Volker Sonntag
Neurological Surgery · Phoenix, AZNPI 1316933831
Payments from drug & device makers
What this record shows
This record is dominated by royalties or licence payments: $2,044,347 of the $2,044,347 with a category attached, or 100.0%. Every reported general payment came from a single manufacturer, Medtronic. Among neurological surgery clinicians in AZ with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 26 payments — averaging $78,629 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$2M
What the payments were for
- Royalty or licence$2,044,347100%
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 | 26 | $2,044,347 |
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.
- ATLANTIS$1,871,035
- VENTURE$134,022
- CENTERPIECE$39,290
How this compares
$2,044,347 in reported general payments places this provider in the 95th percentile of 173 neurological surgery providers in Arizona.
Other neurological surgery in Phoenix
- Robert SpetzlerPhoenix$12.8M
- Juan UribePhoenix$6.7M
- Stephen PapadopoulosPhoenix$6M
- Jay TurnerPhoenix$1.2M
- Michael LawtonPhoenix$761K
- Bryan LeePhoenix$441K
- Randall PorterPhoenix$410K
- Joseph ZabramskiPhoenix$381K
- Francisco PoncePhoenix$292K
- Curtis DickmanPhoenix$260K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.