NPPES file of Aug 9, 2026

Occupational Medicine Physician in Oklahoma

28 NPPES records list occupational medicine physician with a practice address in Oklahoma, 0.7 per 100,000 residents, the 29th highest rate of 50. Oklahoma City and Tulsa have the most; each record links to the provider's NPI and the Oklahoma license search.

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).

Oklahoma City has the most, 9

  1. Oklahoma City9
  2. Tulsa8
  3. Edmond2
  4. Enid2
  5. Tinker Afb2

Occupational Medicine Physician records in Oklahoma

  1. Philip Beck, D.OTinker Afb, OK 731451154353282
  2. Gary Boyer, D.O.Chickasha, OK 730181982763249
  3. Jean Felix Cyriaque, M.D.,M.P.HEdmond, OK 730131528023066
  4. Randel Estep, DOOklahoma City, OK 731271073512711
  5. William Gillock, M.D.Tulsa, OK 741361659427391
  6. John Hallford, M.D.Tulsa, OK 741071366560104
  7. Matthew Hamm, MD, MPHEdmond, OK 730131083058168
  8. David HardyTinker Air Force Base, OK 731181518928407
  9. Tiari Harris, MD MPHTulsa, OK 741041548383003
  10. William Jones IV, M.D.Oklahoma City, OK 731031073694907
  11. Edward King, M.D.Tinker Afb, OK 731451184612152
  12. Gary Massad, MDOklahoma City, OK 731161851509236
  13. Myron Mills, M.D.Oklahoma City, OK 731081174650782
  14. Gregory Mitchell, MDTulsa, OK 741151922137926
  15. Debra Montgomery, D.O., M.P.H.Oklahoma City, OK 731591891825337
  16. Christian Nielsen, D.O.Tulsa, OK 741151932227691
  17. Jeffrey Pardee, M.D.Oklahoma City, OK 731391245361500
  18. William Parsons, MDBartlesville, OK 740041730204975
  19. Gary Patzkowsky, D.O.Enid, OK 737011912990896
  20. Angel Rivera, M.D.Oklahoma City, OK 731141861511396
  21. Cindy Rogers, MD MPHEnid, OK 737011346252145
  22. Gregory Rogers, D.O.McAlester, OK 745011700816238
  23. Lee Schafer, COTATulsa, OK 741261629494000
  24. Karen Smallwood Ryan, M.D.Tulsa, OK 741121437134657
  25. Robert Swicord, M.D.Oklahoma City, OK 731341417120023
  26. Katelin Thai, D.O.Altus Afb, OK 735231063894467
  27. Terry Wagner, M.D.Tulsa, OK 741451134247802
  28. Leroy Young, DOOklahoma City, OK 731031659613305

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

Oklahoma ranks 29 of 50 per resident

  1. Arizona0.8
  2. Oregon0.7
  3. Idaho0.7
  4. Oklahoma0.7
  5. Virginia0.7
  6. South Carolina0.7
  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.

35.7% 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. Oklahoma35.7%
  2. United States26.1%

Occupational Medicine Physician records in Oklahoma, measured

  • In a Medicare file10 of 28 · 35.7% here, 26.1% nationally
  • In the CMS Doctors and Clinicians file2 · 7.1% here, 10.7% nationally
  • Not updated in five years or more23 · 82.1% here, 70.9% nationally

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

28 NPPES records list occupational medicine physician (2083X0100X) as their primary taxonomy with a practice address in Oklahoma: 0.7 per 100,000 residents against 0.8 nationally (50 states and D.C.). Oklahoma City has 9 of them (32%).

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. West Virginia28
  2. Nevada27
  3. Kentucky26
  4. Alabama25

States with a similar rate per 100,000

  1. Virginia0.7
  2. Idaho0.7
  3. South Carolina0.7
  4. Oregon0.7

The largest states

  1. California415
  2. Texas168
  3. Ohio109
  4. Pennsylvania103
  5. Washington102

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.