Samuel Leung
Pediatric Gastroenterology · Park Ridge, ILNPI 1568801645
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $3,028 of the $3,428 with a category attached, or 88.3%. 18 manufacturers reported payments, led by AbbVie at 27.0% of the total. Reporting peaked in 2021 at $1,021 and has fallen 69.0% since, to $317 in 2025.
Across 130 payments — averaging $26.37 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$925
- QOL Medical, LLC$625
- Johnson & Johnson$551
- Mirum Pharmaceuticals, Inc.$393
- Janssen Scientific Affairs, LLC$286
- Regeneron$133
- plus $515 from 12 others
What the payments were for
- Speaking & faculty fees$40012%
- Food & beverage$3,02888%
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 | 54 | $925 |
| QOL Medical, LLC | 7 | $625 |
| Johnson & Johnson(2 entities) | 38 | $551 |
| Mirum Pharmaceuticals, Inc. | 3 | $393 |
| Janssen Scientific Affairs, LLC | 3 | $286 |
| Regeneron | 1 | $133 |
| Takeda Pharmaceuticals U.S.A., Inc. | 6 | $116 |
| Coloplast | 4 | $78 |
| Nestle Healthcare Nutrition Inc. | 4 | $76 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 1 | $69 |
| Pfizer | 2 | $57 |
| Ipsen Biopharmaceuticals, Inc | 1 | $22 |
| Daiichi Sankyo Inc. | 1 | $22 |
| Shire North American Group Inc | 1 | $19 |
| Olympus America Inc. | 1 | $18 |
| Regeneron Healthcare Solutions, Inc. | 1 | $16 |
| AstraZeneca | 1 | $14 |
| Travere Therapeutics, Inc. | 1 | $10 |
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
$3,428 in reported general payments places this provider in the 80th percentile of 58 pediatric gastroenterology providers in Illinois.
Other pediatric gastroenterology in Park Ridge
- Thirumazhisai GunasekaranPark Ridge$9K
- Kiranmai GorlaPark Ridge$1K
- Hector HernandezPark Ridge$245
- Malgorzata BujarskaPark Ridge$146
- Michele ChoPark Ridge$52
- Amir KagalwallaPark Ridge$0
- Joshua WechslerChicago$433K
- Valeria CohranChicago$212K
- Lee BassChicago$149K
- Alyssa KriegermeierChicago$22K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.