William Oppat, MD
Vascular Surgery · Novi, MINPI 1902873086
Payments from drug & device makers
What this record shows
It is spread thinly across 26 manufacturers, the largest accounting for just 22.4%.
Across 85 payments — averaging $98.77 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Globus Medical$2K
- Endologix LLC$2K
- W. L. Gore & Associates, Inc.$2K
- Inari Medical, Inc.$1K
- Medtronic$918
- Abbott$143
- plus $797 from 20 others
What the payments were for
- Travel & lodging$4,14649%
- Food & beverage$4,24951%
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 |
|---|---|---|
| Globus Medical | 9 | $1,882 |
| Endologix LLC | 18 | $1,764 |
| W. L. Gore & Associates, Inc. | 18 | $1,694 |
| Inari Medical, Inc. | 5 | $1,197 |
| Medtronic | 5 | $918 |
| Abbott | 3 | $143 |
| Bard Peripheral Vascular, Inc. | 1 | $98 |
| Angiodynamics, Inc. | 1 | $91 |
| Stryker | 1 | $80 |
| Lemaitre Vascular, Inc. | 1 | $78 |
| Boston Scientific | 3 | $54 |
| Conmed Corporation | 1 | $49 |
| Cook Medical LLC | 3 | $40 |
| Penumbra, Inc. | 3 | $40 |
| Cordis US CORP. | 2 | $39 |
| Intuitive Surgical | 1 | $37 |
| Getinge USA Sales, LLC | 1 | $28 |
| Veryan Medical Incorporated | 1 | $26 |
| Convatec Inc. | 1 | $25 |
| My01 Inc. | 1 | $25 |
| Silk Road Medical, Inc. | 1 | $22 |
| Acera Surgical, Inc. | 1 | $22 |
| Cashflow Solutions, LLC | 1 | $14 |
| Johnson & Johnson | 1 | $12 |
| Artivion, Inc. | 1 | $9 |
| Bolton Medical Inc | 1 | $7 |
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.
- ALIF$1,680
- XLIF$1,680
- FLOWTRIEVER CATHETER, S$1,058
- CT THROMBECTOMY SYSTEM KIT$1,058
- GORE EXCLUDER Thoracoabdominal Branch Endoprosthesis$859
- DIVERGENCE-L$721
- Alto Abdominal Stent Graft System$647
- Torus Stent Graft System$496
- ENDOCROSS Device$496
- GORE VIABAHN Endoprosthesis with Heparin$183
- GORE VIABAHN Endoprosthesis$148
- AFX2 Bifurcated Endograft System$131
- Brigade$113
- VIABAHN VBX Balloon Expandable Endoprosthesis$103
How this compares
$8,396 in reported general payments places this provider in the 70th percentile of 183 vascular surgery providers in Michigan.
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 |
|---|---|---|
| XareltoRivaroxaban | 31 | $27,449 |
| EliquisApixaban | 34 | $26,790 |
| Cilostazol | 56 | $1,926 |
| ClopidogrelClopidogrel Bisulfate | 94 | $1,394 |
| Atorvastatin Calcium | 15 | $125 |
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 |
|---|---|---|
| Johnson & JohnsonXarelto | $12 | $27,44931 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 70th percentile of 183 vascular surgery providers in Michigan.
Other vascular surgery in Novi
- Nicolas MouawadWest Branch$1.7M
- Enrique Criado PallaresMidland$800K
- Jordan KnepperEast Lansing$336K
- Joseph CuppariClinton Township$98K
- Eanas YassaGrand Rapids$81K
- Abedelkarim AbushmaiesBattle Creek$75K
- Kevin OnofreyDetroit$65K
- Yevgeniy RitsDetroit$57K
- Ryan KimSaginaw$50K
- Jimmy HaouilouSaint Clair Shores$45K
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.