Harish Shownkeen, MD
Vascular & Interventional Radiology · Winfield, ILNPI 1851311450
Payments from drug & device makers
What this record shows
Penumbra, Inc. accounts for 64.1% of it on its own, with 8 other manufacturers making up the rest.
Across 82 payments — averaging $167.52 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Penumbra, Inc.$9K
- Microvention, Inc.$2K
- Rapid Medical Ltd$2K
- Stryker$471
- Siemens Medical Solutions USA, Inc.$312
- Johnson & Johnson$155
- plus $202 from 3 others
Across 20 payments — averaging $2639.28 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.
- Microvention, Inc.$48K
- Medtronic$4K
- Stryker$2K
What the payments were for
- Travel & lodging$7,27753%
- Food & beverage$6,45947%
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. | 43 | $8,811 |
| Microvention, Inc. | 17 | $1,978 |
| Rapid Medical Ltd | 10 | $1,808 |
| Stryker | 4 | $471 |
| Siemens Medical Solutions USA, Inc. | 2 | $312 |
| Johnson & Johnson | 1 | $155 |
| Medtronic(2 entities) | 3 | $155 |
| Portola Pharmaceuticals, LLC | 1 | $26 |
| Cardinal Health 200 LLC | 1 | $21 |
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.
- Penumbra System$4,405
- TIGERTRIEVER 17 REVASCULARIZATION DEVICE$1,567
- COMANECI 17$1,567
- Smart Coil$1,338
- REAL System$1,239
- Indigo System$925
- WEB$773
- WEB Aneurysm Embolization System$327
- SURPASS$321
- POD$279
- RED 72$277
- Penumbra SMART Coil$212
- CorPath Imaging System$194
- WEB DETACHMENT CONTROLLER$190
- BALLOON CATHETER$172
- Artemis$160
- TUBING KIT - STROKE$157
- SOFIA 6F-131CM STR$157
- EMBOTRAP II Revascularization Device$155
- STENT$147
How this compares
$13,737 in reported general payments places this provider in the 80th percentile of 197 vascular & interventional radiology providers in Illinois.
See all vascular & interventional radiology providers in Illinois →
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 Winfield
- Owen SweisWinfield$16K
- Ketan AminWinfield$11K
- Riad SalemChicago$2.3M
- Kush DesaiChicago$1M
- Robert LewandowskiChicago$954K
- Christopher MolvarChicago$850K
- Sreekumar MadasseryChicago$459K
- Bulent ArslanChicago$300K
- Paramjit ChopraHinsdale$284K
- Rotimi JohnsonElgin$232K
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.