Dimitrios Koudoumas
Thoracic Surgery (Cardiothoracic Vascular Surgery) · Great Falls, MTNPI 1639456767
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $8,835 of the $12,240 with a category attached, or 72.2%. 34 manufacturers reported payments, led by W. L. Gore & Associates, Inc. at 36.2% of the total.
Across 196 payments — averaging $62.45 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- W. L. Gore & Associates, Inc.$4K
- Abiomed$1K
- Silk Road Medical, Inc.$1K
- Inari Medical, Inc.$558
- Medtronic$551
- Bolton Medical Inc$547
- plus $4K from 28 others
What the payments were for
- Travel & lodging$9798%
- Food & beverage$8,83572%
- Education$2,28819%
- Entertainment$1381%
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 |
|---|---|---|
| W. L. Gore & Associates, Inc. | 54 | $4,425 |
| Abiomed | 24 | $1,323 |
| Silk Road Medical, Inc. | 10 | $1,119 |
| Inari Medical, Inc. | 8 | $558 |
| Medtronic(2 entities) | 9 | $551 |
| Bolton Medical Inc | 8 | $547 |
| Abbott | 7 | $409 |
| Edwards Lifesciences | 7 | $396 |
| Endologix LLC | 4 | $374 |
| Inspiremd Ltd | 2 | $244 |
| Atricure, Inc. | 5 | $235 |
| Boston Scientific | 4 | $219 |
| Asahi Intecc USA, Inc. | 5 | $216 |
| Intuitive Surgical | 1 | $215 |
| Shockwave Medical, Inc | 5 | $178 |
| Johnson & Johnson(2 entities) | 7 | $172 |
| Penumbra, Inc. | 2 | $139 |
| Sioux Surgical Inc | 3 | $137 |
| Lemaitre Vascular, Inc. | 4 | $120 |
| Actelion Pharmaceuticals US, Inc. | 2 | $112 |
| BD | 2 | $76 |
| Novartis | 3 | $64 |
| Angiodynamics, Inc. | 2 | $58 |
| Kiniksa Pharmaceuticals International, PLC | 3 | $49 |
| AstraZeneca | 3 | $47 |
| Baxter Healthcare | 1 | $46 |
| Pfizer | 3 | $42 |
| Getinge USA Sales, LLC | 1 | $40 |
| Daiichi Sankyo Inc. | 2 | $36 |
| Baylis Medical Technologies Inc. | 1 | $29 |
| Merck | 1 | $18 |
| Artivion, Inc. | 1 | $16 |
| Amgen | 1 | $15 |
| Boehringer Ingelheim | 1 | $14 |
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.
- TAG Thoracic Endoprosthesis$1,320
- ENROUTE Transcarotid Stent$939
- ENROUTE Transcarotid Neuroprotection System$939
- ENHANCE Transcarotid Peripheral Access Kit$633
- ENROUTE .014 Guidewire$633
- FLOWTRIEVER CATHETER, S$478
- GORE VIABAHN VBX Balloon Expandable Endo$251
- CGuard Prime Carotid Stent System$244
- GORE EXCLUDER Thoracoabdominal Branch Endoprosthesis$226
- Da Vinci Surgical System$215
- Ensite Cardiac Mapping System$209
- GORE EXCLUDER AAA Endoprosthesis$204
- Endurant$175
- FlowTriever$172
- ClotTriever$172
- TREO ABDOMINAL STENT-GRAFT SYSTEM$158
- Ovation iX Iliac Stent Graft$150
- Vascular Graft$149
- CT THROMBECTOMY SYSTEM KIT$132
- VIABAHN VBX Balloon Expandable Endoprosthesis$131
How this compares
Too few thoracic surgery (cardiothoracic vascular surgery) providers in Montanato place this figure against a meaningful peer group, so we don't.
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 | 14 | $8,000 |
| ClopidogrelClopidogrel Bisulfate | 72 | $637 |
| Atorvastatin Calcium | 42 | $450 |
| Rosuvastatin Calcium | 34 | $423 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| PfizerEliquis | $42 | $8,00014 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. There are too few thoracic surgery (cardiothoracic vascular surgery) providers in Montanaon file to place this against a meaningful peer group, so we don't.
Other thoracic surgery (cardiothoracic vascular surgery) in Great Falls
- Steven BaileyGreat Falls$2K
- Brett WilliamsGreat Falls$463
- Roberto Amado-CattaneoGreat Falls$95
- Carlos DuranMissoula$296K
- Anthony CaffarelliMissoula$76K
- Travis AbichtMissoula$39K
- James MaxwellKalispell$27K
- Stewart LongMissoula$17K
- Michael MaxwellBozeman$6K
- Drew KirshnerKalispell$5K
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.