NPPES file of Aug 9, 2026

Rheumatology Physician in South Dakota

17 NPPES records list rheumatology physician with a practice address in South Dakota, 1.8 per 100,000 residents, the 34th 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 207RR0500X · 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 City3
  3. Dakota Dunes1
  4. Yankton1

Rheumatology Physician records in South Dakota

  1. Wais Afzal, M.D.Sioux Falls, SD 571051710377544
  2. Baker Alkhairi, M.B.B.CH.Sioux Falls, SD 571051720519093
  3. Ricardo Alvillar, M.D.Rapid City, SD 577011386694255
  4. Leann Bassing, M.D.Yankton, SD 570781871784124
  5. Eduardo Bonilla Trejos, M.D.Sioux Falls, SD 571051972709004
  6. Brian Bowers, DORapid City, SD 577011891877098
  7. Kelly Delaney-Nelson, M.D.Dakota Dunes, SD 570491356752067
  8. Joseph Fanciullo, MDSioux Falls, SD 571081437182516
  9. Christine Halligan, MDSioux Falls, SD 571081871526962
  10. Milad Heydari-Kamjani, DORapid City, SD 577011861169054
  11. Kelsey Holkesvik, MDSioux Falls, SD 571081962899088
  12. Vivek Joseph, MDSioux Falls, SD 571051669888566
  13. Jenna King-Sona, DOSioux Falls, SD 571081679864375
  14. Gregory Mumm, M.D.Sioux Falls, SD 571081548228810
  15. Kara Petersen, M.D.Sioux Falls, SD 571081851328231
  16. Jessica Srstka, MDSioux Falls, SD 571081700229424
  17. Mark Vercel, D.O.Sioux Falls, SD 571081386902450

Source: CMS NPPES, primary taxonomy 207RR0500X: records by practice city and the list of records, file of Aug 9, 2026.

South Dakota ranks 34 of 51 per resident

  1. Alabama1.9
  2. Maine1.9
  3. Indiana1.9
  4. South Dakota1.8
  5. Delaware1.8
  6. Kansas1.8
  7. 50 states and D.C.2.4

Source: CMS NPPES, primary taxonomy 207RR0500X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

76.5% of these records appear in a Medicare file, against 81.6% 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 Dakota76.5%
  2. United States81.6%

Rheumatology Physician records in South Dakota, measured

  • In a Medicare file13 of 17 · 76.5% here, 81.6% nationally
  • In the CMS Doctors and Clinicians file12 · 70.6% here, 69.5% nationally
  • Not updated in five years or more12 · 70.6% here, 56.6% nationally
  • Median graduation year2011 · the 12 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RR0500X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

17 NPPES records list rheumatology physician (207RR0500X) as their primary taxonomy with a practice address in South Dakota: 1.8 per 100,000 residents against 2.4 nationally (50 states and D.C.). Sioux Falls has 12 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. Vermont18
  2. Delaware19
  3. Montana20
  4. North Dakota11

States with a similar rate per 100,000

  1. Indiana1.9
  2. Kansas1.8
  3. Maine1.9
  4. Alabama1.9

The largest states

  1. California926
  2. New York599
  3. Texas545
  4. Florida494
  5. Pennsylvania413

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.