Andrew Tsen, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) · Portland, ORNPI 1659364719
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $3,526 of the $4,220 with a category attached, or 83.6%. 25 manufacturers reported payments, led by Medtronic at 48.2% of the total. Reporting peaked in 2019 at $1,966 and has fallen 70.5% since, to $580 in 2025. That places this record below the midpoint for thoracic surgery (cardiothoracic vascular surgery) clinicians in OR, where the typical reported total is $5,462.
Across 89 payments — averaging $47.41 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$2K
- Abiomed$634
- Edwards Lifesciences$252
- Atricure, Inc.$203
- Artivion, Inc.$142
- Depuy Synthes Products, Inc.$110
- plus $846 from 19 others
What the payments were for
- Travel & lodging$69316%
- Food & beverage$3,52684%
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 |
|---|---|---|
| Medtronic(3 entities) | 18 | $2,032 |
| Abiomed | 23 | $634 |
| Edwards Lifesciences | 3 | $252 |
| Atricure, Inc. | 3 | $203 |
| Artivion, Inc. | 7 | $142 |
| Depuy Synthes Products, Inc. | 3 | $110 |
| Pinnacle Biologics, Inc | 1 | $98 |
| Baxter Healthcare | 5 | $90 |
| Merck | 3 | $81 |
| AstraZeneca | 3 | $77 |
| Johnson & Johnson | 2 | $74 |
| Getinge USA Sales, LLC | 3 | $66 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 3 | $57 |
| Medical Device Business Services, Inc. | 1 | $40 |
| Vertex | 1 | $28 |
| Teleflex LLC | 1 | $28 |
| Left Coast Surgical Inc | 1 | $27 |
| Corcym Inc | 1 | $25 |
| Portola Pharmaceuticals, LLC | 1 | $25 |
| Solventum Corporation | 1 | $25 |
| Lemaitre Vascular, Inc. | 1 | $25 |
| Bayer | 1 | $24 |
| Abbott | 1 | $24 |
| Octapharma USA, Inc. | 1 | $18 |
| Davol Inc. | 1 | $15 |
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
$4,220 in reported general payments places this provider in the 45th percentile of 52 thoracic surgery (cardiothoracic vascular surgery) providers in Oregon.
See all thoracic surgery (cardiothoracic vascular surgery) providers in Oregon →
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 Portland
- Steven DemeesterPortland$566K
- Howard SongPortland$64K
- Castigliano BhamidipatiPortland$52K
- Areo SaffarzadehPortland$51K
- Jonathan DanielPortland$49K
- Robert DubosePortland$45K
- Brandon TieuPortland$39K
- Kevin KoomalsinghPortland$34K
- Jeffrey BoskindPortland$30K
- Aubyn MarathPortland$29K
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.