Kwaku Opoku, MD
Vascular & Interventional Radiology · Springfield, ILNPI 1477059186
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $3,844 of the $6,349 with a category attached, or 60.6%. Penumbra, Inc. accounts for 77.5% of it on its own, with 9 other manufacturers making up the rest. 2025 is the largest year on record at $3,476, more than ten times the $162 reported in 2022.
Across 37 payments — averaging $171.58 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Penumbra, Inc.$5K
- Merit Medical Systems Inc$425
- Terumo Medical Corporation$396
- Medtronic$186
- Argon Medical Devices, Inc.$148
- Balt USA, LLC$132
- plus $144 from 4 others
What the payments were for
- Travel & lodging$3,84461%
- Food & beverage$2,50439%
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. | 17 | $4,919 |
| Merit Medical Systems Inc | 3 | $425 |
| Terumo Medical Corporation | 4 | $396 |
| Medtronic | 3 | $186 |
| Argon Medical Devices, Inc. | 4 | $148 |
| Balt USA, LLC | 2 | $132 |
| Angiodynamics, Inc. | 1 | $61 |
| Siemens Medical Solutions USA, Inc. | 1 | $44 |
| Philips North America LLC | 1 | $22 |
| Inari Medical, Inc. | 1 | $17 |
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$4,189
- RUBY Coil$294
- Azur CX Detachable$267
- Penumbra System$150
- OSTEOCOOL RF ABLATION SYSTEM$147
- Prestige Coil System$115
- Clot Management$114
How this compares
$6,349 in reported general payments places this provider in the 65th 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 Springfield
- Aneesa GaffarSpringfield$8K
- 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
- Sreenivas ReddyHinsdale$172K
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.