Alan Diamond
Gastroenterology · Silver Spring, MDNPI 1457464851
Payments from drug & device makers
Across 155 payments — averaging $19.27 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$832
- Takeda Pharmaceuticals U.S.A., Inc.$338
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$270
- Bristol Myers Squibb$218
- Janssen Scientific Affairs, LLC$195
- Johnson & Johnson$177
- plus $957 from 17 others
What the payments were for
- Food & beverage$2,96699%
- Education$201%
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.
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 |
|---|---|---|
| AbbVie(2 entities) | 36 | $832 |
| Takeda Pharmaceuticals U.S.A., Inc. | 23 | $338 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 25 | $270 |
| Bristol Myers Squibb | 19 | $218 |
| Janssen Scientific Affairs, LLC | 2 | $195 |
| Johnson & Johnson | 11 | $177 |
| Ardelyx, Inc. | 4 | $143 |
| E.r. Squibb & Sons, L.L.C. | 2 | $134 |
| Boston Scientific | 1 | $101 |
| Pfizer | 5 | $95 |
| Merck | 6 | $93 |
| Ferring Pharmaceuticals Inc. | 5 | $77 |
| Covidien LP | 1 | $57 |
| Ironwood Pharmaceuticals, Inc | 4 | $57 |
| Sanofi | 2 | $36 |
| Braintree Laboratories, Inc. | 2 | $31 |
| Intercept Pharmaceuticals, Inc. | 1 | $25 |
| Redhill Biopharma Inc. | 1 | $24 |
| Gilead | 1 | $20 |
| Regeneron Healthcare Solutions, Inc. | 1 | $19 |
| Alfasigma USA, Inc. | 1 | $17 |
| QOL Medical, LLC | 1 | $17 |
| Daiichi Sankyo Inc. | 1 | $13 |
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
$2,986 in reported general payments places this provider in the 45th percentile of 455 gastroenterology providers in Maryland.
Other gastroenterology in Silver Spring
- Kenolisa OnwuemeBaltimore$4.5M
- Paul ThuluvathBaltimore$3.6M
- Apurva ModiRockville$3.3M
- Louis KormanChevy Chase$1.9M
- Marcia CantoBaltimore$1.6M
- Michael EpsteinAnnapolis$1.4M
- Rudrajit RaiColumbia$1.4M
- Natarajan RavendhranCatonsville$1.2M
- Raymond CrossBaltimore$1.2M
- Erica CohenChevy Chase$1.1M
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.