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 38 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. Benjamin Tran, MDPasadena, CA 911051386263317
  2. Donna Tran, D.ONewport Beach, CA 926631457614919
  3. Duy Tran, MDSunnyvale, CA 940861679035208
  4. Hai Tran, M.D.Victorville, CA 923951093763104
  5. Hien Tran, M.D.-PH.D.Irvine, CA 926041487851408
  6. Mark Tran, M.D.Corona Del Mar, CA 926251205098696
  7. Samantha Tran, MDIrvine, CA 926141306469838
  8. An Tranvan, MDSan Jose, CA 951161801992847
  9. Naomi Travers, NPPoway, CA 920641639550833
  10. Shanna Treanor, MDBakersfield, CA 933091700895018
  11. Thomas Triplett, D.O.Brentwood, CA 945131316203649
  12. Cameron TrodelloLaguna Hills, CA 926531144717901
  13. Anne Truitt, M.D.San Diego, CA 921271306096680
  14. Allison Truong, M.D.Beverly Hills, CA 902111356728299
  15. Amanda Truong, MD, PHDLos Angeles, CA 900951598405748
  16. Khanh Truong, M.D.Santa Rosa, CA 954031619962552
  17. Sam Truong, M.D.Lake Forest, CA 926301841516689
  18. Sarah Truong, MDRancho Cordova, CA 956701992883565
  19. Eunice Tsai, M.D.Union City, CA 945871609070051
  20. Young Tsai, M.D.San Diego, CA 921211881984391
  21. Arline Tsuchiya, MDAnaheim, CA 928071114098167
  22. Joanna Tu, M.D.San Francisco, CA 941151508392887
  23. Melanie Tuerk, MDSacramento, CA 958161619125481
  24. Lucia Tuffanelli, MDSan Francisco, CA 941081760474894
  25. Paul Tumeh, M.D.Los Angeles, CA 900951124281605
  26. Tin Tin Tun, MDMountain View, CA 940401497706816
  27. Joy Twersky, M.D.Woodland Hills, CA 913671699888156
  28. Amanda Twigg, M.D.San Francisco, CA 941151902196454
  29. Abhilasha Tyagi, MDNational City, CA 919501609262963
  30. Sabrina UddinAnaheim, CA 928011407275217
  31. Ari Udugama, M.D.Union City, CA 945871093893851
  32. Douglas Ulmer, MDLong Beach, CA 908131225068984
  33. Sanusi Umar, M.D.Redondo Beach, CA 902771982797593
  34. Patrick UnemoriPalo Alto, CA 943011811194814
  35. Seth Vaccaro, M.D.Pasadena, CA 911051477560951
  36. Manjunath Vadmal, M.D.Burbank, CA 915051043228083
  37. Janet Vafaie, M.D.Los Angeles, CA 900241942465232
  38. Charles Vainder, MDGlendale, CA 912081700296829
  39. John Valentic, M.D.Ukiah, CA 954821104963008
  40. Phillip Valentine, M.D.Torrance, CA 905031306884416
  41. Livia Van, MDSan Jose, CA 951191023262185
  42. Shirley Van, MDSan Luis Obispo, CA 934011063530749
  43. Byron Van Dyke, M.D.Redding, CA 960011821084443
  44. Gregory Van Dyke, MD, PHDStudio City, CA 916041841328614
  45. Ruth Vanderplas, M.D.La Quinta, CA 922531235233743
  46. Amy VandiverLos Angeles, CA 900951740716190
  47. Thomas Vanmeter, M.D.Santa Barbara, CA 931111205832813
  48. Joellen Vanzander, MDMenlo Park, CA 940251881819019
  49. Katherine Varman, MDLincoln, CA 956481780942607
  50. Marjon Vatanchi, M.D.Irvine, CA 926181073951109

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.