Sang Na, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) · Fredericksburg, VANPI 1255328902
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $13,914 of the $19,894 with a category attached, or 69.9%. 24 manufacturers reported payments, led by Edwards Lifesciences at 48.4% of the total.
Across 231 payments — averaging $86.12 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Edwards Lifesciences$10K
- Atricure, Inc.$6K
- Medtronic$1K
- Boston Scientific$476
- Philips North America LLC$463
- Abbott$320
- plus $2K from 18 others
What the payments were for
- Travel & lodging$5,98030%
- Food & beverage$13,91470%
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 |
|---|---|---|
| Edwards Lifesciences | 119 | $9,634 |
| Atricure, Inc. | 48 | $6,146 |
| Medtronic(2 entities) | 16 | $1,087 |
| Boston Scientific | 3 | $476 |
| Philips North America LLC | 4 | $463 |
| Abbott | 2 | $320 |
| Johnson & Johnson(3 entities) | 5 | $310 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 12 | $258 |
| La Jolla Pharmaceutical Company | 4 | $198 |
| Coastal Medical Technologies LLC | 1 | $168 |
| Abiomed | 1 | $141 |
| Irhythm Technologies, Inc. | 1 | $133 |
| BD | 1 | $125 |
| Cvrx, Inc. | 1 | $125 |
| Octapharma USA, Inc. | 3 | $87 |
| Livanova USA, Inc. | 2 | $56 |
| Chiesi USA, Inc. | 1 | $27 |
| Integra Lifesciences Corporation | 1 | $26 |
| Davol Inc. | 1 | $24 |
| Teleflex LLC | 1 | $21 |
| LSI Solutions Inc | 1 | $19 |
| Medistim USA, Inc. | 1 | $17 |
| Solventum Corporation | 1 | $16 |
| Merit Medical Systems Inc | 1 | $16 |
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.
- SYNERGY ABLATION SYSTEM$3,307
- Edwards SAPIEN 3 Transcatheter Heart Valve$2,003
- EPI-SENSE GUIDED COAGULATION SYSTEM WITH VISITRAX$1,603
- ATRICLIP LAA EXCLUSION SYSTEM$863
- Edwards SAPIEN 3 Ultra Transcatheter Heart Valve$818
- CoreValve Evolut$397
- EPI-SENSE GUIDED COAGULATION SYS$342
- ATRICURE CRYOICE CRYOABLATION SYSTEM (CRYO2)$299
- ATRICURE CRYOICE CRYOSPHERE CRYOABLATION SYSTEM$249
- COREVALVE EVOLUT R$206
- Confirm Rx$166
- Mosaic$160
- Quadra Assura CRT Defibrillator$153
- Echelon Flex$151
- GIAPREZA$148
- ZIO Patch$133
- ATRICURE ATRICLIP LAA EXCLUSION$128
- CVX-300$126
- HemoSphere$125
- Barostim Neo System$125
How this compares
$19,894 in reported general payments places this provider in the 80th percentile of 109 thoracic surgery (cardiothoracic vascular surgery) providers in Virginia.
See all thoracic surgery (cardiothoracic vascular surgery) providers in Virginia →
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 thoracic surgery (cardiothoracic vascular surgery) in Fredericksburg
- John SherwoodFredericksburg$14K
- John CardoneFredericksburg$6K
- Clinton KempNorfolk$367K
- Sandeep KhandharFairfax$261K
- Mark CooperHampton$219K
- Linda MartinCharlottesville$76K
- Kenneth SaumLynchburg$56K
- Michael WeyantFalls Church$47K
- Mark JosephRoanoke$44K
- Justin MilliganVirginia Beach$42K
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.