Jeffrey Nathanson
Gastroenterology · Northbrook, ILNPI 1972559615
Payments from drug & device makers
What this record shows
The money is spread across several categories — food and beverage (41.3%), speaking fees and consulting fees — rather than concentrated in one kind of arrangement. 35 manufacturers reported payments, led by E.r. Squibb & Sons, L.L.C. at 49.9% of the total. Reporting peaked in 2022 at $8,723 and has fallen 71.4% since, to $2,491 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 593 payments — averaging $51.07 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- E.r. Squibb & Sons, L.L.C.$15K
- AbbVie$5K
- Johnson & Johnson$2K
- Takeda Pharmaceuticals U.S.A., Inc.$2K
- Bristol Myers Squibb$1K
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$831
- plus $4K from 29 others
Across 91 payments — averaging $3268.54 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Genentech, Inc.$185K
- Regeneron$80K
- Takeda Pharmaceuticals U.S.A., Inc.$24K
- Braintree Laboratories, Inc.$8K
What the payments were for
- Consulting fees$6,42521%
- Speaking & faculty fees$10,03533%
- Travel & lodging$9753%
- Food & beverage$12,50241%
- Education$3491%
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 |
|---|---|---|
| E.r. Squibb & Sons, L.L.C. | 10 | $15,103 |
| AbbVie(2 entities) | 154 | $4,934 |
| Johnson & Johnson | 69 | $1,933 |
| Takeda Pharmaceuticals U.S.A., Inc. | 88 | $1,558 |
| Bristol Myers Squibb | 43 | $1,487 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 42 | $831 |
| Pfizer | 35 | $697 |
| Ardelyx, Inc. | 21 | $474 |
| Lilly USA, LLC | 15 | $357 |
| Celltrion USA Inc. | 13 | $324 |
| Braintree Laboratories, Inc. | 16 | $299 |
| QOL Medical, LLC | 11 | $247 |
| Madrigal Pharmaceuticals | 5 | $237 |
| Regeneron Healthcare Solutions, Inc. | 8 | $226 |
| Ironwood Pharmaceuticals, Inc | 14 | $225 |
| Vibrant Gastro, Inc. | 1 | $200 |
| Sanofi | 5 | $137 |
| Romark Laboratories, LC | 3 | $126 |
| Ipsen Biopharmaceuticals, Inc | 4 | $112 |
| US Oncology Corporate, Inc. | 1 | $88 |
| Phathom Pharmaceuticals, Inc. | 4 | $80 |
| Vivus LLC | 4 | $80 |
| Exact Sciences | 3 | $69 |
| Merck | 4 | $67 |
| Mauna Kea Technologies, Inc. | 3 | $64 |
| Currax Pharmaceuticals LLC | 3 | $53 |
| Intercept Pharmaceuticals, Inc. | 3 | $48 |
| Ferring Pharmaceuticals Inc. | 2 | $42 |
| Alfasigma USA, Inc. | 2 | $36 |
| Endo Pharmaceuticals Inc. | 2 | $30 |
| Fresenius Kabi USA, LLC | 1 | $29 |
| Sandoz | 1 | $28 |
| Olympus America Inc. | 1 | $27 |
| Mirum Pharmaceuticals, Inc. | 1 | $23 |
| Evoke Pharma, Inc. | 1 | $19 |
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.
- ZEPOSIA$15,487
- Skyrizi$1,800
- Rinvoq$1,800
- Vibrant Starter Kit$200
- REZDIFFRA$147
How this compares
$30,286 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 |
|---|---|---|
| UcerisBudesonide | 14 | $12,542 |
| Rabeprazole Sodium | 11 | $551 |
| Pantoprazole Sodium | 14 | $148 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLCUceris | $831 | $12,54214 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 90th percentile of 787 gastroenterology providers in Illinois.
Other gastroenterology in Northbrook
- 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.