NPPES file of Aug 9, 2026

Radiation Oncology Physician in Montana

24 NPPES records list radiation oncology physician with a practice address in Montana, 2.1 per 100,000 residents, the 22nd highest rate of 51. Billings and Great Falls have the most; each record links to the provider's NPI and the Montana license search.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 2085R0001X · method

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

Billings has the most, 6

  1. Billings6
  2. Great Falls4
  3. Missoula4
  4. Kalispell3
  5. Bozeman2

Radiation Oncology Physician records in Montana

  1. Christopher Baker, M.D.Bozeman, MT 597151609223932
  2. Richard Belgrad, M.D.Bozeman, MT 597151023061488
  3. Joseph Clyde, MDGreat Falls, MT 594051710478698
  4. Berna Demalignon, M.D.Great Falls, MT 594051770560948
  5. Jeffrey Eshleman, M.D.Kalispell, MT 599011770561433
  6. Christopher Goulet, M.D.Billings, MT 591011437137155
  7. Eugene Hughes, M.D.Butte, MT 597011952519761
  8. Ralf Kiehl, MDSidney, MT 592701760483788
  9. Frank Lamm, MDBillings, MT 591021417949033
  10. Justin Linam, M.D.Kalispell, MT 599011750727152
  11. Katherine Markette, M.D.Missoula, MT 598021407806987
  12. Margaret Menendez, M.D.Missoula, MT 598021447208079
  13. Trent Mihalick, M.D.Billings, MT 591021942306063
  14. Marc Nash, MDButte, MT 597011205162922
  15. Robert Pfeffer, M.D.Sidney, MT 592701679563639
  16. Michelle Proper, M.D.Missoula, MT 598041003088634
  17. Carolyn Rutter, MDGreat Falls, MT 594051912016767
  18. John Schallenkamp, MDBillings, MT 591011265455018
  19. Jeffrey Stephenson, MDMissoula, MT 598021053312900
  20. Gordon Stillie, D.O.Kalispell, MT 599011316993082
  21. Elizabeth Tapen, MDBig Sky, MT 597161134108525
  22. Rebecca Tarlton, MDBillings, MT 591021083655393
  23. Breanne Terakedis, M.D.Billings, MT 591011609010578
  24. Kelly Underhill, M.D.Great Falls, MT 594051447275870

Source: CMS NPPES, primary taxonomy 2085R0001X: records by practice city and the list of records, file of Aug 9, 2026.

Montana ranks 22 of 51 per resident

  1. Missouri2.2
  2. Vermont2.2
  3. North Carolina2.1
  4. Montana2.1
  5. Arizona2.1
  6. West Virginia2.1
  7. 50 states and D.C.2.1

Source: CMS NPPES, primary taxonomy 2085R0001X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

79.2% of these records appear in a Medicare file, against 82.3% 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. Montana79.2%
  2. United States82.3%

Radiation Oncology Physician records in Montana, measured

  • In a Medicare file19 of 24 · 79.2% here, 82.3% nationally
  • In the CMS Doctors and Clinicians file19 · 79.2% here, 74.0% nationally
  • Not updated in five years or more11 · 45.8% here, 54.6% nationally
  • Median graduation year1997 · the 19 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 2085R0001X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

24 NPPES records list radiation oncology physician (2085R0001X) as their primary taxonomy with a practice address in Montana: 2.1 per 100,000 residents against 2.1 nationally (50 states and D.C.). Billings has 6 of them (25%).

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. Idaho25
  2. North Dakota23
  3. District of Columbia26
  4. New Mexico26

States with a similar rate per 100,000

  1. North Carolina2.1
  2. Arizona2.1
  3. West Virginia2.1
  4. Iowa2.1

The largest states

  1. California735
  2. Florida520
  3. New York449
  4. Texas449
  5. Pennsylvania383

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.