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 111 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. Heather WilliamsDuarte, CA 910101770453607
  2. Kaitlyn WilliamsModesto, CA 953501184077125
  3. Lynnette WilliamsOakland, CA 946211053999698
  4. McKinley WilliamsOakland, CA 946121821477688
  5. Monte WilliamsRedwood City, CA 940631366671844
  6. Paula WilliamsLos Angeles, CA 900161003246638
  7. Rene Williams, M.D.Redding, CA 960011265556583
  8. Richard Williams, M.D.San Dimas, CA 917731467457390
  9. Sierra Williams, B.A.Modesto, CA 953501649789330
  10. Susan Williams, OTR/L, MFTBerkeley, CA 947051902170939
  11. Temaria WilliamsSan Francisco, CA 941031104542711
  12. Veronica WilliamsLompoc, CA 934361548712920
  13. Virgil Williams, M.D.Concord, CA 945201912941469
  14. William Williams, MDWest Covina, CA 917901972685956
  15. Alisa Williams Md, M.D.San Diego, CA 921201720006398
  16. Krystin WillsBeverly Hills, CA 902111578225751
  17. Derrick Willsey, M.D.Santa Barbara, CA 931051659407963
  18. Matthew WillyerdOxnard, CA 930361053147215
  19. Stephen Wilmot, PT009355Carmichael, CA 956081558416107
  20. Dale Wilms, M.D.Chico, CA 959731336238781
  21. Brian Wilson, M.D.Davis, CA 956161407838782
  22. Evelyn WilsonSan Francisco, CA 941031033446414
  23. Jeannine Wilson, LESan Anselmo, CA 949601629475017
  24. Julian WilsonSacramento, CA 958171487489001
  25. Matthew Wilson, M.D.Temecula, CA 925911548244247
  26. Melinda Wilson, MT-BCNorthridge, CA 913241720426489
  27. Oliver WilsonSan Francisco, CA 941171821520479
  28. Patrice WilsonSan Francisco, CA 941021790059863
  29. Stephen Wilson, M.D.Fremont, CA 945391699739292
  30. Steven Wilson, PHYSICAL THERAPISTEureka, CA 955011134159197
  31. Trisha Wilson, LESan Diego, CA 921081689300162
  32. Allisun WiltshireSacramento, CA 958171093643389
  33. Jean Wims, B.S. PTValencia, CA 913551063681716
  34. Neal Winblad, MFTPleasanton, CA 945661477881464
  35. Julie Winfield, M.D.Tiburon, CA 949201982733473
  36. Kathleen Wingert, BCNIrvine, CA 926181972961936
  37. Michelle Winner, MACampbell, CA 950081962363051
  38. Robert Winokur, M.D.Mission Viejo, CA 926911386608230
  39. Alejandra WinterModesto, CA 953501649623273
  40. Arthur Winterling, M.D.Watsonville, CA 950761003148610
  41. Amy WiseSacramento, CA 958171356277750
  42. Lazaro Wisnia, M.D.Monterey Park, CA 917541528041001
  43. Joy Wisniewski, M.D.Encinitas, CA 920241730479619
  44. Bruce Witmer, M.D.Fresno, CA 937101548286255
  45. Richard Witten, M.D.Los Angeles, CA 900481700882644
  46. Jerrold Wittert, M.D.San Francisco, CA 941141568793107
  47. Christopher Wixom, M.D.San Diego, CA 921231235194879
  48. Mary Woelfel, IBCLCLodi, CA 952401821204520
  49. Daniel Wohlgelernter, M.D.Santa Monica, CA 904041003836651
  50. Mark Wohlgemuth, MDMission Viejo, CA 926911245266873

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.