Sethu Madhavan, MD
Nephrology · Columbus, OHNPI 1003015850
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 99.1% of the total across 3 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. Vertex accounts for 99.1% of it on its own, with 1 other manufacturer making up the rest. Reporting peaked in 2023 at $108 and has fallen 98.5% since, to $2 in 2025. That places this record below the midpoint for nephrology clinicians in OH, where the typical reported total is $965.
Across 3 payments — averaging $61.11 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Vertex$182
- Travere Therapeutics, Inc.$2
Across 6 payments — averaging $45,279 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Vertex$272K
What the payments were for
- Food & beverage$18299%
- Education$21%
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 |
|---|---|---|
| Vertex | 2 | $182 |
| Travere Therapeutics, Inc. | 1 | $2 |
How this compares
$183 in reported general payments places this provider in the 15th 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 |
|---|---|---|
| Nifedipine ErNifedipine | 51 | $1,047 |
| Lisinopril | 78 | $448 |
| Spironolactone | 37 | $380 |
| Tamsulosin Hcl | 21 | $275 |
| Carvedilol | 27 | $170 |
| Hydralazine Hcl | 20 | $163 |
| Losartan Potassium | 13 | $50 |
| Amiloride Hcl | 12 | $41 |
| Furosemide | 25 | $20 |
| Omeprazole | 12 | $5 |
Paid to pharmacies, not to this prescriber.
Other nephrology in Columbus
- Brad RovinColumbus$379K
- Samir ParikhColumbus$145K
- Isabelle AyoubColumbus$116K
- Anil AgarwalColumbus$99K
- Karim AttiaColumbus$43K
- Rima KangColumbus$28K
- Salem AlmaaniColumbus$21K
- Todd PesaventoColumbus$20K
- Naveen SingriColumbus$11K
- Jessica GrecoColumbus$11K
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.