NPPES file of Aug 9, 2026

Preventive Medicine/Occupational Environmental Medicine Physician in California

129 NPPES records list preventive medicine/occupational environmental medicine physician with a practice address in California, 0.3 per 100,000 residents, the 16th highest rate of 49. San Francisco and San Diego have the most; each record links to the provider's NPI and the California license search. Page 3 of 3.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 2083P0500X · method

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

San Francisco has the most, 19

  1. San Francisco19
  2. San Diego11
  3. Los Angeles5
  4. Camp Pendleton4
  5. Sacramento4

Preventive Medicine/Occupational Environmental Medicine Physician records in California

  1. Gonzalo Ruiz, M.D.Lake Forest, CA 926301982613253
  2. Margaret Ryan, MD, MPHSan Diego, CA 921861619977618
  3. Maryam Sadeghi, MDUkiah, CA 954821861913683
  4. Ignacio Santana, MD, MPHMerced, CA 953411780189233
  5. Meredith Saunders, M.D.Oakland, CA 946211922016302
  6. Virginia Schaefer, MDLaguna Beach, CA 926511790952190
  7. Christine Schindler, D.O.San Diego, CA 921361881663581
  8. Rugmini Shah, M.DGranite Bay, CA 957461336333608
  9. Miriam Shipp, M.D., M.P.H.San Francisco, CA 941071255486395
  10. Matthew Sies, M.D.Los Angeles, CA 900561518171826
  11. Gina Solomon, M.D., M.P.H.San Francisco, CA 941151174536734
  12. Charity Styles, D.O., M.P.H.Menlo Park, CA 940251497923247
  13. Roger Tauran, M.D., M.P.H.Lakewood, CA 907121336241900
  14. Frances Taylor, M.D., M.P.H.San Francisco, CA 941231932486040
  15. William Trolan, MDSanta Clara, CA 950501396889051
  16. Jeff TzengUniversal City, CA 916081215087275
  17. Charity Underwood Eshleman, MDSan Bernardino, CA 924081477298735
  18. Jaime Vega, D.O., M.P.H.Camp Pendleton, CA 920551265511869
  19. Jeffrey Vogel, M.D.Rancho Santa Margarita, CA 926881114218682
  20. Robert WagnerBerkeley, CA 947101558499079
  21. Linda Watanabe, RNRedwood City, CA 940631023678661
  22. Ronald Wempen, MDIrvine, CA 926181497880538
  23. Paula West, M.D.San Diego, CA 921031447262795
  24. Norman Westhoff, M.D.Santa Rosa, CA 954011518010347
  25. Jay Westphal, M.D.Irvine, CA 926141457605115
  26. Janet Whitney, DO, MPHChico, CA 959261891758157
  27. Rhea Wong, M.D.Fresno, CA 937211023159043
  28. Lee Wugofski, MD, MPHSan Francisco, CA 941031235409665
  29. Cary Young, M.D.South San Francisco, CA 940801306933973

Source: CMS NPPES, primary taxonomy 2083P0500X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 16 of 49 per resident

  1. New Mexico0.4
  2. Oklahoma0.4
  3. Kentucky0.3
  4. California0.3
  5. Illinois0.3
  6. South Dakota0.3
  7. 50 states and D.C.0.3

Source: CMS NPPES, primary taxonomy 2083P0500X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

31.8% of these records appear in a Medicare file, against 26.0% 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. California31.8%
  2. United States26.0%

Preventive Medicine/Occupational Environmental Medicine Physician records in California, measured

  • In a Medicare file41 of 129 · 31.8% here, 26.0% nationally
  • In the CMS Doctors and Clinicians file14 · 10.9% here, 9.3% nationally
  • Not updated in five years or more87 · 67.4% here, 67.9% nationally
  • Median graduation year1991 · the 14 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 2083P0500X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

129 NPPES records list preventive medicine/occupational environmental medicine physician (2083P0500X) as their primary taxonomy with a practice address in California: 0.3 per 100,000 residents against 0.3 nationally (50 states and D.C.). San Francisco has 19 of them (15%).

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. Texas53
  2. New York51
  3. Georgia50
  4. Washington45

States with a similar rate per 100,000

  1. Kentucky0.3
  2. Illinois0.3
  3. Wisconsin0.3
  4. Puerto Rico0.3

The largest states

  1. Texas53
  2. New York51
  3. Georgia50
  4. Washington45
  5. Colorado42

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.