Gastroenterology in Northbrook, IL
2 verified gastroenterology doctors in Northbrook.
Gastroenterologists specialize in the digestive system, treating conditions of the stomach, intestines, liver, and pancreas.
NPPES tenure ≠ clinical experience. "Years on NPPES" is time since the physician first registered a National Provider Identifier, not time practicing medicine. Verify current license status with the state medical board.
Verify a license at the Illinois Dept. of Financial & Professional Regulation
Dr. Claus Fimmel, MD
Gastroenterology
CMS Open Payments· No payments in 2023
Industry Payments
No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.
Dr. Jeffrey Nathanson, MD
Gastroenterology
CMS Open Payments· $117,023 (2023)
Industry Payments (2023)
Reported by drug and device makers to CMS Open Payments. These payments are legal and disclosed — shown as context, not a judgment.
$117,023
Total received
166
Transactions
25
Paying companies
Top paying companies
Among the 17,272 gastroenterology doctors we've analyzed, about 63% received any industry payment (median $623 among those who did). This doctor's total is higher than 98% of that group — among the highest recipients.
Benchmark reflects doctors we've analyzed, not all US gastroenterology doctors.
Payments to Jeffrey Nathanson do not imply any wrongdoing. Many are meals, education, or research support.