Mark Brennan, DO
Vascular Surgery · Johnson City, NYNPI 1174523443
Payments from drug & device makers
Across 307 payments — averaging $69.34 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$6K
- Inari Medical, Inc.$2K
- W. L. Gore & Associates, Inc.$2K
- Baxter Healthcare$2K
- Penumbra, Inc.$1K
- Endologix LLC$1K
- plus $6K from 31 others
What the payments were for
- Travel & lodging$2,80213%
- Food & beverage$18,47787%
- Education$60%
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(2 entities) | 93 | $6,022 |
| Inari Medical, Inc. | 23 | $2,264 |
| W. L. Gore & Associates, Inc. | 25 | $2,052 |
| Baxter Healthcare | 39 | $2,031 |
| Penumbra, Inc. | 8 | $1,359 |
| Endologix LLC | 5 | $1,069 |
| Boston Scientific | 16 | $1,002 |
| Johnson & Johnson(2 entities) | 24 | $950 |
| Haemonetics Corporation | 7 | $528 |
| E.r. Squibb & Sons, L.L.C. | 7 | $490 |
| Bard Peripheral Vascular, Inc. | 8 | $391 |
| Silk Road Medical, Inc. | 5 | $311 |
| Lemaitre Vascular, Inc. | 5 | $286 |
| Shockwave Medical, Inc | 2 | $273 |
| Cook Medical LLC | 2 | $239 |
| Philips North America LLC | 3 | $199 |
| Abbott | 2 | $162 |
| Integra Lifesciences Corporation | 3 | $158 |
| Shape Memory Medical Inc. | 2 | $153 |
| EKOS Corporation | 1 | $150 |
| Surgical Specialties Corporation (US), Inc. (dba Corza Medical) | 1 | $145 |
| Teleflex LLC | 1 | $143 |
| Smith+Nephew | 4 | $142 |
| Bolton Medical Inc | 1 | $134 |
| Solventum Corporation | 2 | $131 |
| Cardiovascular Systems Inc. | 1 | $117 |
| Avenu Medical Inc. | 2 | $94 |
| Stryker | 3 | $83 |
| Pfizer | 3 | $37 |
| KCI USA, Inc. | 1 | $29 |
| Edwards Lifesciences | 1 | $28 |
| Coopersurgical, Inc. | 1 | $27 |
| BD | 1 | $23 |
| Sanara Medtech Inc. | 1 | $19 |
| Reprise Biomedical, Inc. | 1 | $18 |
| TELA Bio, Inc. | 2 | $17 |
| Venturemed Group, Inc. | 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.
- Abre$2,587
- FLOWTRIEVER CATHETER, S$2,302
- CT THROMBECTOMY SYSTEM KIT$1,731
- Penumbra System$852
- Ovation$810
- AFX$691
- VenaSeal$581
- XARELTO$578
- GORE TAG Thoracic Endoprosthesis$485
- ELIQUIS$459
- Indigo$372
- INTEGRA$361
- Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter$273
- GORE VIABAHN VBX Balloon Expandable Endo$252
- TEG6s HEMOSTASIS SYSTEM$239
- No Related Product$238
- PREVELEAK$238
- ARTEGRAFT VASCULAR GRAFT$234
- VIABAHN VBX Balloon Expandable Endoprosthesis$233
- GORE VIABAHN Endoprosthesis with Heparin$232
How this compares
$21,286 in reported general payments places this provider in the 75th percentile of 405 vascular surgery providers in New York.
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 |
|---|---|---|
| XareltoRivaroxaban | 33 | $21,237 |
| ClopidogrelClopidogrel Bisulfate | 21 | $66 |
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 |
|---|---|---|
| Johnson & JohnsonXarelto | $950 | $21,23733 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. Against peers, this provider's reported payments sit in the 75th percentile of 405 vascular surgery providers in New York.
Other vascular surgery in Johnson City
- Gary GelbfishNew York$1.9M
- Sundaram RavikumarDobbs Ferry$1.8M
- Antonios GasparisHuntington$1.7M
- John LantisNew York$1.4M
- Sonya NoorBuffalo$1.2M
- Brian DerubertisNew York$1M
- Thomas MaldonadoNew York$1M
- James McKinseyNew York$750K
- Peter FariesNew York$639K
- Virendra PatelNew York$590K
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.