Riad Azar, MD
Gastroenterology · Saint Louis, MONPI 1952358970
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (44.8%), food and beverage and speaking fees — rather than concentrated in one kind of arrangement. Boston Scientific accounts for 78.3% of it on its own, with 7 other manufacturers making up the rest. Reporting peaked in 2019 at $1,250 and has fallen 55.5% since, to $556 in 2024.
Across 17 payments — averaging $164.27 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Boston Scientific$2K
- AbbVie$494
- Takeda Pharmaceuticals U.S.A., Inc.$26
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$22
- QOL Medical, LLC$19
- Ardelyx, Inc.$16
- plus $29 from 2 others
What the payments were for
- Consulting fees$1,25045%
- Speaking & faculty fees$56320%
- Food & beverage$98035%
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 |
|---|---|---|
| Boston Scientific | 5 | $2,186 |
| AbbVie | 6 | $494 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $26 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 1 | $22 |
| QOL Medical, LLC | 1 | $19 |
| Ardelyx, Inc. | 1 | $16 |
| Merck | 1 | $15 |
| Nestle Healthcare Nutrition Inc. | 1 | $14 |
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.
- General$1,250
- WALLFLEX$563
- Creon$243
- Skyrizi$126
- EMBOLD Fibered$120
How this compares
$2,793 in reported general payments places this provider in the 60th percentile of 374 gastroenterology providers in Missouri.
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 gastroenterology in Saint Louis
- Gregory SayukSaint Louis$1.1M
- Katie SchroederSaint Louis$730K
- David AlpersSaint Louis$616K
- Parakkal DeepakSaint Louis$205K
- Mauricio Lisker MelmanSaint Louis$179K
- Matthew CiorbaSaint Louis$156K
- Bruce BaconSaint Louis$138K
- Jeffrey CrippinSaint Louis$120K
- Vladimir KushnirSaint Louis$118K
- Kayci Huff-HardySaint Louis$116K
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.