Matthew Cooper, MD
Transplant Surgery · Milwaukee, WINPI 1740204965
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $61,293 of the $98,389 with a category attached, or 62.3%. Sanofi-aventis U.S. LLC accounts for 66.7% of it on its own, with 9 other manufacturers making up the rest. 2025 is the largest year on record at $55,126, more than ten times the $5,255 reported in 2019. Among transplant surgery 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 51 payments — averaging $1929.20 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Sanofi-aventis U.S. LLC$66K
- Veloxis Pharmaceuticals, Inc.$10K
- Biogen$8K
- Sanofi$5K
- Apellis Pharmaceuticals, Inc.$4K
- Merck$3K
- plus $3K from 4 others
Across 11 payments — averaging $5081.88 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.
- Qiagen, LLC$29K
- Novartis$14K
- Astellas Pharma Global Development$13K
What the payments were for
- Consulting fees$29,13230%
- Speaking & faculty fees$61,29362%
- Travel & lodging$7,1647%
- Food & beverage$8001%
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 |
|---|---|---|
| Sanofi-aventis U.S. LLC | 28 | $65,656 |
| Veloxis Pharmaceuticals, Inc. | 3 | $9,814 |
| Biogen | 1 | $7,930 |
| Sanofi | 1 | $4,802 |
| Apellis Pharmaceuticals, Inc. | 1 | $4,495 |
| Merck | 6 | $2,715 |
| National Marrow Donor Program | 8 | $2,400 |
| Saol Therapeutics Inc. | 1 | $303 |
| AstraZeneca | 1 | $150 |
| AbbVie | 1 | $124 |
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.
- THYMOGLOBULIN$55,663
- Envarsus$9,814
- TZIELD$8,912
- NO PRODUCT DISCUSSED$4,802
- LEMTRADA$351
- SOLIRIS$150
- Venclexta$124
How this compares
$98,389 in reported general payments places this provider in the 95th percentile of 32 transplant surgery 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.
Other transplant surgery in Milwaukee
- Kondragunta PrasadMilwaukee$9K
- Gaurav JainMilwaukee$8K
- Ty DunnMilwaukee$4K
- Michael ZimmermanMilwaukee$2K
- Emre ArpaliMilwaukee$2K
- Narendra BattulaMilwaukee$1K
- Hoonbae JeonMilwaukee$884
- Badi RawashdenMilwaukee$369
- Tyler BurnettMilwaukee$251
- Daniel O'BrienMilwaukee$157
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.