Clay Wiske, MD
Vascular Surgery · Palo Alto, CANPI 1669821567
Payments from drug & device makers
What this record shows
The money is spread across several categories — food and beverage (41.7%), travel and lodging and consulting fees — rather than concentrated in one kind of arrangement. 17 manufacturers reported payments, led by Boston Scientific at 25.0% of the total.
Across 111 payments — averaging $65.38 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Boston Scientific$2K
- Shockwave Medical, Inc$2K
- Cook Medical LLC$1K
- Silk Road Medical, Inc.$903
- Medtronic$786
- Globus Medical$431
- plus $678 from 11 others
What the payments were for
- Consulting fees$1,20017%
- Travel & lodging$2,73138%
- Food & beverage$3,02642%
- Education$3014%
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 |
|---|---|---|
| Boston Scientific | 12 | $1,815 |
| Shockwave Medical, Inc | 5 | $1,549 |
| Cook Medical LLC | 38 | $1,095 |
| Silk Road Medical, Inc. | 3 | $903 |
| Medtronic | 32 | $786 |
| Globus Medical | 3 | $431 |
| Penumbra, Inc. | 8 | $360 |
| Bolton Medical Inc | 1 | $72 |
| Stryker | 1 | $47 |
| Cvrx, Inc. | 1 | $41 |
| Mimedx Group, Inc. | 1 | $34 |
| Angiodynamics, Inc. | 1 | $29 |
| Philips North America LLC | 1 | $24 |
| Sirtex Medical Inc | 1 | $21 |
| Tactile Systems Technology Inc | 1 | $19 |
| Organogenesis Inc. | 1 | $17 |
| W. L. Gore & Associates, Inc. | 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.
How this compares
$7,257 in reported general payments places this provider in the 60th percentile of 519 vascular surgery providers in California.
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 |
|---|---|---|
| Cilostazol | 16 | $438 |
| ClopidogrelClopidogrel Bisulfate | 27 | $279 |
Paid to pharmacies, not to this prescriber.
Other vascular surgery in Palo Alto
- Venita ChandraPalo Alto$488K
- Karthikeshwar KasirajanPalo Alto$349K
- Jason LeePalo Alto$228K
- Kenneth TranPalo Alto$65K
- Son DuongFountain Valley$503K
- Sukgu HanLos Angeles$477K
- Leigh Ann ObanionFresno$469K
- Trevor DerderianRancho Mirage$359K
- Johnathon RolloLos Angeles$337K
- Melissa LojaFairfield$272K
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.