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 35 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. William Shipman, MD, PHDBurbank, CA 915051073142238
  2. Azadeh Shirazi, MDLa Jolla, CA 920371679557144
  3. Sophie ShirinEncino, CA 914361114106093
  4. Jane Shiu, MDRedding, CA 960011073542148
  5. Jessica ShiuIrvine, CA 926971134514888
  6. Divya Shokeen, M.DTustin, CA 927801205270832
  7. Rebecca Shpall, MDFremont, CA 945381043386527
  8. Steven Shpall, MDMountain View, CA 940411548347487
  9. Vikas Shrivastava, M.D.San Diego, CA 921341033345731
  10. Maryam Sickinger, D.O.Palm Desert, CA 922111841514049
  11. Faryal Siddiqui, MDLa Jolla, CA 920371003342072
  12. Qanwarpartap Sidhu, MDLancaster, CA 935341093341968
  13. Ann Siefert, M.D.Coronado, CA 921181982714119
  14. Joel Siegel, M.D.Oxnard, CA 930301528056868
  15. Robert Sigafoes, MDSan Diego, CA 921201558420117
  16. Diane Silver, MDNapa, CA 945591578533964
  17. Eli Silver, M.D.Napa, CA 945581245581123
  18. Nancy Silverberg, MDNewport Beach, CA 926601083602023
  19. Marc Silverstein, M.D.Sacramento, CA 958251104869155
  20. Salma Simjee, MDFresno, CA 937201497730527
  21. Azita Simoni, MDThousand Oaks, CA 913611366418931
  22. Gregory Simpson, M.D.Fresno, CA 937011740488238
  23. Karen Simpson, MDBrea, CA 928211376544189
  24. Soheil Simzar, M.D.Santa Monica, CA 904041780881797
  25. Babu Singh, M.D.Roseville, CA 957471407293665
  26. Carrie Siow, MDSan Diego, CA 921221275094013
  27. David Sire, M.D.Fullerton, CA 928351710046628
  28. Melissa Sirichotiratana, M.D.Oceanside, CA 920561689961468
  29. Raja Sivamani, M.D., M.S., A.H.E.Sacramento, CA 958151811197478
  30. E. Robin Slovak, MDWalnut Creek, CA 945981073665881
  31. Ashley Smith, MDSausalito, CA 949651053579979
  32. Douglas Smith, MDSeal Beach, CA 907401497809396
  33. Eric Smith, M.D.Palo Alto, CA 943041114997277
  34. Janellen Smith, MDIrvine, CA 926181811948789
  35. Mary SmithSacramento, CA 958161285262493
  36. Paul Smith, MDSanta Monica, CA 904041063480473
  37. Stacy Smith, M.D.Encinitas, CA 920241780651760
  38. Zoe Smith, MDBeverly Hills, CA 902101265054340
  39. Jan SmogorzewskiLos Angeles, CA 900331710366760
  40. Kara Smolinski, MDSan Diego, CA 921211710007026
  41. Arthur Snyder, MDSherman Oaks, CA 914031407129539
  42. Jane Snyder, MDMountain View, CA 940401235325465
  43. Jessica So, M.D.La Mesa, CA 919421174813356
  44. Naomi So, MDMountain View, CA 940401043770407
  45. Fred Soeprono, M.D.Loma Linda, CA 923541659485746
  46. Howard Sofen, M.D.Los Angeles, CA 900451124026554
  47. Grace Sohn, M.D.Walnut Creek, CA 945981023405727
  48. Teo Soleymani, M.DPasadena, CA 911051447679865
  49. Jason Solway, D.O.Santa Barbara, CA 931051306229646
  50. Brian Somoano, M.D.Fullerton, CA 928351245422658

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.