Tristen Chun, MD
Surgery · Providence, RINPI 1780944777
Payments from drug & device makers
What this record shows
This record is dominated by grants: $15,000 of the $22,340 with a category attached, or 67.1%. Medtronic accounts for 72.3% of it on its own, with 10 other manufacturers making up the rest. Reporting peaked in 2019 at $9,224 and has fallen 96.1% since, to $358 in 2025. Among surgery clinicians in RI with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 68 payments — averaging $328.54 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$16K
- Abbott$2K
- W. L. Gore & Associates, Inc.$2K
- Cook Medical LLC$567
- Silk Road Medical, Inc.$358
- Walk Vascular, LLC$144
- plus $481 from 5 others
Across 14 payments — averaging $2889.09 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.
- Humacyte Global, Inc.$40K
What the payments were for
- Grants$15,00067%
- Travel & lodging$1,7138%
- Food & beverage$4,25719%
- Education$1,3706%
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) | 12 | $16,154 |
| Abbott | 21 | $2,498 |
| W. L. Gore & Associates, Inc. | 19 | $2,139 |
| Cook Medical LLC | 5 | $567 |
| Silk Road Medical, Inc. | 4 | $358 |
| Walk Vascular, LLC | 1 | $144 |
| Endologix LLC | 1 | $142 |
| Penumbra, Inc. | 1 | $127 |
| Integra Lifesciences Corporation | 1 | $124 |
| Centerline Biomedical Inc. | 1 | $49 |
| Getinge USA Sales, LLC | 2 | $38 |
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.
- Endurant$15,261
- OMNILINK ELITE$1,384
- EXCLUDER AAA Endoprosthesis$612
- INTEGRA$373
- ENROUTE Transcarotid Neuroprotection System$269
- ENROUTE Transcarotid Stent$269
- ENROUTE .014 Guidewire$269
- ENHANCE Transcarotid Peripheral Access Kit$269
- Vascular Graft$259
- Cook Medical AAA$235
- PERCLOSE PROGLIDE$184
- JETi All In One Non-Sterile Kit$144
- Torus Stent Graft System$142
- ENDOCROSS Device$142
- EXCLUDER Conformable AAA Endoprosthesis with Active Control$137
- GORE TAG Conformable Thoracic Endoprosthesis$136
- Zilver PTX$130
- Indigo System$127
- INTEGRA DERMAL REGENERATION TEMPLATE$124
- PRIMATRIX$124
How this compares
$22,340 in reported general payments places this provider in the 90th percentile of 108 surgery providers in Rhode Island.
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 | 12 | $6,334 |
| ClopidogrelClopidogrel Bisulfate | 40 | $380 |
| Atorvastatin Calcium | 36 | $322 |
| Prednisone | 14 | $56 |
| Oxycodone Hcl | 12 | $37 |
Paid to pharmacies, not to this prescriber.
Other surgery in Providence
- Joseph EspatProvidence$159K
- Marcoandrea GiorgiProvidence$63K
- Andrew LuhrsProvidence$51K
- William CioffiProvidence$18K
- Ponnandai SomasundarProvidence$10K
- Michael ConnollyProvidence$9K
- Erin FullerProvidence$7K
- Thach PhamProvidence$7K
- David EdmonsonProvidence$7K
- Brent EmighProvidence$6K
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.