Michael Sassman, DO
Vascular & Interventional Radiology · Duluth, MNNPI 1841263803
Payments from drug & device makers
What this record shows
The money is spread across several categories — food and beverage (53.4%), travel and lodging and consulting fees — rather than concentrated in one kind of arrangement. 15 manufacturers reported payments, led by Stryker at 27.3% of the total.
Across 97 payments — averaging $71.34 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Stryker$2K
- Medtronic$2K
- GE HealthCare$899
- Boston Scientific$745
- Inari Medical, Inc.$732
- Penumbra, Inc.$481
- plus $541 from 9 others
Across 1 payment — averaging $5349.57 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.
- Medtronic$5K
What the payments were for
- Consulting fees$3755%
- Travel & lodging$2,60938%
- Food & beverage$3,69853%
- Education$2393%
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 |
|---|---|---|
| Stryker | 14 | $1,886 |
| Medtronic(2 entities) | 21 | $1,636 |
| GE HealthCare | 5 | $899 |
| Boston Scientific | 22 | $745 |
| Inari Medical, Inc. | 14 | $732 |
| Penumbra, Inc. | 4 | $481 |
| Tersera Therapeutics LLC | 5 | $245 |
| Imperative Care, Inc | 3 | $85 |
| Angiodynamics, Inc. | 2 | $67 |
| Philips North America LLC | 2 | $36 |
| Bard Peripheral Vascular, Inc. | 1 | $25 |
| Asahi Intecc USA, Inc. | 1 | $25 |
| Cook Medical LLC | 1 | $24 |
| Terumo Medical Corporation | 1 | $22 |
| BD | 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.
- OPTABLATE$791
- ALLIA$672
- IVS - VERTEBRAL AUGMENTATION PRODUCTS$573
- FLOWTRIEVER CATHETER, S$571
- CT THROMBECTOMY SYSTEM KIT$571
- INTELLIS ADAPTIVESTIM$465
- VenaSeal$375
- mild Device Kit$373
- Indigo System$336
- SPINEJACK$210
- SYNCHROMEDII$173
- Emprint$172
- Peripheral RotaLink Plus$170
- RUBY Coil$120
- IVS - IVAS$117
How this compares
$6,920 in reported general payments places this provider in the 70th percentile of 78 vascular & interventional radiology providers in Minnesota.
See all vascular & interventional radiology providers in Minnesota →
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 Duluth
- Morgan AlthoenDuluth$782
- Jafar GolzarianGolden Valley$501K
- Michael RosenbergMinneapolis$134K
- Andrew ThoresonPlymouth$129K
- Reza TalaieMinneapolis$64K
- Michael CummingSartell$60K
- Bjorn EngstromMinneapolis$55K
- Sandra NewberryEden Prairie$41K
- Sameer GadaniMinneapolis$33K
- Donna DsouzaMinneapolis$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.