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 24 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. Ern Loh, M.D.Redwood City, CA 940631144450917
  2. Kimberly Lomax, MSN-FNPFresno, CA 937101649124173
  3. Austin Longberg, D.OMission Viejo, CA 926911336503416
  4. Michelle Longmire, M.D.Stanford, CA 943051659691723
  5. Aleda Longwell, MDDanville, CA 945261093960643
  6. Sumala LopansriMonterey Park, CA 917541962574426
  7. David Lortscher, M.D.San Diego, CA 921211285891150
  8. Jacqueline Losi-Sasaki, M.D.Chico, CA 959261285781492
  9. Nicholas Love, MDSacramento, CA 958161932735925
  10. Nicholas Lowe, MDLos Angeles, CA 900951265466858
  11. Stefan Lowenstein, MDMill Valley, CA 949411245728807
  12. Linh Lu, MDFontana, CA 923351548316144
  13. Peter Lu, MDFremont, CA 945381275005209
  14. Casey Lubner, MDLos Angeles, CA 900251205331071
  15. Debra Luftman, MDCalabasas, CA 913021063524270
  16. Janiene Luke, MDLoma Linda, CA 923541700048634
  17. Dianne Michelle Lumaquin-Yin, MD, PHDSan Diego, CA 921221649039033
  18. Mia Luna, M.D.Redlands, CA 923731508996141
  19. Jason Lupton, M.D.San Diego, CA 921301659392587
  20. Frank Lusher, MDMission Hills, CA 913451912096280
  21. Steven Lutzker, MDPorterville, CA 932571548442890
  22. Minnelly Luu, MDLos Angeles, CA 900271134390651
  23. Mychael Luu, M.D.San Jose, CA 951281093718546
  24. Willis Lyford, M.D.San Diego, CA 921341760877633
  25. Rikk Lynn, M.D.Santa Barbara, CA 931031437355260
  26. Chelsea Ma, MDStanford, CA 943051871936575
  27. Janice Ma, MDPasadena, CA 911011306330410
  28. Jamie Macdougall, MDManhattan Beach, CA 902661932186582
  29. Michael Macduff, MDBakersfield, CA 933011073683710
  30. David Macgregor, M.DSan Francisco, CA 941081235162447
  31. Edgar Macias, M.D.Fresno, CA 937201144482373
  32. Shabnam Madani, MDWalnut Creek, CA 945981972681476
  33. John Maddox, MDGreenbrae, CA 949041790837508
  34. Jalal Maghfour, MDEncinitas, CA 920241902433634
  35. Morgan Magid, MDSanta Cruz, CA 950651417958273
  36. Ashley Magovern, M.D.Manhattan Beach, CA 902661770761207
  37. Howard Maibach, M.D.San Francisco, CA 941431912930470
  38. Mark Maida, MDLos Alamitos, CA 907201144378175
  39. Michele Mak-Fung, M.D.San Jose, CA 951241174661086
  40. Janet Maldonado, M.D.Burlingame, CA 940101518099977
  41. Daria Maldonado-Knapp, M.D.Monterey, CA 939401659482149
  42. Devon Malecki, MDLaguna Beach, CA 926511215584388
  43. Comron Maleki, MDThousand Oaks, CA 913601730113408
  44. Bruce Maltz, M.D.San Mateo, CA 944011871694315
  45. Neeta Malviya, MDElk Grove, CA 957581487189593
  46. Nancy Maly, M.D.Chula Vista, CA 919131073874178
  47. Tyler Maly, M.D.Irvine, CA 926971316382500
  48. Catherine Manabat-Hidalgo, MDFresno, CA 937261356670087
  49. Helen Manber, MDSan Francisco, CA 941181154354363
  50. Hilary Mandel, M.D.Sepulveda, CA 913431285669267

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.