Louie Kostopoulos, MD
Interventional Cardiology · Milwaukee, WINPI 1356431001
Payments from drug & device makers
What this record shows
The money is spread across several categories — travel and lodging (56.5%), food and beverage and gifts — rather than concentrated in one kind of arrangement. 15 manufacturers reported payments, led by Medtronic at 51.8% of the total. 2025 is the largest year on record at $10,460, 2.8 times the $3,714 reported in 2019.
Across 171 payments — averaging $150.26 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$13K
- Abiomed$5K
- Penumbra, Inc.$2K
- Abbott$2K
- Boston Scientific$2K
- W. L. Gore & Associates, Inc.$562
- plus $1K from 9 others
Across 7 payments — averaging $3988.25 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.
- Magenta Medical Inc$17K
- EKOS Corporation$7K
- Boston Scientific$4K
- Abiomed$40
What the payments were for
- Travel & lodging$14,52457%
- Food & beverage$11,05843%
- Gifts$1120%
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 |
|---|---|---|
| Medtronic(2 entities) | 55 | $13,316 |
| Abiomed | 61 | $5,100 |
| Penumbra, Inc. | 8 | $2,068 |
| Abbott | 13 | $1,663 |
| Boston Scientific | 16 | $1,513 |
| W. L. Gore & Associates, Inc. | 4 | $562 |
| Shockwave Medical, Inc | 4 | $518 |
| ZOLL Circulation Inc | 1 | $149 |
| Inari Medical, Inc. | 2 | $147 |
| Bard Peripheral Vascular, Inc. | 2 | $139 |
| Cardiovascular Systems Inc. | 1 | $133 |
| Asahi Intecc USA, Inc. | 1 | $131 |
| Avinger Inc. | 1 | $95 |
| Corindus Inc. | 1 | $87 |
| Philips North America LLC | 1 | $74 |
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.
- ENDURANT IIS$8,902
- Impella$3,325
- Resolute$2,123
- Indigo System$1,927
- OPTIS$599
- Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter$425
- CoreValve Evolut$331
- EXCLUDER Conformable AAA Endoprosthesis with Active Control$330
- Rotablator Rotational Atherectomy System Console Kit$281
- GENERAL ATHERECTOMY$252
- COREVALVE EVOLUT R$222
- VersaCross Access Solution$192
- XIENCE SIERRA$190
- ONYX FRONTIER$165
- Dragonfly OCT$162
- COROFLOW$150
- TherOx DS2 Console$149
- Catheter$149
- Downstream Cartridge$149
- VIABAHN VBX Balloon Expandable Endoprosthesis$138
How this compares
$25,694 in reported general payments places this provider in the 85th percentile of 118 interventional cardiology 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 |
|---|---|---|
| VyndamaxTafamidis | 20 | $833,129 |
| EliquisApixaban | 470 | $444,130 |
| EntrestoSacubitril/Valsartan | 222 | $221,070 |
| Repatha SureclickEvolocumab | 153 | $139,427 |
| XareltoRivaroxaban | 96 | $120,771 |
| BrilintaTicagrelor | 82 | $60,214 |
| JardianceEmpagliflozin | 43 | $54,028 |
| Praluent PenAlirocumab | 59 | $29,982 |
| VascepaIcosapent Ethyl | 38 | $16,707 |
| Metoprolol Succinate | 642 | $7,428 |
| Atorvastatin Calcium | 732 | $6,331 |
| ClopidogrelClopidogrel Bisulfate | 487 | $4,970 |
| Potassium Chloride | 129 | $3,165 |
| Midodrine Hcl | 30 | $2,993 |
| Prasugrel Hcl | 43 | $2,942 |
Paid to pharmacies, not to this prescriber.
Other interventional cardiology in Milwaukee
- Michael SalingerMilwaukee$216K
- Tanvir BajwaMilwaukee$106K
- Suhail AllaqabandMilwaukee$88K
- Saif AnwaruddinMilwaukee$80K
- Iyad AzzamMilwaukee$60K
- Montoya TaylorMilwaukee$48K
- Mina IskanderMilwaukee$41K
- Anna LarosaMilwaukee$38K
- Daniel JohnsrudMilwaukee$25K
- Sasanka JayasuriyaMilwaukee$15K
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.