Grace Knuttinen
Vascular & Interventional Radiology · Phoenix, AZNPI 1427259555
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $11,400 of the $13,317 with a category attached, or 85.6%. 10 manufacturers reported payments, led by Medtronic at 56.5% of the total. 2025 is the largest year on record at $11,653, more than ten times the $380 reported in 2019.
Across 27 payments — averaging $493.21 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$8K
- Cook Incorporated$4K
- Cook Medical LLC$435
- Penumbra, Inc.$293
- Boston Scientific$244
- Philips North America LLC$203
- plus $421 from 4 others
Across 5 payments — averaging $18,000 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.
- Philips North America LLC$90K
What the payments were for
- Speaking & faculty fees$11,40086%
- Food & beverage$1,91714%
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 | 7 | $7,520 |
| Cook Incorporated | 1 | $4,200 |
| Cook Medical LLC | 5 | $435 |
| Penumbra, Inc. | 3 | $293 |
| Boston Scientific | 3 | $244 |
| Philips North America LLC | 3 | $203 |
| Sequana Medical US Inc. | 1 | $199 |
| Inari Medical, Inc. | 2 | $155 |
| W. L. Gore & Associates, Inc. | 1 | $36 |
| Stryker | 1 | $30 |
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$5,714
- Cook$4,308
- CONCERTOTM$1,800
- Indigo$296
- alfapump System$199
- ANGIOJET$182
- FlowTriever$145
- ClotTriever$145
- Indigo System$127
- Zilver Vena$124
How this compares
$13,317 in reported general payments places this provider in the 75th percentile of 80 vascular & interventional radiology providers in Arizona.
See all vascular & interventional radiology providers in Arizona →
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 Phoenix
- Kamalani HanamaikaiPhoenix$205K
- Sandeep RaoPhoenix$28K
- Patricia ThorpePhoenix$13K
- Trent DavisPhoenix$12K
- Douglas LewisPhoenix$11K
- Ankit ShahPhoenix$8K
- Sudhen DesaiPhoenix$8K
- Ryan ScottPhoenix$8K
- Santiago CornejoPhoenix$7K
- Sailendra NaiduPhoenix$7K
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.