NPPES file of Aug 9, 2026

Hematology & Oncology Physician in South Dakota

31 NPPES records list hematology & oncology physician with a practice address in South Dakota, 3.4 per 100,000 residents, the 36th 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 207RH0003X · 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, 22

  1. Sioux Falls22
  2. Rapid City3
  3. Watertown2
  4. Yankton2
  5. Aberdeen1

Hematology & Oncology Physician records in South Dakota

  1. Ferdinand Addo, MDWatertown, SD 572011760461388
  2. Bayan Al Share, MDRapid City, SD 577011235582065
  3. Ghassan Al-Shbool, MDRapid City, SD 577011215450937
  4. Bipinkumar Amin, MDWatertown, SD 572011568415628
  5. Jonathan Bleeker, MDSioux Falls, SD 571041457573974
  6. Richard Conklin, MDAberdeen, SD 574011851394662
  7. Max Farver, MDYankton, SD 570781548261548
  8. Roberto Ferro Valdes, M.D.Sioux Falls, SD 571051861780108
  9. Keely Hack, M.D.Sioux Falls, SD 571041184743148
  10. Mark Huber, M.D.Sioux Falls, SD 571051750357299
  11. Waqas Jehangir, MD, MBBSSioux Falls, SD 571051659752541
  12. Michael Keppen, M.D.Sioux Falls, SD 571041881690592
  13. James Kuzman, M.D., PH.D.Rapid City, SD 577011275760860
  14. Miroslaw Mazurczak, M.D.Sioux Falls, SD 571041437155140
  15. Kelly McCaul, M.D.Sioux Falls, SD 571051295701522
  16. Michael McHale, MDSioux Falls, SD 571051124017256
  17. Heidi McKean, MDSioux Falls, SD 571051992714281
  18. Si-Yuen Moy, M.D.Siuox Falls, SD 571171649465162
  19. Robert Nelimark, M.D.Sioux Falls, SD 571041669478376
  20. Houman Nourkeyhani, M.D.Sioux Falls, SD 571051184935652
  21. Vinod Parameswaran, M.D.Sioux Falls, SD 571051013983352
  22. Steven Powell, M.D.Sioux Falls, SD 571041548454291
  23. Gabriel Roman Souza, MDSioux Falls, SD 571051982220331
  24. Amy Sanford, M.D.Sioux Falls, SD 571041679708283
  25. Travis Snyders, M.D.Sioux Falls, SD 571041588013643
  26. Benjamin Solomon, MDSioux Falls, SD 571051912107368
  27. Christopher Sumey, M.D.Sioux Falls, SD 571041588836548
  28. Loren Tschetter, M.D.Sioux Falls, SD 571041871590414
  29. Ryan Vaca, M.D.Sioux Falls, SD 571051700222148
  30. Mary Lee Villanueva, MDYankton, SD 570781699857821
  31. Allison WatsonSioux Falls, SD 571041750709739

Source: CMS NPPES, primary taxonomy 207RH0003X: records by practice city and the list of records, file of Aug 9, 2026.

South Dakota ranks 36 of 51 per resident

  1. Hawaii3.4
  2. Vermont3.4
  3. Michigan3.4
  4. South Dakota3.4
  5. South Carolina3.4
  6. Kentucky3.4
  7. 50 states and D.C.4.2

Source: CMS NPPES, primary taxonomy 207RH0003X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

87.1% of these records appear in a Medicare file, against 82.9% 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 Dakota87.1%
  2. United States82.9%

Hematology & Oncology Physician records in South Dakota, measured

  • In a Medicare file27 of 31 · 87.1% here, 82.9% nationally
  • In the CMS Doctors and Clinicians file21 · 67.7% here, 71.3% nationally
  • Not updated in five years or more22 · 71.0% here, 54.3% nationally
  • Median graduation year2007 · the 21 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RH0003X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

31 NPPES records list hematology & oncology physician (207RH0003X) as their primary taxonomy with a practice address in South Dakota: 3.4 per 100,000 residents against 4.2 nationally (50 states and D.C.). Sioux Falls has 22 of them (71%).

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. Delaware31
  2. Idaho38
  3. North Dakota39
  4. Vermont22

States with a similar rate per 100,000

  1. South Carolina3.4
  2. Kentucky3.4
  3. Arkansas3.4
  4. Michigan3.4

The largest states

  1. California1,583
  2. New York1,163
  3. Texas922
  4. Florida818
  5. Pennsylvania784

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.