Has Nancy Reau, MD received payments from drug or device companies?

Yes. Drug and device makers reported $761,430 in general payments to Nancy Reau, MD across 642 transactions between 2019–2025. Most Open Payments records nationally are meals worth under $20; a reported payment is not evidence of wrongdoing.

Does a payment mean Nancy Reau, MD did something wrong?

No. Federal law requires drug and device makers to report almost every transfer of value to a physician, including a $14 sandwich at a lunch presentation. Consulting fees, research funding and royalties to device inventors are ordinary, legal parts of medicine. This site reports what was disclosed; it makes no allegation.

Where does this information about Nancy Reau, MD come from?

The U.S. Centers for Medicare & Medicaid Services. Payments come from Open Payments, published under the Physician Payments Sunshine Act. Billing and prescribing figures come from the Medicare Physician & Other Practitioners and Part D Prescriber public use files for 2024.

Nancy Reau, MD

Gastroenterology · Burr Ridge, ILNPI 1164585683

Payments from drug & device makers

$761,430in general payments, 2019–2025

Across 642 payments — averaging $1186.03 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Eiger Biopharmaceuticals, Inc.$187K
Gilead$180K
AbbVie$160K
Bausch Health US, LLC$89K
Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$50K
Novo Nordisk$26K
plus $71K from 38 others

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
Eiger Biopharmaceuticals, Inc.	80	$186,549
Gilead	148	$179,955
AbbVie	122	$159,633
Bausch Health US, LLC	55	$88,532
Salix Pharmaceuticals, A Division Of Bausch Health US, LLC	88	$50,053
Novo Nordisk	17	$26,126
Intercept Pharmaceuticals, Inc.	17	$18,633
Perspectum Diagnostics Ltd	4	$17,124
Mallinckrodt Hospital Products Inc.	4	$8,285
Abbott	9	$4,779
E.r. Squibb & Sons, L.L.C.	3	$4,326
GSK	2	$4,300
Janssen Research & Development, LLC	3	$3,590
Echosens North America, Inc.	1	$1,515
Mindray DS USA, Inc.	1	$1,500
Shire North American Group Inc	1	$1,300
Novartis	1	$1,300
Takeda Pharmaceuticals U.S.A., Inc.	9	$1,241
Madrigal Pharmaceuticals	13	$550
Johnson & Johnson(2 entities)	15	$355
Cook Medical LLC	3	$255
Bristol Myers Squibb	2	$210
Boston Scientific	2	$178
Merck	11	$171
Biocompatibles, Inc.	1	$147
Janssen Scientific Affairs, LLC	1	$136
QOL Medical, LLC	2	$119
Genentech, Inc.	2	$88
Mirum Pharmaceuticals, Inc.	4	$85
Ardelyx, Inc.	3	$83
Aimmune Therapeutics, Inc.	2	$36
Shionogi Inc	1	$34
Vivus LLC	2	$32
Medtronic	1	$32
Ferring Pharmaceuticals Inc.	2	$32
Sequana Medical US Inc.	1	$24
Phathom Pharmaceuticals, Inc.	1	$22
W. L. Gore & Associates, Inc.	1	$16
Organon	2	$16
AstraZeneca	1	$15
Ironwood Pharmaceuticals, Inc	1	$14
Albireo Pharma, Inc.	1	$13
Dova Pharmaceuticals	1	$13
Lilly USA, LLC	1	$13

How this compares

$761,430 in reported general payments places this provider in the 95th percentile of 787 gastroenterology providers in Illinois.

See all gastroenterology providers in Illinois →

Medicare billing

Part B allowed, 2024

$82,949

Medicare patients

388

Services billed

576

What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.

Other gastroenterology in Burr Ridge

Eugene ChangBurr Ridge$769K
Sujit JanardhanBurr Ridge$359K
Irving WaxmanBurr Ridge$176K
Kamran AyubOak Lawn$4.3M
David RubinChicago$3.6M
Jonathan RosenbergGurnee$3.1M
Stephen HanauerChicago$2.9M
Parambir DulaiChicago$2.2M
Charles BerkelhammerOak Lawn$1.9M
Ikuo HiranoChicago$1.8M

See the full list for Illinois →

Where these figures come from

Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
Identity: NPPES NPI Registry, July 2026.

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