Stephanus Viljoen, MD
Neurological Surgery · Columbus, OHNPI 1659506871
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (56.3%), travel and lodging and speaking fees — rather than concentrated in one kind of arrangement. Medtronic accounts for 80.6% of it on its own, with 5 other manufacturers making up the rest. 2025 is the largest year on record at $40,881, 2.9 times the $13,980 reported in 2019. Among neurological surgery clinicians in OH with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 285 payments — averaging $404.38 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$93K
- Kuros Biosciences USA, Inc$16K
- Medical Device Business Services, Inc.$5K
- Globus Medical$605
- Johnson & Johnson$323
- Orthofix Medical, Inc.$146
Across 74 payments — averaging $8137.74 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.
- Medtronic$594K
- Tyber Medical, LLC$8K
What the payments were for
- Consulting fees$64,85356%
- Speaking & faculty fees$16,22514%
- Travel & lodging$23,88221%
- Food & beverage$10,2909%
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) | 255 | $92,934 |
| Kuros Biosciences USA, Inc | 13 | $16,264 |
| Medical Device Business Services, Inc. | 5 | $4,976 |
| Globus Medical(2 entities) | 7 | $605 |
| Johnson & Johnson | 4 | $323 |
| Orthofix Medical, Inc. | 1 | $146 |
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.
- CD HORIZON SPINAL SYSTEM$34,395
- UNID_PASS$17,543
- MagnetOs$16,042
- CD HORIZON$7,057
- EXPEDIUM$4,932
- MAZOR X SYSTEM$1,764
- STEALTHSTATION S8 PLATFORM$1,708
- MazorX - Renaissance$1,197
- ADAPTIX INTERBODY SYSTEM WITH TITAN NANOLOCK SURFACE TECHNOLOGY$936
- INFUSE BONE GRAFT$342
- RELINE$172
- LessRay$170
- Bendini$170
- Pulse$170
- Mazor X Stealth Edition$158
- PIVOX Oblique Lateral Spinal System$156
- Trinity ELITE$146
- INTELLIS$134
- CATALYFT PL EXPANDABLE INTERBODY SYSTEM$132
- INFUSE$100
How this compares
$115,249 in reported general payments places this provider in the 90th percentile of 301 neurological surgery providers in Ohio.
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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Gabapentin | 28 | $140 |
Paid to pharmacies, not to this prescriber.
Other neurological surgery in Columbus
- Christian BonassoColumbus$656K
- Russell LonserColumbus$419K
- Chris KarasColumbus$339K
- David XuColumbus$263K
- Andrew GrossbachColumbus$213K
- Patrick YoussefColumbus$96K
- Daniel PrevedelloColumbus$93K
- Shahid NimjeeColumbus$81K
- Vikram ChakravarthyColumbus$77K
- Taylor SommerColumbus$56K
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.