Jason Prosek, MD
Nephrology · Columbus, OHNPI 1548451313
Payments from drug & device makers
Across 32 payments — averaging $284.94 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Nxstage Medical, Inc.$9K
- Otsuka America Pharmaceutical, Inc.$151
- Bayer$103
- Aurinia Pharma U.S., Inc.$66
- GSK$29
- Travere Therapeutics, Inc.$26
- plus $16 from 1 others
What the payments were for
- Speaking & faculty fees$6,10067%
- Travel & lodging$2,23324%
- Food & beverage$7598%
- Education$260%
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 |
|---|---|---|
| Nxstage Medical, Inc. | 15 | $8,726 |
| Otsuka America Pharmaceutical, Inc. | 3 | $151 |
| Bayer | 5 | $103 |
| Aurinia Pharma U.S., Inc. | 2 | $66 |
| GSK | 1 | $29 |
| Travere Therapeutics, Inc. | 5 | $26 |
| Amgen | 1 | $16 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
- NXSTAGE SYSTEM ONE$8,333
How this compares
$9,118 in reported general payments places this provider in the 80th percentile of 450 nephrology providers in Ohio.
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 |
|---|---|---|
| JardianceEmpagliflozin | 40 | $47,170 |
| VeltassaPatiromer Calcium Sorbitex | 16 | $15,584 |
| LokelmaSodium Zirconium Cyclosilicate | 12 | $6,388 |
| Nifedipine ErNifedipine | 27 | $1,060 |
| Calcitriol | 52 | $732 |
| Chlorthalidone | 30 | $431 |
| Amlodipine Besylate | 74 | $414 |
| Olmesartan Medoxomil | 20 | $413 |
| Torsemide | 20 | $263 |
| Lisinopril | 52 | $252 |
| Spironolactone | 62 | $238 |
| Losartan Potassium | 45 | $220 |
| Furosemide | 29 | $188 |
| Potassium Chloride | 15 | $172 |
| Tamsulosin Hcl | 18 | $154 |
Paid to pharmacies, not to this prescriber.
Other nephrology in Columbus
- Isabelle AyoubColumbus$1.6M
- Samir ParikhColumbus$699K
- Brad RovinColumbus$625K
- Kevin SchroederColumbus$518K
- Salem AlmaaniColumbus$390K
- Alejandro DiezColumbus$280K
- Sethu MadhavanColumbus$272K
- Todd PesaventoColumbus$214K
- Anil AgarwalColumbus$143K
- Uday NoriColumbus$139K
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.