NPPES file of Aug 9, 2026

Dermatology Physician in California

2,083 NPPES records list dermatology physician with a practice address in California, 5.3 per 100,000 residents, the 12th highest rate of 51. San Diego and Los Angeles have the most; each record links to the provider's NPI and the California license search. Page 40 of 42.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207N00000X · method

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

San Diego has the most, 152

  1. San Diego152
  2. Los Angeles144
  3. San Francisco134
  4. Sacramento73
  5. Stanford59

Dermatology Physician records in California

  1. Maria Wei, M.D., PH.D.San Francisco, CA 941211689640864
  2. Zhi-Gang Wei, MDFontana, CA 923351831258417
  3. Anne Weilepp, MDSanta Rosa, CA 954031598844631
  4. David Weinberg, MDHillsborough, CA 940101679566608
  5. James Weintraub, MDWestlake Village, CA 913611033277231
  6. David Weiss, MD, PHDWest Hollywood, CA 900481205415460
  7. Hal Weitzbuch, M.D., M.S., FAADCalabasas, CA 913021669629317
  8. Ryan Wells, M.D.Ventura, CA 930031184697658
  9. Kathleen Welsh, MDSan Francisco, CA 941151851459994
  10. Fred Werber, M.D.Ventura, CA 930031487652046
  11. Naissan Wesley, M.D.Los Angeles, CA 900691922130608
  12. Donna West, MDNewport Beach, CA 926601932283561
  13. Suzanne Westphal, MDSausalito, CA 949651780676908
  14. Dale Westrom, M.D., PH.D.Santa Rosa, CA 954041922032077
  15. Gary White, MDSan Diego, CA 921021437208758
  16. Sara Whitehead, M.D.Palo Alto, CA 943011053750240
  17. William Wickwire, MDRedondo Beach, CA 902771699779660
  18. Sheila Widyolar, MDLaguna Hills, CA 926531174527105
  19. Joshua Wieder, MDLos Angeles, CA 900251750315404
  20. Tracy Wiegand, PANewport Beach, CA 926601689328106
  21. Matthew Willett, M.D.Camp Pendleton, CA 920551720328107
  22. Eric Williams, MDLos Angeles, CA 900951982825238
  23. Jazzmin Williams, M.D.San Francisco, CA 941151750083630
  24. Kiyanna Williams, MDRancho Mirage, CA 922701487008751
  25. Mary Williams, MDSan Francisco, CA 941151487603759
  26. Richard Williams, MDLong Beach, CA 908221710068556
  27. Victoria Williams, M.D.San Diego, CA 921211942592183
  28. Mark Willoughby, M.D.Chula Vista, CA 919101215931993
  29. Monique Wilson, MDLos Gatos, CA 950321114181914
  30. Vernon Wilson, M.D.Torrance, CA 905051114983467
  31. Carl Gustaf Marten Winge, MD, PHDStanford, CA 943051942704259
  32. Richard Winkelmann, D.O.Downey, CA 902411720427024
  33. Mitchell Winkie, MD, MBASan Diego, CA 921341447013073
  34. Aubrey Winn, M.D.Monterey, CA 939401861803330
  35. Joseph Winship, MDBellflower, CA 907061366513319
  36. Bruce Wintroub, MDSan Francisco, CA 941151487604286
  37. David Wolf, MDOceanside, CA 920561134160823
  38. Susan Wolf, M.D.San Mateo, CA 944011043206261
  39. Laurie Woll, DOMontclair, CA 917631891865044
  40. Paige Wolstencroft, MDStanford, CA 943051578023669
  41. Christopher Wong, DONewport Beach, CA 926631528696200
  42. Darryl Wong, MDOceanside, CA 920561952342693
  43. David Wong, MD, PHDStanford, CA 943051316972201
  44. Henry Wong, M.D., PH.D.San Diego, CA 921031437237567
  45. Linda Wong, MDBaldwin Park, CA 917061689741506
  46. Lulu Wong, MDTorrance, CA 905021962068106
  47. Michael Wong, MDLaguna Hills, CA 926531780771162
  48. Nancy Wong, MDPalo Alto, CA 943011942716196
  49. Patricia Wong, MDPalo Alto, CA 943011629138847
  50. Reynold Wong, MDRoseville, CA 956611962581694

Source: CMS NPPES, primary taxonomy 207N00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 12 of 51 per resident

  1. Maryland5.5
  2. Wisconsin5.5
  3. Florida5.4
  4. California5.3
  5. Pennsylvania5.3
  6. Utah5.2
  7. 50 states and D.C.4.7

Source: CMS NPPES, primary taxonomy 207N00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

83.2% of these records appear in a Medicare file, against 84.6% 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. California83.2%
  2. United States84.6%

Dermatology Physician records in California, measured

  • In a Medicare file1,733 of 2,083 · 83.2% here, 84.6% nationally
  • In the CMS Doctors and Clinicians file1,450 · 69.6% here, 72.6% nationally
  • Not updated in five years or more1,207 · 57.9% here, 54.0% nationally
  • Median graduation year2006 · the 1,450 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207N00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

2,083 NPPES records list dermatology physician (207N00000X) as their primary taxonomy with a practice address in California: 5.3 per 100,000 residents against 4.7 nationally (50 states and D.C.). San Diego has 152 of them (7%).

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. Florida1,213
  2. New York1,211
  3. Texas1,172
  4. Pennsylvania681

States with a similar rate per 100,000

  1. Utah5.2
  2. Wisconsin5.5
  3. Colorado5.2
  4. Maryland5.5

The largest states

  1. Florida1,213
  2. New York1,211
  3. Texas1,172
  4. Pennsylvania681
  5. Illinois647

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.