Sameer Gupta, MD
Nephrology · Fond du Lac, WINPI 1669638508
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $17,610 of the $19,540 with a category attached, or 90.1%. Daiichi Sankyo Inc. accounts for 98.5% of it on its own, with 7 other manufacturers making up the rest. Reporting peaked in 2022 at $16,119 and has fallen 89.7% since, to $1,656 in 2025. Among nephrology clinicians in WI with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 37 payments — averaging $528.12 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Daiichi Sankyo Inc.$19K
- Abbott$120
- Pharmacyclics LLC, An Abbvie Company$73
- Johnson & Johnson$32
- Beigene USA, Inc.$22
- Nxstage Medical, Inc.$21
- plus $28 from 2 others
What the payments were for
- Consulting fees$17,61090%
- Travel & lodging$1,2156%
- Food & beverage$7164%
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 |
|---|---|---|
| Daiichi Sankyo Inc. | 28 | $19,245 |
| Abbott | 1 | $120 |
| Pharmacyclics LLC, An Abbvie Company | 3 | $73 |
| Johnson & Johnson | 1 | $32 |
| Beigene USA, Inc. | 1 | $22 |
| Nxstage Medical, Inc. | 1 | $21 |
| Beone Medicines USA, Inc. | 1 | $16 |
| Alnylam Pharmaceuticals Inc. | 1 | $12 |
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.
How this compares
$19,540 in reported general payments places this provider in the 95th percentile of 173 nephrology providers in Wisconsin.
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 | 176 | $158,137 |
| Potassium Citrate ErPotassium Citrate | 111 | $13,193 |
| SpsSodium Polystyrene Sulfon/Sorb | 24 | $12,461 |
| Nifedipine ErNifedipine | 148 | $4,724 |
| Doxazosin Mesylate | 102 | $2,943 |
| Potassium Chloride | 106 | $2,928 |
| Allopurinol | 225 | $2,405 |
| Losartan Potassium | 212 | $2,211 |
| Calcium Acetate | 13 | $1,815 |
| Lisinopril | 194 | $1,621 |
| Chlorthalidone | 63 | $1,490 |
| Metoprolol Succinate | 76 | $1,314 |
| Amlodipine Besylate | 133 | $1,296 |
| Carvedilol | 76 | $934 |
| Furosemide | 98 | $609 |
Paid to pharmacies, not to this prescriber.
Other nephrology in Fond du Lac
- Kevin RegnerMilwaukee$246K
- Rosanna RanieriKenosha$84K
- Micah ChanFitchburg$80K
- Rishi KoraGlendale$57K
- Manohar AhujaMilwaukee$35K
- Ashraf El MeanawyMilwaukee$30K
- Anna GaddyMilwaukee$28K
- Paul HannaMilwaukee$18K
- Fahad AzizFitchburg$17K
- Ali GardeziFitchburg$16K
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.