NPPES file of Aug 9, 2026

Specialist in California

5,749 NPPES records list specialist with a practice address in California, 15 per 100,000 residents, the 19th highest rate of 51. San Francisco and Los Angeles have the most; each record links to the provider's NPI and the California license search. Page 60 of 115.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 174400000X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

San Francisco has the most, 666

  1. San Francisco666
  2. Los Angeles301
  3. Sacramento241
  4. San Diego207
  5. Oakland198

Specialist records in California

  1. Carla Love-WashingtonSan Francisco, CA 941031639570195
  2. Laurie Lovely, M.D.Roseville, CA 956611760578801
  3. Abigail LowSacramento, CA 958171588250112
  4. Alexander Low, M.D.Folsom, CA 956301861504730
  5. Karen LowSan Francisco, CA 941031023532769
  6. Robert Lowen, MDMountain View, CA 940401659452787
  7. Victoria Lowen, B.AModesto, CA 953501730532771
  8. Bobette LoydEl Cajon, CA 920201528781382
  9. Martha LozaRiverside, CA 925031932387008
  10. Francina Lozada Nur, D.D.S., M.P.HSan Francisco, CA 941431285715714
  11. Catherine LozanoCompton, CA 902221942545306
  12. Rayanne LozanoSan Jose, CA 951261174225106
  13. Humphrey Lu, MDHalf Moon Bay, CA 940191114091428
  14. Jin-Jou Lu, MDNewport Beach, CA 926601497778526
  15. Willie Lu, MDLos Gatos, CA 950321114959558
  16. Henry LubowCalabasas, CA 913021295938033
  17. Francis LucasSan Francisco, CA 941031609249945
  18. Jennifer Lucas, M.D.Greenbrae, CA 949041619078979
  19. Monica Lucas, H.H.P.San Diego, CA 921281447449202
  20. Veena Lucas, CMTSacramento, CA 958111295970374
  21. Michael Luciano, M.D.Riverside, CA 925071649512575
  22. Andrew Luckey, M.D.Simi Valley, CA 930651568516086
  23. Kimberley Ludlow, M.D.Lakewood, CA 907121215140629
  24. Barbara Luedtke, PTSunnyvale, CA 940851225353196
  25. Gustavo Lugo, M.D.Oceanside, CA 920561912941683
  26. Jenya LumSan Francisco, CA 941021639611544
  27. Landy Lum, M.S.P.T.Larkspur, CA 949391932198900
  28. Leslie LumSan Francisco, CA 941021427470574
  29. Lien LumSan Francisco, CA 941021912329053
  30. Zeyu LuoSan Francisco, CA 941211861943516
  31. Kevin Luong, MDRoseville, CA 956611700873320
  32. Marc LussierValencia, CA 913551184771594
  33. Lilian Lustman, M.D.Oakland, CA 946051720275100
  34. Judy Luu, MDLos Angeles, CA 900481336754746
  35. Matthew Luxenberg, MDLos Alamitos, CA 907201548353121
  36. Yee May LwinSacramento, CA 958171548122443
  37. Kenneth Lynn, M.D.Laguna Hills, CA 926531548280423
  38. Thomas Lyons, RMPalm Desert, CA 922601336376052
  39. William Lyons, M.D.Long Beach, CA 908061639139595
  40. Susan LytleLong Beach, CA 908221104934090
  41. Hannah MaSacramento, CA 958171184543100
  42. Steven Ma, MDRosemead, CA 917701104964303
  43. Su Mei MaSan Francisco, CA 941031265280895
  44. Tracy MaSan Francisco, CA 941101104507615
  45. Chantelle MabereyFairfield, CA 945331376368563
  46. Enrica MabulayEncino, CA 914361407713506
  47. Jennifer Macaulay, DPTHuntington Beach, CA 926481346787694
  48. Heather Macbrair, RDAgoura Hills, CA 913011447581566
  49. Tracy Maccallum, LMTRiverside, CA 925061780709899
  50. Carl Macchia, C.O.Irvine, CA 926141508180571

Source: CMS NPPES, primary taxonomy 174400000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 19 of 51 per resident

  1. Massachusetts16
  2. West Virginia15
  3. Maryland15
  4. California15
  5. Minnesota15
  6. Delaware13
  7. 50 states and D.C.18

Source: CMS NPPES, primary taxonomy 174400000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

29.6% of these records appear in a Medicare file, against 17.0% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. California29.6%
  2. United States17.0%

Specialist records in California, measured

  • In a Medicare file1,704 of 5,749 · 29.6% here, 17.0% nationally
  • In the CMS Doctors and Clinicians file1,076 · 18.7% here, 11.1% nationally
  • Not updated in five years or more4,403 · 76.6% here, 77.3% nationally
  • Median graduation year1989 · the 1,075 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 174400000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

5,749 NPPES records list specialist (174400000X) as their primary taxonomy with a practice address in California: 15 per 100,000 residents against 18 nationally (50 states and D.C.). San Francisco has 666 of them (12%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. Florida2,685
  2. Washington2,609
  3. Pennsylvania2,031
  4. Texas1,716

States with a similar rate per 100,000

  1. Minnesota14.6
  2. Maryland15.2
  3. West Virginia15.4
  4. Massachusetts15.7

The largest states

  1. New York22,636
  2. Florida2,685
  3. Washington2,609
  4. Pennsylvania2,031
  5. Texas1,716

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

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.