Timothy Niesen, MD
Vascular & Interventional Radiology · Newark, DENPI 1780974105
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 20 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. Sirtex Medical Inc accounts for 63.8% of it on its own, with 3 other manufacturers making up the rest. Reporting peaked in 2019 at $838 and has fallen 87.3% since, to $106 in 2025.
Across 20 payments — averaging $51.35 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Sirtex Medical Inc$655
- Boston Scientific$169
- Heartflow, Inc.$121
- Argon Medical Devices, Inc.$82
What the payments were for
- Food & beverage$1,027100%
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 |
|---|---|---|
| Sirtex Medical Inc | 12 | $655 |
| Boston Scientific | 5 | $169 |
| Heartflow, Inc. | 2 | $121 |
| Argon Medical Devices, Inc. | 1 | $82 |
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.
- SIR-Spheres Microspheres$431
- FFRct$106
How this compares
Too few vascular & interventional radiology providers in Delawareto 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.
Other vascular & interventional radiology in Newark
- Christopher GrilliNewark$93K
- Assaf GraifNewark$83K
- Daniel LeungNewark$58K
- Demetrios AgriantonisNewark$12K
- Henry SzetoNewark$10K
- Uchenna NwosuNewark$8K
- Helen PaikNewark$6K
- Johnpaul ChizeaNewark$4K
- Xavier MohammedNewark$946
- William HartzNewark$20
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.