Ayman Ahmed, MD
Vascular Surgery · Marshfield, WINPI 1275811200
Payments from drug & device makers
What this record shows
The money is spread across several categories — travel and lodging (45.3%), food and beverage and consulting fees — rather than concentrated in one kind of arrangement. 23 manufacturers reported payments, led by Medtronic at 35.3% of the total. Reporting peaked in 2023 at $4,866 and has fallen 64.8% since, to $1,715 in 2025.
Across 134 payments — averaging $89.50 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$4K
- W. L. Gore & Associates, Inc.$2K
- Philips North America LLC$1K
- Silk Road Medical, Inc.$1K
- Alphatec Spine, Inc$820
- Limflow Inc.$546
- plus $2K from 17 others
What the payments were for
- Consulting fees$1,25010%
- Travel & lodging$5,43445%
- Food & beverage$5,22044%
- Education$881%
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) | 53 | $4,231 |
| W. L. Gore & Associates, Inc. | 19 | $1,955 |
| Philips North America LLC | 2 | $1,270 |
| Silk Road Medical, Inc. | 12 | $1,022 |
| Alphatec Spine, Inc | 4 | $820 |
| Limflow Inc. | 2 | $546 |
| Inari Medical, Inc. | 7 | $513 |
| Penumbra, Inc. | 4 | $413 |
| Cook Medical LLC | 5 | $352 |
| Integra Lifesciences Corporation | 6 | $319 |
| Shockwave Medical, Inc | 1 | $121 |
| Johnson & Johnson | 3 | $66 |
| Bard Peripheral Vascular, Inc. | 4 | $58 |
| Stryker | 1 | $52 |
| Bolton Medical Inc | 2 | $48 |
| Boston Scientific | 1 | $40 |
| Whip Mix Corporation | 1 | $34 |
| Tactile Systems Technology Inc | 2 | $34 |
| Genentech USA, Inc. | 1 | $24 |
| Acell, Inc. | 1 | $22 |
| Dentsply Sirona Inc | 1 | $21 |
| Lemaitre Vascular, Inc. | 1 | $16 |
| Janssen Scientific Affairs, LLC | 1 | $15 |
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.
- Valiant Captivia$1,507
- (7882) Image Guided Therapy Und$1,250
- CD HORIZON SPINAL SYSTEM$994
- ENROUTE Transcarotid Neuroprotection System$745
- Other - Miscellaneous$659
- GORE TAG Thoracic Endoprosthesis$655
- LIMFLOW SYSTEM$629
- ENROUTE Transcarotid Stent System$628
- ENHANCE Transcarotid Peripheral Access Kit$628
- ENROUTE 0.014 Guidewire$628
- GORE BIO-A Tissue Reinforcement$547
- ENDURANT IIS$474
- FLOWTRIEVER CATHETER, S$410
- Indigo System$342
- Zenith Alpha$142
- GORE TAG Thoracic Branch Endoprosthesis$126
- AMNIOEXCEL$126
- TCC-EZ$126
- PRIMATRIX$126
- INTEGRA DERMAL REGENERATION TEMPLATE$126
How this compares
$11,993 in reported general payments places this provider in the 85th percentile of 81 vascular 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| EliquisApixaban | 18 | $5,129 |
| JanuviaSitagliptin Phosphate | 18 | $4,947 |
| ClopidogrelClopidogrel Bisulfate | 46 | $369 |
| Atorvastatin Calcium | 18 | $121 |
| Oxycodone Hcl | 12 | $17 |
Paid to pharmacies, not to this prescriber.
Other vascular surgery in Marshfield
- Tahlia WeisMarshfield$22K
- Javariah AsgharMarshfield$4K
- Muhammad ZuberiMarshfield$891
- Stacey LejeuneWausau$105K
- Benjamin HerdrichWausau$90K
- Dai YamanouchiMadison$78K
- Kevin SchoepelWausau$17K
- Tiziano TallaritaEau Claire$15K
- John RobertsonTomah$15K
- Momodou JammehMilwaukee$14K
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.