Gregory Sayuk
Gastroenterology · Saint Louis, MONPI 1760494280
Payments from drug & device makers
Across 916 payments — averaging $1161.32 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Sanofi$264K
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$236K
- AbbVie$200K
- Regeneron Healthcare Solutions, Inc.$138K
- Ardelyx, Inc.$104K
- Phathom Pharmaceuticals, Inc.$98K
- plus $24K from 4 others
Across 1 payment — averaging $7500.00 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.
- Ardelyx, Inc.$8K
What the payments were for
- Consulting fees$122,79712%
- Speaking & faculty fees$835,70879%
- Travel & lodging$79,1397%
- Food & beverage$23,3222%
- Education$2,8000%
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 |
|---|---|---|
| Sanofi | 142 | $263,990 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 231 | $235,729 |
| AbbVie(2 entities) | 230 | $199,797 |
| Regeneron Healthcare Solutions, Inc. | 95 | $138,464 |
| Ardelyx, Inc. | 94 | $103,919 |
| Phathom Pharmaceuticals, Inc. | 108 | $98,169 |
| Alnylam Pharmaceuticals Inc. | 5 | $11,826 |
| Ironwood Pharmaceuticals, Inc | 9 | $9,658 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $2,006 |
| QOL Medical, LLC | 1 | $208 |
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
$1,063,765 in reported general payments places this provider in the 95th percentile of 374 gastroenterology providers in Missouri.
Other gastroenterology in Saint Louis
- Parakkal DeepakSaint Louis$2M
- Katie SchroederSaint Louis$920K
- Kevin KorenblatSaint Louis$857K
- Brent Neuschwander-TetriSaint Louis$729K
- David AlpersSaint Louis$616K
- Chandra GyawaliSaint Louis$593K
- Richard RoodSaint Louis$567K
- Matthew CiorbaSaint Louis$551K
- Bruce BaconSaint Louis$307K
- Wing-Kin SynSaint Louis$283K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.