NPPES file of Aug 9, 2026

Radiation Oncology Physician in South Dakota

22 NPPES records list radiation oncology physician with a practice address in South Dakota, 2.4 per 100,000 residents, the 12th highest rate of 51. Sioux Falls and Rapid City have the most; each record links to the provider's NPI and the South Dakota 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).

Sioux Falls has the most, 12

  1. Sioux Falls12
  2. Rapid City4
  3. Aberdeen2
  4. Watertown2
  5. Mitchell1

Radiation Oncology Physician records in South Dakota

  1. Troy Adolfson, MDAberdeen, SD 574011578794715
  2. Kyle Arneson, M.D.Sioux Falls, SD 571051760625768
  3. Jeffrey Brindle, MDWatertown, SD 572011619906120
  4. Joni Buechler-Price, M.D.Watertown, SD 572011104025113
  5. Stephen Dick, M.D.Mitchell, SD 573011568427144
  6. Eric Eastmo, MDRapid City, SD 577011437144102
  7. Kirsten Erickson, MDSioux Falls, SD 571051336100247
  8. Joel Grow, MDSioux Falls, SD 571051710270061
  9. Michele Lohr, M.D.Sioux Falls, SD 571041215908686
  10. Steven McGraw, MDSioux Falls, SD 571041396702338
  11. Enrique Mendoza, MDAberdeen, SD 574011659487999
  12. Charles Murphy, MDSioux Falls, SD 571051821293952
  13. Collin Noldner, MDSioux Falls, SD 571051063076719
  14. Ryan Nowak, MDSioux Falls, SD 571041265691133
  15. Daniel Petereit, MDRapid City, SD 577011568457257
  16. Michael Peterson, M.D.Yankton, SD 570781336238757
  17. Barbara Schlager, MDSioux Falls, SD 571051134206949
  18. Kathleen Schneekloth, MDSioux Falls, SD 571051891757290
  19. James Simon, MDSioux Falls, SD 571051760484570
  20. Na SmithSioux Falls, SD 571041811350218
  21. Michael Swartz, M.D.Rapid City, SD 577011225174402
  22. Daniel Tackett, MDRapid City, SD 577011457347007

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

South Dakota ranks 12 of 51 per resident

  1. Wisconsin2.6
  2. Washington2.5
  3. Ohio2.5
  4. South Dakota2.4
  5. Michigan2.4
  6. Kansas2.3
  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.

72.7% 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. South Dakota72.7%
  2. United States82.3%

Radiation Oncology Physician records in South Dakota, measured

  • In a Medicare file16 of 22 · 72.7% here, 82.3% nationally
  • In the CMS Doctors and Clinicians file16 · 72.7% here, 74.0% nationally
  • Not updated in five years or more16 · 72.7% here, 54.6% nationally
  • Median graduation year2003 · the 16 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

22 NPPES records list radiation oncology physician (2085R0001X) as their primary taxonomy with a practice address in South Dakota: 2.4 per 100,000 residents against 2.1 nationally (50 states and D.C.). Sioux Falls has 12 of them (55%).

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. North Dakota23
  2. Montana24
  3. Puerto Rico20
  4. Delaware19

States with a similar rate per 100,000

  1. Michigan2.4
  2. Kansas2.3
  3. Florida2.3
  4. New York2.3

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.