Kenneth Madsen, MD
Vascular Surgery · Boise, IDNPI 1164412862
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $7,863 of the $10,930 with a category attached, or 71.9%. It is spread thinly across 36 manufacturers, the largest accounting for just 22.9%. Reporting peaked in 2024 at $4,201 and has fallen 51.9% since, to $2,023 in 2025. Among vascular surgery clinicians in ID 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 139 payments — averaging $78.63 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- W. L. Gore & Associates, Inc.$3K
- Medtronic$2K
- Silk Road Medical, Inc.$2K
- Boston Scientific$1K
- Globus Medical$794
- Shockwave Medical, Inc$532
- plus $3K from 30 others
What the payments were for
- Travel & lodging$3,06628%
- Food & beverage$7,86372%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| W. L. Gore & Associates, Inc. | 19 | $2,502 |
| Medtronic(2 entities) | 21 | $1,882 |
| Silk Road Medical, Inc. | 9 | $1,622 |
| Boston Scientific | 17 | $1,071 |
| Globus Medical | 4 | $794 |
| Shockwave Medical, Inc | 6 | $532 |
| Inari Medical, Inc. | 3 | $360 |
| Stryker | 4 | $347 |
| Paratek Pharmaceuticals, Inc. | 7 | $243 |
| Cook Medical LLC | 5 | $213 |
| Penumbra, Inc. | 3 | $193 |
| Johnson & Johnson | 7 | $181 |
| Cagent Vascular Inc | 1 | $134 |
| Organogenesis Inc. | 1 | $111 |
| Abbott | 1 | $95 |
| Endologix LLC | 1 | $66 |
| Tactile Systems Technology Inc | 4 | $64 |
| Cardiovascular Systems Inc. | 2 | $61 |
| Angiodynamics, Inc. | 2 | $59 |
| Smith+Nephew | 3 | $57 |
| Siemens Medical Solutions USA, Inc. | 1 | $55 |
| Getinge USA Sales, LLC | 3 | $45 |
| KCI USA, Inc. | 1 | $31 |
| Bard Peripheral Vascular, Inc. | 2 | $30 |
| Reflow Medical Inc | 1 | $26 |
| Integra Lifesciences Corporation | 1 | $21 |
| Atricure, Inc. | 1 | $21 |
| Baxter Healthcare | 1 | $19 |
| Mozarc Medical US LLC | 1 | $18 |
| Philips North America LLC | 1 | $14 |
| Pfizer | 1 | $12 |
| Terumo Medical Corporation | 1 | $11 |
| Lemaitre Vascular, Inc. | 1 | $11 |
| E.r. Squibb & Sons, L.L.C. | 1 | $11 |
| Polarityte, Inc. | 1 | $10 |
| Elutia, Inc. | 1 | $9 |
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.
- ENROUTE Transcarotid Neuroprotection System$3,033
- ENROUTE Enflate Transcarotid RX Balloon Dilatation Catheter$1,516
- ENROUTE Transcarotid Stent$1,516
- GORE TAG Conformable Thoracic Endoprosthesis$826
- MONUMENT$599
- GORE TAG Conformable Thoracic Stent Graft$509
- Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter$501
- ELLIPSYS VASCULAR ACCESS SYSTEM$493
- FLOWTRIEVER CATHETER, S$491
- HawkOne$487
- VenaSeal$334
- GENERAL ATHERECTOMY$255
- MAGNIFY SA$159
- GORE TAG Thoracic Endoprosthesis$157
- Zenith$151
- Serrantor$134
- GORE EXCLUDER Thoracoabdominal Branch Endoprosthesis$133
- CLOTTRIEVER BOLD CATHETER$129
- NUZYRA$121
- Penumbra System$118
How this compares
$10,930 in reported general payments places this provider in the 90th percentile of 28 vascular surgery providers in Idaho.
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 |
|---|---|---|
| EliquisApixaban | 12 | $10,994 |
| ClopidogrelClopidogrel Bisulfate | 102 | $543 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 26 | $180 |
| Atorvastatin Calcium | 28 | $90 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| PfizerEliquis | $12 | $10,99412 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 90th percentile of 28 vascular surgery providers in Idaho.
Other vascular surgery in Boise
- Louis ZhangBoise$7K
- Alexis GrahamBoise$6K
- Vikram PalkarBoise$6K
- Connie ZastrowBoise$5K
- Christine EdenBoise$3K
- Murtuza HabeebBoise$2K
- Graham DonaldBoise$2K
- Brian MattesonBoise$2K
- Christian Hamlat IiBoise$1K
- Jeffrey GilbertsonBoise$685
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.