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 109 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. John Warbritton, MDOakland, CA 946121477696458
  2. Derrick WardSan Francisco, CA 941121659778991
  3. Robert Ward, M.D.San Jose, CA 951251588736144
  4. Emily WardaSacramento, CA 958171740009562
  5. William Warden, M.D.Long Beach, CA 908061831178599
  6. Brian Wardwell, M.D.Torrance, CA 905021013113737
  7. Kimberly WarfieldPueblo, CA 810051225595630
  8. Lynnette WarfieldSan Francisco, CA 941031821285081
  9. Nicole WargonSan Francisco, CA 941021467806794
  10. Hillis Warren, M.D.Sacramento, CA 958641801999602
  11. Joan Warren, M.D.Palm Desert, CA 922601972559102
  12. Shinteya Warren-LoganOakland, CA 946011073944211
  13. Jihad Warwar, M. D.Ventura, CA 930031013954957
  14. Robert Warwar, M. D.Ventura, CA 930031518909548
  15. Aliyah WashingtonSan Francisco, CA 941031083381479
  16. Lakeisha Washington, MEDICAL NAIL TECHChatsworth, CA 913111063963593
  17. Lisa WashingtonSan Francisco, CA 941421477071363
  18. Patricia Washington, M.D.Newport Beach, CA 926601558488049
  19. Linda Waters, M.D.Palo Alto, CA 943011245259050
  20. George WatkinRedlands, CA 923731295170645
  21. Caroline Watson, M.D.West Hollywood, CA 900481396797098
  22. Gary Watson, M.D.Modesto, CA 953551376587006
  23. Henry Watson, M.D.Oakland, CA 946081235142894
  24. James Watson, M.D.Palo Alto, CA 943041780705665
  25. Judith Watson, M.D.Los Angeles, CA 900071053447565
  26. Ragina WatsonOakland, CA 946051366888265
  27. Tammy WatsonSan Diego, CA 921031255685509
  28. Denise Watson LumDublin, CA 945681225838451
  29. Kenneth Waxman, MDSanta Barbara, CA 931051821068214
  30. Heather WayneSan Francisco, CA 941031407311459
  31. Kenan WayneSacramento, CA 958171851254940
  32. Dora Weber, OTR/LLarkspur, CA 949391487643458
  33. Joel Weddington, MDSan Francisco, CA 941091598874661
  34. Choong Wee, MDLong Beach, CA 908061023043304
  35. Laurence Weekes, M.D.Simi Valley, CA 930651316027600
  36. David WeeksCardiff, CA 920071164622460
  37. Alan Wei, M.DPittsburg, CA 945651285603514
  38. Deborah Weidhaas, DEBORAH WEIDHAASLos Gatos, CA 950301740320498
  39. Jane Weil, LCSWWalnut Creek, CA 945961427125038
  40. Emma WeinbergerSan Francisco, CA 941101134660475
  41. Gerald Weingarten, M.D.Encino, CA 914361861415499
  42. Steven Weinstein, M.D.Torrance, CA 905031679549539
  43. Ken WeisbroSan Francisco, CA 941211649716648
  44. David Weisenberg, M.D.Redwood City, CA 940631346288545
  45. Thomas Weisenburger, M.D.Santa Barbara, CA 931051912053968
  46. Shawna Weisler, M.DBurbank, CA 915051962501858
  47. Mason Weiss, M.D.Inglewood, CA 903011447256565
  48. Steven Weiss, MDBeverly Hills, CA 902101922183060
  49. Glenn Weissman, MDArcadia, CA 910061689606311
  50. Robert Weissman, M.D.Tarzana, CA 913561639192263

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.