David van Thiel
Gastroenterology · Berwyn, ILNPI 1447367479
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $29,400 of the $39,601 with a category attached, or 74.2%. AbbVie accounts for 85.0% of it on its own, with 9 other manufacturers making up the rest. Reporting peaked in 2019 at $32,191 and has fallen 99.5% since, to $155 in 2025. Among gastroenterology clinicians in IL with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 171 payments — averaging $231.58 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$34K
- Shionogi Inc$3K
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$1K
- Intercept Pharmaceuticals, Inc.$579
- Amgen$239
- Madrigal Pharmaceuticals$142
- plus $302 from 4 others
What the payments were for
- Consulting fees$3,3638%
- Speaking & faculty fees$29,40074%
- Travel & lodging$2,6287%
- Food & beverage$4,21011%
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 | 59 | $33,666 |
| Shionogi Inc | 12 | $3,307 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 72 | $1,366 |
| Intercept Pharmaceuticals, Inc. | 19 | $579 |
| Amgen | 2 | $239 |
| Madrigal Pharmaceuticals | 2 | $142 |
| Aimmune Therapeutics, Inc. | 1 | $125 |
| Pinnacle Biologics, Inc | 1 | $116 |
| Gilead | 2 | $46 |
| Merck | 1 | $15 |
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
$39,601 in reported general payments places this provider in the 90th percentile of 787 gastroenterology providers in Illinois.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Atorvastatin Calcium | 18 | $179 |
| Alprazolam | 30 | $126 |
Paid to pharmacies, not to this prescriber.
Other gastroenterology in Berwyn
- David RubinChicago$1.5M
- Stephen HanauerChicago$1.4M
- Steven FlammChicago$1.3M
- Amar NaikDes Plaines$1.2M
- Darren BrennerChicago$1.1M
- Jonathan RosenbergGurnee$1M
- Daksesh PatelEvanston$745K
- Russell CohenChicago$690K
- Parambir DulaiChicago$668K
- Christopher ChapmanChicago$645K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.