Thomas Wannenburg, MD
Clinical Cardiac Electrophysiology · Knoxville, TNNPI 1346225380
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $5,662 of the $8,243 with a category attached, or 68.7%. Medtronic accounts for 94.1% of it on its own, with 3 other manufacturers making up the rest. Reporting peaked in 2023 at $2,497 and has fallen 98.1% since, to $48 in 2025. That places this record below the midpoint for clinical cardiac electrophysiology clinicians in TN, where the typical reported total is $12,690.
Across 87 payments — averaging $94.74 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$8K
- Boston Scientific$380
- Abbott$74
- Abiomed$29
What the payments were for
- Travel & lodging$5,66269%
- Food & beverage$2,58131%
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 |
|---|---|---|
| Medtronic(2 entities) | 81 | $7,759 |
| Boston Scientific | 2 | $380 |
| Abbott | 3 | $74 |
| Abiomed | 1 | $29 |
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.
How this compares
$8,243 in reported general payments places this provider in the 40th percentile of 82 clinical cardiac electrophysiology providers in Tennessee.
See all clinical cardiac electrophysiology 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| EliquisApixaban | 65 | $67,959 |
| Amiodarone Hcl | 27 | $597 |
| Metoprolol Succinate | 29 | $573 |
| Flecainide Acetate | 29 | $502 |
| Metoprolol Tartrate | 13 | $99 |
Paid to pharmacies, not to this prescriber.
Other clinical cardiac electrophysiology in Knoxville
- Jeffrey HirshKnoxville$36K
- Michael BaileyKnoxville$27K
- Elliott GoodwinKnoxville$26K
- William MahlowKnoxville$21K
- James CoxKnoxville$21K
- Nilamkumar PatelKnoxville$17K
- William LindsayKnoxville$4K
- Hitesh MehtaKnoxville$4K
- Stephen FahrigNashville$605K
- Gregory BashianNashville$361K
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.