice Dentistry1790900777
  16. Ryan Leong, DDSGeneral Practice Dentistry1770318289
  17. Wanda Leong, D.D.S.Dentist1154481976
  18. Waymond Leong, DDSGeneral Practice Dentistry1447475405
  19. Mariya Leontyeva, FNP-CFamily Nurse Practitioner1649037094
  20. Emily Lepage-Wu, M.S., LEP, ABSNPSchool Psychologist1033827225
  21. Diane Leroi, PH.D.Clinical Psychologist1720109531
  22. Carmen LescanoRegistered Nurse1578149316
  23. Laurie Leung, PH.D.Psychologist1598957193
  24. Suen LeungMental Health Counselor1417443755
  25. Ioane LeviCase Manager/Care Coordinator1609497775
  26. David Levin, L.C.S.W.Clinical Social Worker1720104060
  27. Elena LevinMarriage & Family Therapist1003003849
  28. Lori Levitt, MFTMarriage & Family Therapist1023488426
  29. Amnon LevyBehavior Technician1932953031
  30. Daniele Levy, PHDClinical Psychologist1902166465
  31. Pamela Levy, M.A., MFTMarriage & Family Therapist1215116298
  32. Vivian Levy, MDInfectious Disease Physician1053485748
  33. Justin LewChiropractor1689284747
  34. Melodie Lew, MFTMarriage & Family Therapist1861512113
  35. Minjung Lew, O.D.Optometrist1639264179
  36. Wei Lew, PH.D.Clinical Psychologist1427134733
  37. Brenda LewisPeriodontics1447350277
  38. David Lewis, DCChiropractor1043377658
  39. Alvin LiDermatology Physician1225531007
  40. Desiree Li, MDPsychiatry Physician1053816306
  41. Kehan Li, DDSDentist1215002969
  42. Kitsum Li, OTDOccupational Therapist1821218785
  43. Cindy Liang, LCSWClinical Social Worker1952748865
  44. Lingming LiangAcupuncturist1912559659
  45. James LichtensteinMental Health Counselor1093434169
  46. Rachel Liebman, LCSW 107831Clinical Social Worker1417269879
  47. Katherine LienBehavior Technician1366927097
  48. Dominique LigginsSocial Worker1407526841
  49. Latifunisa LilaniCommunity Health Worker1477009033
  50. Anayah LillardBehavior Technician1023663663

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 Mateo, California appears in the CMS National Plan and Provider Enumeration System with 3,909 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 Mateo - 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 Mateo 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 Mateo is weighted toward Behavior Technician (848 clinicians, followed by Marriage & Family Therapist with 348 and Behavior Analyst with 200). 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 Mateo reports roughly 10 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 Mateo 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 Mateo, CA?

There are 3,909 registered healthcare providers in San Mateo, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in San Mateo?

The most common specialties in San Mateo are Behavior Technician, Marriage & Family Therapist, Behavior Analyst, Mental Health Counselor, Clinical Social Worker. Behavior Technician has the most providers with 848.

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.