Mark Aasen, MD
Interventional Pain Medicine · Greenfield, WINPI 1184609356
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $5,000 of the $7,445 with a category attached, or 67.2%. Si-bone, Inc. accounts for 73.9% of it on its own, with 12 other manufacturers making up the rest. Reporting peaked in 2023 at $6,015 and has fallen 96.7% since, to $196 in 2025.
Across 67 payments — averaging $111.12 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Si-bone, Inc.$6K
- Nevro Corp.$792
- Curonix LLC$372
- Collegium Pharmaceutical, Inc.$193
- Johnson & Johnson$150
- Spinal Simplicity, LLC$102
- plus $332 from 7 others
What the payments were for
- Consulting fees$5,00067%
- Travel & lodging$2163%
- Food & beverage$2,23030%
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 |
|---|---|---|
| Si-bone, Inc. | 11 | $5,504 |
| Nevro Corp. | 22 | $792 |
| Curonix LLC | 5 | $372 |
| Collegium Pharmaceutical, Inc. | 10 | $193 |
| Johnson & Johnson | 1 | $150 |
| Spinal Simplicity, LLC | 4 | $102 |
| Boston Scientific | 1 | $97 |
| AbbVie | 4 | $75 |
| Medtronic | 3 | $54 |
| Abbott | 2 | $45 |
| Neuronetics, Inc. | 2 | $30 |
| Biohaven Pharmaceutical Holding Company Ltd. | 1 | $19 |
| Assertio Therapeutics, Inc. | 1 | $11 |
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
$7,445 in reported general payments places this provider in the 65th percentile of 41 interventional pain medicine providers in Wisconsin.
See all interventional pain medicine providers in Wisconsin →
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 interventional pain medicine in Greenfield
- Nileshkumar PatelGreenfield$25K
- Christopher HowsonGreen Bay$114K
- Matthew PileckiMount Pleasant$29K
- Christina MooreMilwaukee$26K
- Daniel BrunnerNeenah$24K
- Vishal Patelde Pere$23K
- Colin StairSummit$17K
- Timothy StaackeKenosha$13K
- Richard LennertzMilwaukee$11K
- Ryan ClarkGreen Bay$10K
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.