William Marx, MD
Vascular & Interventional Radiology · Asheville, NCNPI 1598780884
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $1,581 of the $2,117 with a category attached, or 74.7%. 9 manufacturers reported payments, led by Microvention, Inc. at 34.2% of the total. Reporting peaked in 2019 at $1,003 and has fallen 84.3% since, to $158 in 2025.
Across 49 payments — averaging $43.20 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Microvention, Inc.$724
- Medtronic$644
- Imperative Care, Inc$231
- Route 92 Medical, Inc.$158
- Penumbra, Inc.$146
- Johnson & Johnson$110
- plus $104 from 3 others
What the payments were for
- Travel & lodging$53625%
- Food & beverage$1,58175%
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 |
|---|---|---|
| Microvention, Inc. | 6 | $724 |
| Medtronic(2 entities) | 29 | $644 |
| Imperative Care, Inc | 6 | $231 |
| Route 92 Medical, Inc. | 1 | $158 |
| Penumbra, Inc. | 1 | $146 |
| Johnson & Johnson | 1 | $110 |
| Cardiva Medical, Inc. | 2 | $57 |
| Genentech USA, Inc. | 2 | $26 |
| Terumo Medical Corporation | 1 | $21 |
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.
- WEB$501
- OSTEOCOOL RF ABLATION$157
- RED 72$146
- Embotrap$110
How this compares
$2,117 in reported general payments places this provider in the 55th percentile of 106 vascular & interventional radiology providers in North Carolina.
See all vascular & interventional radiology providers in North Carolina →
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 vascular & interventional radiology in Asheville
- Gloria SalazarChapel Hill$364K
- Brian KouriWinston Salem$342K
- Ari IsaacsonChapel Hill$290K
- Nicole KeefeChapel Hill$92K
- William PechterCary$73K
- Stephen LoehrCary$72K
- Jeremy KimCharlotte$60K
- Charles KimDurham$50K
- Maureen KohiChapel Hill$28K
- Dylan SuttleGreensboro$23K
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.