Ramesh Khanna, MD
Nephrology · Columbia, MONPI 1457300287
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $10,479 of the $13,817 with a category attached, or 75.8%. Baxter Healthcare accounts for 90.7% of it on its own, with 17 other manufacturers making up the rest. Reporting peaked in 2023 at $10,864 and has fallen 97.2% since, to $302 in 2025. Among nephrology clinicians in MO with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 73 payments — averaging $189.28 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Baxter Healthcare$13K
- Travere Therapeutics, Inc.$326
- Amgen$212
- Otsuka America Pharmaceutical, Inc.$160
- Vifor Pharma, Inc.$87
- Calliditas Therapeutics US Inc.$82
- plus $412 from 12 others
What the payments were for
- Consulting fees$10,47976%
- Travel & lodging$1,82713%
- Food & beverage$1,51011%
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 |
|---|---|---|
| Baxter Healthcare | 9 | $12,539 |
| Travere Therapeutics, Inc. | 18 | $326 |
| Amgen(2 entities) | 8 | $212 |
| Otsuka America Pharmaceutical, Inc. | 9 | $160 |
| Vifor Pharma, Inc. | 5 | $87 |
| Calliditas Therapeutics US Inc. | 3 | $82 |
| Novartis | 3 | $81 |
| AstraZeneca | 4 | $59 |
| Akebia Therapeutics Inc | 4 | $56 |
| Sanofi | 2 | $45 |
| Merck | 1 | $31 |
| Mozarc Medical US LLC | 1 | $23 |
| Biobeat USA Inc. | 1 | $22 |
| Bayer | 1 | $21 |
| Vantive US Healthcare LLC | 1 | $21 |
| GSK | 1 | $21 |
| Mallinckrodt Hospital Products Inc. | 1 | $16 |
| Rockwell Medical, Inc. | 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.
- Renal - PD$12,432
How this compares
$13,817 in reported general payments places this provider in the 90th percentile of 253 nephrology providers in Missouri.
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 | 58 | $46,979 |
| ProsolParenteral Amino Acid 20% No.1 | 54 | $8,141 |
| Sevelamer Carbonate | 42 | $8,138 |
| Clonidine | 53 | $7,251 |
| Cinacalcet Hcl | 15 | $2,672 |
| Ondansetron Hcl | 13 | $1,561 |
| Nifedipine ErNifedipine | 41 | $1,127 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 13 | $816 |
| Potassium Chloride | 30 | $787 |
| Levetiracetam | 16 | $634 |
| Calcitriol | 54 | $594 |
| Metoprolol Succinate | 61 | $555 |
| Allopurinol | 61 | $425 |
| Hydralazine Hcl | 53 | $370 |
| Losartan Potassium | 33 | $346 |
Paid to pharmacies, not to this prescriber.
Other nephrology in Columbia
- Zbylut TwardowskiColumbia$43K
- Kunal ChaudharyColumbia$36K
- Preethi YerramColumbia$35K
- John VanstoneColumbia$28K
- Derek LarsonCreve Coeur$605K
- Marcos RothsteinSaint Louis$350K
- Anuja JavaSaint Louis$240K
- Kevin MartinSt Louis$189K
- Alejandro AlvarezFlorissant$176K
- Gary SingerSaint Peters$170K
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.