Anthony Rupp, MD
Nephrology · Sioux Falls, SDNPI 1154524288
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 24 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 14 manufacturers, the largest accounting for just 13.0% — the pattern of someone who eats at a lot of different presentations. 2025 is the largest year on record at $356, 5.3 times the $67 reported in 2019.
Across 24 payments — averaging $20.66 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Otsuka America Pharmaceutical, Inc.$64
- Travere Therapeutics, Inc.$58
- Calliditas Therapeutics US Inc.$55
- Novartis$43
- Ardelyx, Inc.$37
- Fresenius USA Marketing, Inc.$36
- plus $202 from 8 others
What the payments were for
- Food & beverage$496100%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | 3 | $64 |
| Travere Therapeutics, Inc. | 4 | $58 |
| Calliditas Therapeutics US Inc. | 2 | $55 |
| Novartis | 2 | $43 |
| Ardelyx, Inc. | 2 | $37 |
| Fresenius USA Marketing, Inc. | 2 | $36 |
| Scpharmaceuticals Inc. | 1 | $35 |
| Amgen(2 entities) | 2 | $34 |
| Bayer | 1 | $30 |
| Akebia Therapeutics Inc | 1 | $30 |
| Vantive US Healthcare LLC | 1 | $23 |
| Baxter Healthcare | 1 | $20 |
| Novo Nordisk | 1 | $16 |
| Boehringer Ingelheim | 1 | $14 |
How this compares
$496 in reported general payments places this provider in the 70th percentile of 26 nephrology providers in South Dakota.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Calcitriol | 562 | $8,686 |
| Potassium Chloride | 78 | $2,992 |
| Sevelamer Carbonate | 20 | $2,907 |
| Bumetanide | 15 | $1,866 |
| Losartan Potassium | 262 | $1,842 |
| Amlodipine Besylate | 180 | $1,267 |
| Lisinopril | 178 | $1,163 |
| Allopurinol | 108 | $1,112 |
| Hydralazine Hcl | 80 | $1,044 |
| Furosemide | 154 | $924 |
| Metoprolol Succinate | 27 | $695 |
| Cinacalcet Hcl | 12 | $590 |
| Klor-Con M10Potassium Chloride | 11 | $516 |
| Calcium Acetate | 14 | $415 |
| Clonidine Hcl | 31 | $382 |
Paid to pharmacies, not to this prescriber.
Other nephrology in Sioux Falls
- Christina LankhorstSioux Falls$1K
- Ismail OmranSioux Falls$1K
- Arvin SantosSioux Falls$868
- Erin GreerSioux Falls$748
- Mohammad QamarSioux Falls$574
- Dana BrandysSioux Falls$457
- David KovaleskiSioux Falls$247
- Jeremy AworiSioux Falls$203
- Tina MelansonSioux Falls$158
- Lu HuberSioux Falls$133
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.