John Trahanas, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) · Nashville, TNNPI 1699067819
Payments from drug & device makers
What this record shows
The money is spread across several categories — food and beverage (52.3%), travel and lodging and grants — rather than concentrated in one kind of arrangement. 14 manufacturers reported payments, led by Artivion, Inc. at 26.9% of the total. 2025 is the largest year on record at $6,075, more than ten times the $76 reported in 2021.
Across 66 payments — averaging $162.85 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Artivion, Inc.$3K
- W. L. Gore & Associates, Inc.$2K
- Medtronic$2K
- Abbott$1K
- Bolton Medical Inc$994
- Xvivo Perfusion Inc.$559
- plus $2K from 8 others
What the payments were for
- Grants$1,23511%
- Travel & lodging$3,75735%
- Food & beverage$5,61952%
- Education$1371%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| Artivion, Inc. | 11 | $2,893 |
| W. L. Gore & Associates, Inc. | 10 | $1,899 |
| Medtronic | 6 | $1,644 |
| Abbott | 9 | $1,158 |
| Bolton Medical Inc | 5 | $994 |
| Xvivo Perfusion Inc. | 3 | $559 |
| Atricure, Inc. | 8 | $454 |
| Abiomed | 4 | $342 |
| Edwards Lifesciences | 3 | $298 |
| Paragonix Technologies, Inc. | 3 | $160 |
| Medical Device Business Services, Inc. | 1 | $137 |
| Helios Cardio Inc | 1 | $113 |
| Innovation Technologies Inc | 1 | $75 |
| Baxter Healthcare | 1 | $23 |
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.
- AMDS-Ascyrus Medical$3,045
- GORE TAG Thoracic Branch Endoprosthesis$1,224
- TREO ABDOMINAL STENT-GRAFT SYSTEM$796
- THORATEC HEARTMATE 3 LVAS IMPLANT KIT$461
- Epic$416
- XVIVO Perfusion System (XPS)$411
- GORE TAG Conformable Thoracic Endoprosthesis$395
- SYNERGY ABLATION SYSTEM$331
- Impella$271
- ON-X AORTIC HEART VALVE WITH CONFORM-X SEWING RING AND EXTENDED HOLDER$208
- Avalus$183
- THORAFLEX HYBRID$175
- NAVITOR$151
- Edwards SAPIEN 3 Transcatheter Heart Valve$123
- CARDIAMEND$113
- Valiant Captivia$107
How this compares
$10,748 in reported general payments places this provider in the 75th percentile of 115 thoracic surgery (cardiothoracic vascular surgery) providers in Tennessee.
See all thoracic surgery (cardiothoracic vascular surgery) 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 |
|---|---|---|
| Mupirocin | 18 | $110 |
Paid to pharmacies, not to this prescriber.
Other thoracic surgery (cardiothoracic vascular surgery) in Nashville
- Grayson WheatleyNashville$900K
- V ReddyNashville$760K
- Clayton KaiserNashville$124K
- Sreekumar SubramanianNashville$98K
- Erin GillaspieNashville$95K
- Amber EdwardsNashville$83K
- Caitlin DemarestNashville$33K
- Henry ToddNashville$28K
- Swaroop BommareddiNashville$26K
- Ali IrshadNashville$20K
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.