Nicholas Hempeck, DO
Neurological Surgery · Summit, WINPI 1447544788
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 18 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. Medtronic accounts for 62.6% of it on its own, with 5 other manufacturers making up the rest. 2024 is the largest year on record at $331, 7.2 times the $46 reported in 2019. That places this record below the midpoint for neurological surgery clinicians in WI, where the typical reported total is $1,325.
Across 18 payments — averaging $55.31 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$623
- Cerapedics Inc.$142
- Spineology Inc.$142
- Stryker$43
- Nanovis LLC$33
- Boston Scientific$13
What the payments were for
- Food & beverage$996100%
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 |
|---|---|---|
| Medtronic(2 entities) | 11 | $623 |
| Cerapedics Inc. | 2 | $142 |
| Spineology Inc. | 2 | $142 |
| Stryker | 1 | $43 |
| Nanovis LLC | 1 | $33 |
| Boston Scientific | 1 | $13 |
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
$996 in reported general payments places this provider in the 40th percentile of 133 neurological surgery 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 neurological surgery in Summit
- Zachary JaffaSummit$3K
- Karl GreenePleasant Prairie$2.1M
- Amin KassamMilwaukee$1M
- Thomas WascherAppleton$570K
- Max LeeMilwaukee$456K
- Kevin WojcikMilwaukee$58K
- Saman ShabaniMilwaukee$56K
- Marjorie WangMilwaukee$52K
- Azam AhmedMadison$35K
- Nathan ZwagermanMilwaukee$34K
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.