Andrew Ferrell, MD
Vascular & Interventional Radiology · Knoxville, TNNPI 1609081520
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (46.7%), food and beverage and travel and lodging — rather than concentrated in one kind of arrangement. Medical Device Business Services, Inc. accounts for 73.6% of it on its own, with 11 other manufacturers making up the rest. Reporting peaked in 2024 at $10,556 and has fallen 92.4% since, to $802 in 2025.
Across 148 payments — averaging $94.09 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medical Device Business Services, Inc.$10K
- Johnson & Johnson$2K
- Penumbra, Inc.$686
- Stryker$280
- Medtronic$277
- Imperative Care, Inc$139
- plus $111 from 6 others
Across 1 payment — averaging $375.00 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.
- Medical Device Business Services, Inc.$375
What the payments were for
- Consulting fees$6,50247%
- Travel & lodging$3,46225%
- Food & beverage$3,96228%
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 |
|---|---|---|
| Medical Device Business Services, Inc. | 15 | $10,254 |
| Johnson & Johnson | 84 | $2,179 |
| Penumbra, Inc. | 15 | $686 |
| Stryker | 8 | $280 |
| Medtronic(2 entities) | 12 | $277 |
| Imperative Care, Inc | 8 | $139 |
| Avanos Medical | 1 | $31 |
| Microvention, Inc. | 1 | $29 |
| Inari Medical, Inc. | 1 | $16 |
| Cardinal Health 200 LLC | 1 | $14 |
| Biogen | 1 | $13 |
| Asahi Intecc USA, Inc. | 1 | $8 |
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.
- EMBOGUARD$8,573
- CEREPAK UNIFORM$1,533
- Jet 7$120
- AXS VECTA 71$113
- SURPASS EVOLVE$113
How this compares
$13,926 in reported general payments places this provider in the 80th percentile of 76 vascular & interventional radiology providers in Tennessee.
See all vascular & interventional 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 vascular & interventional radiology in Knoxville
- Britton WoodwardKnoxville$1.6M
- Harry HixsonKnoxville$12K
- Jacob DepoloKnoxville$3K
- Scott WegrynKnoxville$2K
- Aron CharyGermantown$219K
- Samdeep MouliNashville$217K
- Reed OmaryNashville$66K
- Gregory BrunoJackson$59K
- David ZielskeNashville$46K
- Phillip ZeniMemphis$44K
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.