Colonoscopy (diagnostic) · South Dakota
Colonoscopy (diagnostic) in South Dakota: the highest-volume physicians
25 physicians in South Dakota billed Medicare for 728 colonoscopy (diagnostic) procedures in 2024. The top 25, with the year before beside it.
Top 25
| Rank | Physician | 2024 | 2023 | Change |
|---|---|---|---|---|
| 1 | Christopher M. LarsonGeneral Surgery · Aberdeen | 154 | 116 | +33% |
| 2 | David Ring, MDGeneral Surgery · Aberdeen | 98 | 85 | +15% |
| 3 | Jeffrey P. Michalak, DOGastroenterology · Dakota Dunes | 48 | 43 | +12% |
| 4 | Roger W. Werth, MDGeneral Surgery · Aberdeen | 38 | 105 | −64% |
| 5 | Robert T. Lapp, MDGastroenterology · Sioux Falls | 30 | — | |
| 6 | Blake A. Jones, MDGastroenterology · Rapid City | 29 | 18 | |
| 7 | Philip E. Tanner, MDGastroenterology · Sioux Falls | 24 | 20 | +20% |
| 7 | Christopher M. Hurley, MDGastroenterology · Sioux Falls | 24 | 27 | −11% |
| 9 | Oksana Aleksenko, MDGastroenterology · Rapid City | 23 | 26 | −12% |
| 9 | Gregory M. Gerrish, MDGeneral Surgery · Watertown | 23 | 15 | |
| 11 | Sarah Bligh, MDGastroenterology · Dakota Dunes | 20 | 20 | +0% |
| 11 | Backer M. Abdu, MDGastroenterology · Sioux Falls | 20 | — | |
| 13 | Cristina A. Hill Jensen, MDGastroenterology · Sioux Falls | 19 | 25 | −24% |
| 14 | Luke C. Serck, MDVascular Surgery · Yankton | 18 | 13 | |
| 14 | Jacob S. Schaeffer, MDGeneral Surgery · Watertown | 18 | 15 | |
| 16 | Rick J. Wagner, MDGeneral Surgery · Winner | 17 | 17 | |
| 17 | Nathan T. Jaqua, MDGastroenterology · Rapid City | 16 | 14 | |
| 17 | Ryan J. Garry, MDGeneral Surgery · Yankton | 16 | 15 | |
| 19 | Jorge A. Gilbert, MDGastroenterology · Sioux Falls | 15 | 14 | |
| 19 | Steve Gutnik, MDGastroenterology · Yankton | 15 | 32 | −53% |
| 19 | Brandt E. Becker, MDGeneral Surgery · Pierre | 15 | 20 | −25% |
| 22 | Alan R. Christensen, MDGeneral Surgery · Watertown | 12 | — | |
| 22 | Alexander M. Sarkisian, MDGastroenterology · Dakota Dunes | 12 | — | |
| 22 | Jesse Guardado, MDColorectal Surgery (Proctology) · Sioux Falls | 12 | 20 | −40% |
| 22 | Issam Turk, MDGastroenterology · Rapid City | 12 | 14 |
A rank counts procedures billed under the physician's own NPI (CPT 45378), in 2024, Medicare fee-for-service only. A surgeon who mostly treats younger or Medicare Advantage patients will rank lower than their total volume. Method and limits.