NPPES file of Aug 9, 2026

Dermatopathology (Pathology) Physician in California

47 NPPES records list dermatopathology (pathology) physician with a practice address in California, 0.1 per 100,000 residents, the 24th highest rate of 44. Los Angeles and Laguna Beach have the most; each record links to the provider's NPI and the California license search.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207ZD0900X · method

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

Los Angeles has the most, 10

  1. Los Angeles10
  2. Laguna Beach6
  3. West Hills3
  4. Duarte2
  5. San Francisco2

Dermatopathology (Pathology) Physician records in California

  1. Nima Amini, M.D.Los Angeles, CA 900251225456726
  2. Masoud Asgari, M.D.San Ramon, CA 945831467806356
  3. Ronald Barr, M.D.Laguna Beach, CA 926511972608016
  4. Hugh Byers, M.D.San Luis Obispo, CA 934011154451243
  5. Salma Dabiri, M.D.Los Gatos, CA 950321700074143
  6. Raul Delrosario, M.D.Laguna Beach, CA 926511548367402
  7. Julie Duquette, M.D.Newport Beach, CA 926601659471498
  8. Julian Garcia, MDPalmdale, CA 935511790818201
  9. Gregory Gates, D.O.Los Angeles, CA 900951902870892
  10. Emily Green, MDTravis Afb, CA 945351750476826
  11. Matthew Hedberg, MD, PHDDuarte, CA 910101104346063
  12. Joseph Hillman, M.D.Laguna Beach, CA 926511306950415
  13. Cora Humberson, MDLa Jolla, CA 920371154408763
  14. Michelle Hure, M.D.San Juan Capistrano, CA 926751760656169
  15. Brenda Javier, MDWest Hills, CA 913041669695169
  16. Justin Kerstetter, M.D.Loma Linda, CA 923541629241054
  17. Stevan KnezevichClovis, CA 936111134333511
  18. Philip Leboit, M.D.San Francisco, CA 941151154385938
  19. Frank Luo, MDPasadena, CA 911031730114521
  20. Lawrence Machtinger, M.D.Laguna Beach, CA 926511750488607
  21. Timothy McCalmont, M.D.Walnut Creek, CA 945981275598732
  22. Takako Mitsuhashi, M.D.,PH.D.Irvine, CA 926121720290752
  23. Joshua Mo, MDLos Angeles, CA 900951003435181
  24. Matthew Muenster, MDFresno, CA 937271083817548
  25. Thaddeus Mully, M.D.San Francisco, CA 941431174519607
  26. Alex Ngo, M.D.West Hills, CA 913041124245824
  27. Gary Oliver, MDDaly City, CA 940151073599411
  28. Vishwas Parekh, M.D.Duarte, CA 910101982960266
  29. Stacey Pun, MDLos Angeles, CA 900171851763783
  30. Kittane Ranganath, MDLos Angeles, CA 900731376633420
  31. Brian Roehmholdt, M.D., PH.D.Fontana, CA 923351083891782
  32. Jochen Schaefer, M.DSanta Monica, CA 904031831356757
  33. Honggang Shen, M.D.Los Angeles, CA 900641366646283
  34. Linda Shi, MD, PHDWest Hills, CA 913041962627380
  35. Oliver Stanton, M.D.Woodland, CA 956951427142397
  36. Lyndon Su, MDLos Angeles, CA 900641922180801
  37. Belinda Tan, MDTorrance, CA 905031861690299
  38. Emma Taylor, MDLos Angeles, CA 900951356407076
  39. Khanh Tran, M.D.San Diego, CA 921011427066869
  40. Raelynn Tucker, M.D.Laguna Beach, CA 926511356577258
  41. Christopher Vanley, M.D.Laguna Beach, CA 926511043318512
  42. Victoria Vaughan, M.D.Chico, CA 959261528454907
  43. Laura Westerling, M.D.Los Angeles, CA 900951629248299
  44. Roupen Yaghsezian, MDLaguna Niguel, CA 926771215051669
  45. Changgao Yang, MDSeal Beach, CA 907401366435638
  46. Sharona Yashar, MDLos Angeles, CA 900951982722815
  47. Reggie Zhan, M.D.Carmichael, CA 956081235174640

Source: CMS NPPES, primary taxonomy 207ZD0900X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 24 of 44 per resident

  1. Virginia0.1
  2. North Carolina0.1
  3. Nevada0.1
  4. California0.1
  5. Michigan0.1
  6. Colorado0.1
  7. 50 states and D.C.0.1

Source: CMS NPPES, primary taxonomy 207ZD0900X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

78.7% of these records appear in a Medicare file, against 65.1% 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. California78.7%
  2. United States65.1%

Dermatopathology (Pathology) Physician records in California, measured

  • In a Medicare file37 of 47 · 78.7% here, 65.1% nationally
  • In the CMS Doctors and Clinicians file33 · 70.2% here, 56.1% nationally
  • Not updated in five years or more35 · 74.5% here, 61.6% nationally
  • Median graduation year2000 · the 33 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207ZD0900X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

47 NPPES records list dermatopathology (pathology) physician (207ZD0900X) as their primary taxonomy with a practice address in California: 0.1 per 100,000 residents against 0.1 nationally (50 states and D.C.). Los Angeles has 10 of them (21%).

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. New York47
  2. Florida58
  3. Georgia26
  4. Texas26

States with a similar rate per 100,000

  1. Michigan0.1
  2. North Carolina0.1
  3. Virginia0.1
  4. Tennessee0.1

The largest states

  1. Florida58
  2. New York47
  3. Georgia26
  4. Texas26
  5. Pennsylvania23

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.