Team Members

Dr. Ayub is considered an expert in advanced endoscopy and specializes in all areas of interventional endoscopy.
He has performed more than 70,000 procedures, including complex ERCP’s, endoscopic resections and endoscopic anti reflux procedures. Approximately 15 percent of his ERCP’s are failed procedures by other Endoscopists.

Leah Kramer is a certified Physician Assistant who graduated summa cum laude from the University of St. Francis earning her Bachelor of Science in Biology. She received her Masters of Medical Science degree from Midwestern University , where she was presented with an award for outstanding capstone presentation on her research of Irritable Bowel Syndrome (IBS) treatments.

Amy Liss is a certified Physician Assistant who started working with Dr. Ayub in 2017 after earning her Masters of Medical Science at Northwestern University . She joined Dr. Ayub to pursue her interest in gastroenterology and advanced endoscopy. Her main focuses include diseases of the pancreas, bile duct, and esophagus, as well as gastrointestinal malignancies.

Jessica Dakhoul is a certified Physician Assistant who earned her Masters of Medical Science degree from Midwestern University and her Bachelor of Science degree in Molecular and Cellular Biology from University of Illinois at Urbana-Champaign with a certificate in microbiology.