Bradley Dyniewski
Vascular Surgery · Chico, CANPI 1851779839
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $13,200 of the $19,690 with a category attached, or 67.0%. Shockwave Medical, Inc accounts for 74.5% of it on its own, with 10 other manufacturers making up the rest. Reporting peaked in 2023 at $15,047 and has fallen 94.9% since, to $763 in 2025.
Across 79 payments — averaging $249.24 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Shockwave Medical, Inc$15K
- Medtronic$1K
- W. L. Gore & Associates, Inc.$1K
- Abbott$595
- Silk Road Medical, Inc.$536
- Cook Medical LLC$491
- plus $969 from 5 others
What the payments were for
- Speaking & faculty fees$13,20067%
- Travel & lodging$4622%
- Food & beverage$5,97330%
- Education$550%
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 |
|---|---|---|
| Shockwave Medical, Inc | 17 | $14,673 |
| Medtronic(2 entities) | 18 | $1,237 |
| W. L. Gore & Associates, Inc. | 11 | $1,189 |
| Abbott | 5 | $595 |
| Silk Road Medical, Inc. | 4 | $536 |
| Cook Medical LLC | 8 | $491 |
| Endologix LLC | 8 | $415 |
| Boston Scientific | 2 | $189 |
| Stryker | 3 | $168 |
| Bolton Medical Inc | 2 | $160 |
| Bard Peripheral Vascular, Inc. | 1 | $38 |
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.
- Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter$14,422
- ENROUTE Transcarotid Neuroprotection System$1,073
- ENROUTE Transcarotid Stent$536
- GORE EXCLUDER Iliac Branch Endoprosthesis$422
- ENROUTE Enflate Transcarotid RX Balloon Dilatation Catheter$396
- EXCLUDER Conformable AAA Endoprosthesis with Active Control$338
- ENDURANT IIS$259
- Perclose ProStyle$185
- HawkOne$170
- VIABAHN VBX Balloon Expandable Endoprosthesis$147
- PERCLOSE PROGLIDE$145
- Relay Plus$143
- EXCLUDER Iliac Branch Endoprosthesis$137
- ARTIX MT$134
- Supera peripheral stent system$134
- ALTO$131
- Concerto$128
- Heli-FX EndoAnchor System$126
- Zenith Spiral-Z$123
- Perclose ProGlide suture mediated closure system$121
How this compares
$19,690 in reported general payments places this provider in the 80th 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 | 107 | $1,759 |
| ClopidogrelClopidogrel Bisulfate | 30 | $366 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 35 | $74 |
Paid to pharmacies, not to this prescriber.
Other vascular surgery in Chico
- 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
- Jason LeePalo Alto$228K
- John LaneSan Diego$212K
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.