Michael Karathanos
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 1 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. Every reported general payment came from a single manufacturer, Biogen. That places this record below the midpoint for neurology clinicians in OK, where the typical reported total is $1,439.
Across 1 payment — averaging $133.95 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Biogen$134
Across 193 payments — averaging $22,709 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.
- Eli Lilly$2M
- Eisai Inc.$2M
- AbbVie$222K
- Genentech, Inc.$157K
- Boehringer Ingelheim$55K
- Novartis$10K
- plus $7K from 2 others
What the payments were for
- Food & beverage$134100%
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.
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 |
|---|---|---|
| Biogen | 1 | $134 |
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.
- ADUHELM$134
How this compares
$134 in reported general payments places this provider in the 20th percentile of 152 neurology providers in Oklahoma.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| EliquisApixaban | 11 | $5,746 |
Paid to pharmacies, not to this prescriber.
Other neurology in Tulsa
- Jaclyn DuvallTulsa$1.4M
- Gregory ConnorTulsa$444K
- Tania ReynaTulsa$353K
- Christopher GlissonTulsa$125K
- Alok PasrichaTulsa$81K
- Aimee BorazanciTulsa$75K
- Randall WebbTulsa$31K
- Todd DunawayTulsa$26K
- Jeremy SalasTulsa$20K
- Jorge GonzalezTulsa$19K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.