NPPES file of Aug 9, 2026

Occupational Medicine Physician in California

415 NPPES records list occupational medicine physician with a practice address in California, 1.1 per 100,000 residents, the 14th highest rate of 50. San Diego and San Francisco have the most; each record links to the provider's NPI and the California license search. Page 4 of 9.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 2083X0100X · 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, 37

  1. San Diego37
  2. San Francisco24
  3. Los Angeles23
  4. Sacramento16
  5. Oakland11

Occupational Medicine Physician records in California

  1. Jeffery Hess, M.D., M.S.Sunnyvale, CA 940891790014835
  2. Donna Hickox, MDSan Jose, CA 951191770669293
  3. Sunita HiraniSan Francisco, CA 941431306173992
  4. Brian Hoang, PASan Diego, CA 921211073239646
  5. Christopher Holmes, MEDICAL DOCTORTemecula, CA 925901083710669
  6. William Hopper, MDOakland, CA 946071447439765
  7. Matthew Horch, MDTwentynine Palms, CA 922781679107601
  8. Andrew Horpeniuk, M.D., M.P.H.Saint Helena, CA 945741851355705
  9. Alan Hsu, MDFremont, CA 945381760560247
  10. Barry Huang, MDLos Angeles, CA 900451316961550
  11. Michael Hughes, M.D.La Mesa, CA 919421831109255
  12. Corky Hull, M.D.Stockton, CA 952031245351378
  13. Pamela Hymel, MDAnaheim, CA 928021437588944
  14. Kathlyn Ignacio, M.D.San Diego, CA 921231912917345
  15. Rudolf Iskandar, M.D.Rancho Cordova, CA 956701154420669
  16. Leslie M Israel, DOOrange, CA 928681285714451
  17. Bernice Jackson, M.D.Los Angeles, CA 900121003146168
  18. Eric Jackson-Scott, M.D.Santa Cruz, CA 950601467630806
  19. Wali Jahangiri, MDRedwood City, CA 940631962990036
  20. Shahzad Jahromi, MDFresno, CA 937201215009964
  21. Arvind Jaini, MDMilpitas, CA 950351437201654
  22. Jacqueline Jayne, M.D.San Francisco, CA 941101063610079
  23. Badi Jeffers, DOAnaheim, CA 928071205907128
  24. Philip Jenkins, MDWalnut Creek, CA 945961467530550
  25. Vikas Jindal, MDLancaster, CA 935341023285244
  26. Ling Jing, D.O.San Diego, CA 921031073810636
  27. Diana Johns, MDMilpitas, CA 950351639213564
  28. Dana Johnson, MDRiverside, CA 925051689734857
  29. Hannah Johnson, MPAS, PA-CChico, CA 959261477182053
  30. Marc Johnson, MDSalinas, CA 939071033251681
  31. Paul Johnson, MDSan Francisco, CA 941151396823993
  32. Sarah Johnson, MDSacramento, CA 958161588000913
  33. Patricia Jones, MDAntioch, CA 945091760560841
  34. Randolph Jones, MDSanta Ana, CA 927051871751206
  35. David Jourgensen, M.D.Oakland, CA 946071073638243
  36. Haitham Juma, M.D.Loma Linda, CA 923541578700332
  37. Lyle Justesen, M.D.Sacramento, CA 958161093826125
  38. Lavanya Kailar, MDSan Jose, CA 951191477625127
  39. Elizabeth Kaiser, MDSan Jose, CA 951191255410387
  40. Mitra Kamali, M.D.Bakersfield, CA 933011821375403
  41. Sachin Kapoor, DOAntioch, CA 945091780762864
  42. Ronit Katz, MDPalo Alto, CA 943041396954475
  43. Hilary Kauffman, MDWalnut Creek, CA 945961124106281
  44. David Kaye, DOSouth San Francisco, CA 940801730271040
  45. Nasrin KazemiLoma Linda, CA 923541699209163
  46. Patrick Keller, MDLivermore, CA 945501013972520
  47. Lisa Key, MDSouth San Francisco, CA 940801558449165
  48. Alya Khan, M.D.Irvine, CA 926121730312729
  49. Prerna Khanna, MDPalm Springs, CA 922621841472826
  50. Jin Kim, MDCupertino, CA 950141760561401

Source: CMS NPPES, primary taxonomy 2083X0100X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 14 of 50 per resident

  1. Maryland1.1
  2. Connecticut1.1
  3. New Hampshire1.1
  4. California1.1
  5. New Mexico1.0
  6. Alaska1.0
  7. 50 states and D.C.0.8

Source: CMS NPPES, primary taxonomy 2083X0100X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

29.6% of these records appear in a Medicare file, against 26.1% 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. California29.6%
  2. United States26.1%

Occupational Medicine Physician records in California, measured

  • In a Medicare file123 of 415 · 29.6% here, 26.1% nationally
  • In the CMS Doctors and Clinicians file51 · 12.3% here, 10.7% nationally
  • Not updated in five years or more311 · 74.9% here, 70.9% nationally
  • Median graduation year1995 · the 51 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 2083X0100X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

415 NPPES records list occupational medicine physician (2083X0100X) as their primary taxonomy with a practice address in California: 1.1 per 100,000 residents against 0.8 nationally (50 states and D.C.). San Diego has 37 of them (9%).

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. Texas168
  2. Ohio109
  3. Pennsylvania103
  4. Washington102

States with a similar rate per 100,000

  1. New Hampshire1.1
  2. New Mexico1.0
  3. Connecticut1.1
  4. Maryland1.1

The largest states

  1. Texas168
  2. Ohio109
  3. Pennsylvania103
  4. Washington102
  5. Colorado93

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.