Matthew Mell
Vascular Surgery · Stanford, CANPI 1730132978
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 91.5% of the total across 78 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 17 manufacturers reported payments, led by Medtronic at 27.6% of the total. Reporting peaked in 2019 at $2,040 and has fallen 93.9% since, to $125 in 2025.
Across 78 payments — averaging $82.12 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$2K
- W. L. Gore & Associates, Inc.$1K
- Silk Road Medical, Inc.$930
- Cook Medical LLC$817
- Penumbra, Inc.$222
- Viz.ai, Inc.$213
- plus $988 from 11 others
Across 1 payment — averaging $52,795 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.
- Merck$53K
What the payments were for
- Grants$1673%
- Food & beverage$5,86192%
- Education$3776%
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 |
|---|---|---|
| Medtronic(2 entities) | 20 | $1,765 |
| W. L. Gore & Associates, Inc. | 15 | $1,471 |
| Silk Road Medical, Inc. | 9 | $930 |
| Cook Medical LLC | 12 | $817 |
| Penumbra, Inc. | 2 | $222 |
| Viz.ai, Inc. | 2 | $213 |
| Shockwave Medical, Inc | 6 | $205 |
| Terumo Medical Corporation | 2 | $145 |
| Bolton Medical Inc | 1 | $126 |
| Johnson & Johnson | 1 | $115 |
| Checkpoint Surgical, Inc | 1 | $103 |
| Boston Scientific | 1 | $82 |
| Lemaitre Vascular, Inc. | 1 | $63 |
| Smith+Nephew | 1 | $50 |
| Amgen | 2 | $46 |
| Cardiovascular Systems Inc. | 1 | $29 |
| Artivion, Inc. | 1 | $25 |
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$1,009
- ENDURANT IIS$642
- GORE TAG Conformable Thoracic Endoprosthesis$634
- ENHANCE Transcarotid Peripheral Access Kit$625
- ENROUTE Transcarotid Stent System$427
- ENROUTE 0.014 Guidewire$427
- ENROUTE Transcarotid Stent$391
- Endurant$352
- Indigo$243
- Cook Medical Thoracic$236
- EXCLUDER Iliac Branch Endoprosthesis$220
- ENROUTE .014 Guidewire$198
- ENROUTE Enflate Transcarotid RX Balloon Dilatation Catheter$192
- GORE DRYSEAL Sheath$190
- EXCLUDER Conformable AAA Endoprosthesis with Active Control$160
- Valiant Captivia$137
- Heli-FX EndoAnchor System$137
- Relay Plus$126
- Viz.AI LVO$121
- Vascular Lithotripsy$119
How this compares
$6,405 in reported general payments places this provider in the 60th percentile of 519 vascular surgery providers in California.
Other vascular surgery in Stanford
- Ehab SorialStanford$67K
- Oliver AalamiStanford$31K
- Son DuongFountain Valley$503K
- Venita ChandraPalo Alto$488K
- Sukgu HanLos Angeles$477K
- Leigh Ann ObanionFresno$469K
- Trevor DerderianRancho Mirage$359K
- Karthikeshwar KasirajanPalo Alto$349K
- Johnathon RolloLos Angeles$337K
- Melissa LojaFairfield$272K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.