Gregory Minwell, MD
Diagnostic Radiology · Knoxville, TNNPI 1528334281
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $76,050 of the $104,835 with a category attached, or 72.5%. Boston Scientific accounts for 85.4% of it on its own, with 19 other manufacturers making up the rest. Reporting peaked in 2024 at $54,263 and has fallen 69.4% since, to $16,592 in 2025. Among diagnostic radiology clinicians in TN with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 194 payments — averaging $540.39 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Boston Scientific$90K
- Fujifilm Corporation$7K
- Sirtex Medical Inc$3K
- Penumbra, Inc.$2K
- Biocompatibles, Inc.$1K
- Inari Medical, Inc.$940
- plus $1K from 14 others
What the payments were for
- Consulting fees$7,0007%
- Speaking & faculty fees$76,05073%
- Travel & lodging$14,09313%
- Food & beverage$7,6927%
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 | 122 | $89,578 |
| Fujifilm Corporation | 1 | $7,000 |
| Sirtex Medical Inc | 17 | $3,054 |
| Penumbra, Inc. | 7 | $2,016 |
| Biocompatibles, Inc. | 10 | $1,119 |
| Inari Medical, Inc. | 16 | $940 |
| Trisalus Life Sciences, Inc. | 3 | $392 |
| Medtronic | 4 | $260 |
| Getinge USA Sales, LLC | 3 | $126 |
| Stryker | 1 | $85 |
| Galvanize Therapeutics, Inc | 1 | $49 |
| Teleflex LLC | 1 | $37 |
| BD | 1 | $35 |
| Siemens Medical Solutions USA, Inc. | 1 | $32 |
| Varian Medical Systems, Inc. | 1 | $26 |
| Bard Peripheral Vascular, Inc. | 1 | $24 |
| Guerbet LLC | 1 | $18 |
| Incyte Corporation | 1 | $15 |
| Cardinal Health 200 LLC | 1 | $14 |
| Foundation Medicine, Inc. | 1 | $14 |
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.
- TheraSphere Y90 Glass Microspheres 7.0 GBq (US Commercial)$55,929
- TheraSphere Y90 Glass Microspheres 10 GBq$19,595
- Synapse 3D$7,000
- GENERAL PAIN MANAGEMENT$6,000
- THERASPHERE$4,500
- Indigo$2,977
- LAVA LES (Liquid Embolic System)$1,941
- THERASPHERE-BIO$949
- SIR-Spheres Microspheres$692
- FLOWTRIEVER CATHETER, S$472
- TRINAV INFUSION SYSTEM$296
- OBSIDIO$260
- FlowTriever$230
- ClotTriever$230
- Abre$189
- AXIOS$134
- CT THROMBECTOMY SYSTEM KIT$125
- GENERAL EMBOLICS$121
How this compares
$104,835 in reported general payments places this provider in the 95th percentile of 757 diagnostic radiology providers in Tennessee.
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 diagnostic radiology in Knoxville
- Daniel HossKnoxville$70K
- Jeffrey MahonyKnoxville$58K
- Robert EberlyKnoxville$42K
- Noel BergquistKnoxville$38K
- Andrew NicholsonKnoxville$35K
- Dana FathyKnoxville$30K
- Amanda SquiresKnoxville$17K
- John GoodwinKnoxville$9K
- Donald WalkerKnoxville$7K
- Matthew RamseyKnoxville$7K
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.