Nathan Frenk, MD
Vascular & Interventional Radiology · Boston, MANPI 1932582178
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $3,950 of the $4,954 with a category attached, or 79.7%. 19 manufacturers reported payments, led by Terumo Medical Corporation at 26.3% of the total.
Across 71 payments — averaging $69.77 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Terumo Medical Corporation$1K
- Boston Scientific$899
- Inari Medical, Inc.$600
- Penumbra, Inc.$373
- Medtronic$321
- Angiodynamics, Inc.$300
- plus $1K from 13 others
What the payments were for
- Travel & lodging$1,00320%
- Food & beverage$3,95080%
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 |
|---|---|---|
| Terumo Medical Corporation | 9 | $1,305 |
| Boston Scientific | 10 | $899 |
| Inari Medical, Inc. | 12 | $600 |
| Penumbra, Inc. | 3 | $373 |
| Medtronic(2 entities) | 8 | $321 |
| Angiodynamics, Inc. | 9 | $300 |
| Trisalus Life Sciences, Inc. | 2 | $268 |
| Stryker | 4 | $167 |
| Johnson & Johnson | 1 | $166 |
| Sirtex Medical Inc | 1 | $146 |
| Bard Peripheral Vascular, Inc. | 1 | $111 |
| Avanos Medical | 1 | $73 |
| Imperative Care, Inc | 1 | $54 |
| Cardiva Medical, Inc. | 2 | $37 |
| Cardiovascular Systems Inc. | 2 | $32 |
| W. L. Gore & Associates, Inc. | 2 | $32 |
| Merit Medical Systems Inc | 1 | $27 |
| Philips North America LLC | 1 | $25 |
| Cook Medical LLC | 1 | $19 |
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
$4,954 in reported general payments places this provider in the 65th percentile of 89 vascular & interventional radiology providers in Massachusetts.
See all vascular & interventional radiology providers in Massachusetts →
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 vascular & interventional radiology in Boston
- Suvranu GanguliBoston$878K
- Ronald ArellanoBoston$559K
- Yan EpelboymBoston$83K
- Dimitry RabkinBoston$65K
- Ammar SarwarBoston$53K
- Muneeb AhmedBoston$45K
- Mohammad BaderBoston$29K
- Julie BulmanBoston$24K
- Ezra BurchBoston$19K
- Rajasekhara AyyagariBoston$14K
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.