Samuel Castillo
Gastroenterology · Chicago, ILNPI 1467503672
Payments from drug & device makers
Across 247 payments — averaging $18.00 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$2K
- Johnson & Johnson$509
- AbbVie$405
- Bristol Myers Squibb$303
- Merck$268
- Gilead$267
- plus $859 from 14 others
What the payments were for
- Food & beverage$4,447100%
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 |
|---|---|---|
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 126 | $1,836 |
| Johnson & Johnson | 20 | $509 |
| AbbVie | 20 | $405 |
| Bristol Myers Squibb | 16 | $303 |
| Merck | 13 | $268 |
| Gilead | 11 | $267 |
| Braintree Laboratories, Inc. | 7 | $131 |
| Pfizer | 6 | $126 |
| Madrigal Pharmaceuticals | 4 | $118 |
| Takeda Pharmaceuticals U.S.A., Inc. | 6 | $111 |
| Alfasigma USA, Inc. | 3 | $84 |
| Boston Scientific | 2 | $70 |
| Ironwood Pharmaceuticals, Inc | 3 | $53 |
| Ardelyx, Inc. | 2 | $42 |
| Intercept Pharmaceuticals, Inc. | 2 | $34 |
| Shionogi Inc | 1 | $28 |
| Redhill Biopharma Inc. | 2 | $27 |
| Nestle Healthcare Nutrition Inc. | 1 | $15 |
| Lucid Diagnostics Inc. | 1 | $13 |
| Romark Laboratories, LC | 1 | $9 |
How this compares
$4,447 in reported general payments places this provider in the 65th percentile of 787 gastroenterology providers in Illinois.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Omeprazole | 17 | $212 |
| Pantoprazole Sodium | 16 | $59 |
Paid to pharmacies, not to this prescriber.
Other gastroenterology in Chicago
- David RubinChicago$3.6M
- Stephen HanauerChicago$2.9M
- Parambir DulaiChicago$2.2M
- Ikuo HiranoChicago$1.8M
- Steven FlammChicago$1.6M
- Darren BrennerChicago$1.1M
- Russell CohenChicago$985K
- Mary RinellaChicago$938K
- Emanuelle BellaguardaChicago$868K
- Saurabh KapurChicago$867K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.