Agnieszka Witkowska, MD
Vascular & Interventional Radiology · Providence, RINPI 1972954188
Payments from drug & device makers
What this record shows
Penumbra, Inc. accounts for 61.4% of it on its own, with 6 other manufacturers making up the rest. 2025 is the largest year on record at $3,513, more than ten times the $70 reported in 2022.
Across 28 payments — averaging $133.52 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Penumbra, Inc.$2K
- W. L. Gore & Associates, Inc.$923
- Boston Scientific$172
- Medtronic$156
- Stryker$96
- XACT Robotics Ltd$70
- plus $26 from 1 others
What the payments were for
- Travel & lodging$2,14357%
- Food & beverage$1,59643%
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 |
|---|---|---|
| Penumbra, Inc. | 10 | $2,296 |
| W. L. Gore & Associates, Inc. | 8 | $923 |
| Boston Scientific | 1 | $172 |
| Medtronic | 4 | $156 |
| Stryker | 3 | $96 |
| XACT Robotics Ltd | 1 | $70 |
| Terumo Medical Corporation | 1 | $26 |
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.
- Indigo System$2,169
- GORE VIABAHN VBX Balloon Expandable Endo$590
- GORE VIATORR TIPS Endoprosthesis$235
- Simplicit90Y$172
How this compares
$3,739 in reported general payments places this provider in the 80th percentile of 26 vascular & interventional radiology providers in Rhode Island.
See all vascular & interventional radiology providers in Rhode Island →
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.
Other vascular & interventional radiology in Providence
- Dylan WolmanProvidence$16K
- John LeeProvidence$3K
- Mahesh JayaramanProvidence$2K
- Mangaladevi PatilProvidence$627
- Brian StainkenProvidence$416
- Sean O'NeillProvidence$413
- Sean RogersProvidence$258
- Aaron MaxwellProvidence$251
- Bryan JayProvidence$240
- Gregory DubelProvidence$210
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.