Sreekumar Subramanian, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) · Nashville, TNNPI 1801888680
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $60,200 of the $98,459 with a category attached, or 61.1%. 41 manufacturers reported payments, led by Livanova USA, Inc. at 51.5% of the total. Reporting peaked in 2020 at $27,239 and has fallen 74.2% since, to $7,028 in 2025. Among thoracic surgery (cardiothoracic vascular surgery) 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 393 payments — averaging $250.53 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Livanova USA, Inc.$51K
- Abiomed$17K
- Intuitive Surgical$7K
- Corcym Inc$7K
- Edwards Lifesciences$5K
- Abbott$4K
- plus $9K from 35 others
Across 158 payments — averaging $2432.78 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.
- Abbott$252K
- Edwards Lifesciences$113K
- Livanova USA, Inc.$20K
What the payments were for
- Consulting fees$9,88810%
- Speaking & faculty fees$60,20061%
- Travel & lodging$15,81816%
- Food & beverage$11,05311%
- Education$1,5002%
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.
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.
- Perceval$31,692
- Memo4D$26,338
- Impella$12,477
- MEMO 4D$6,400
- Da Vinci Surgical System$5,120
- DAVINCI XI$1,500
- MITRIS RESILIA Mitral Valve$1,117
- BioGlue$973
- On-X$973
- ON-X AORTIC HEART VALVE WITH CONFORM-X SEWING RING AND EXTENDED HOLDER$500
- AMPLATZER Occluders$374
- GENERAL - THERAPIES$285
- THORATEC HEARTMATE 3 LVAS IMPLANT KIT$197
- Avalus$183
- EVERA MRI XT DR SURESCAN$173
- Mitra Clip system$162
- Penditure$160
- AQUADEX SMARTFLOW CONSOLE$156
- Bioprosthetic Mitral Valve$140
- XIENCE SIERRA$138
How this compares
$98,459 in reported general payments places this provider in the 95th 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 |
|---|---|---|
| Metoprolol Tartrate | 11 | $13 |
Paid to pharmacies, not to this prescriber.
Other thoracic surgery (cardiothoracic vascular surgery) in Nashville
- Grayson WheatleyNashville$900K
- V ReddyNashville$760K
- Clayton KaiserNashville$124K
- Erin GillaspieNashville$95K
- Amber EdwardsNashville$83K
- Caitlin DemarestNashville$33K
- Henry ToddNashville$28K
- Swaroop BommareddiNashville$26K
- Ali IrshadNashville$20K
- Brian LimaNashville$18K
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.