Warren Kemper, MD
Internal Medicine · Louisville, KYNPI 1770595035
Payments from drug & device makers
Across 829 payments — averaging $15.94 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$2K
- Amgen$1K
- Novo Nordisk$1K
- Pfizer$1K
- Boehringer Ingelheim$993
- Amarin Pharma, Inc.$599
- plus $6K from 26 others
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 |
|---|---|---|
| AstraZeneca(2 entities) | 83 | $2,073 |
| Amgen(2 entities) | 107 | $1,486 |
| Novo Nordisk | 96 | $1,408 |
| Pfizer | 78 | $1,132 |
| Boehringer Ingelheim | 71 | $993 |
| Amarin Pharma, Inc. | 41 | $599 |
| Sanofi-aventis U.S. LLC | 37 | $595 |
| Novartis | 32 | $567 |
| Lilly USA, LLC | 40 | $530 |
| GSK | 37 | $516 |
| Johnson & Johnson | 37 | $487 |
| AbbVie(2 entities) | 24 | $454 |
| Biohaven Pharmaceutical Holding Company Ltd. | 23 | $428 |
| Esperion Therapeutics, Inc. | 26 | $379 |
| Merck | 15 | $231 |
| Kowa Pharmaceuticals America, Inc. | 16 | $227 |
| Biohaven Pharmaceuticals, Inc. | 13 | $218 |
| Exact Sciences | 8 | $156 |
| Astellas Pharma US Inc | 7 | $108 |
| Phathom Pharmaceuticals, Inc. | 5 | $106 |
| Bayer | 6 | $97 |
| E.r. Squibb & Sons, L.L.C. | 5 | $79 |
| Takeda Pharmaceuticals U.S.A., Inc. | 4 | $69 |
| Sanofi Pasteur Inc. | 4 | $52 |
| Abbott | 3 | $46 |
| Axsome Therapeutics, Inc. | 2 | $42 |
| Mylan Specialty L.p. | 2 | $30 |
| Shire North American Group Inc | 2 | $25 |
| Si-bone, Inc. | 1 | $23 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 1 | $22 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 2 | $17 |
| Philips North America LLC | 1 | $17 |
How this compares
$13,213 in reported general payments places this provider in the 95th percentile of 1,284 internal medicine providers in Kentucky.
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.
Other internal medicine in Louisville
- Jason ChesneyLouisville$6.3M
- Robert SasserLouisville$62K
- Kelley McIntyreLouisville$48K
- Lal TanwaniLouisville$38K
- Mark WilliamsLouisville$33K
- Scott YoungLouisville$24K
- Frank SimonLouisville$22K
- Walter BruningLouisville$22K
- Brian ParadowskiLouisville$20K
- Suresh NairLouisville$20K
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.