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.

Laura Atkinson is a board certified Nurse Practitioner, who earned her Masters of Nursing degree from Chamberlain University, and her Bachelors of Nursing from Indiana Wesleyan University. Prior to becoming a Nurse Practitioner, Laura was a Registered Nurse for 8 years in the Surgical Trauma ICU at Christ Medical Center. With her personal and professional experiences, she sees value and importance of patient education and advocacy to support their daily healthcare needs.

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.

Anna Pfeiffer is a certified Physician Assistant and the newest member of our practice. She earned her Master of Science in Medicine from Western Michigan University and her Bachelor of Science in Health Sciences from the University of Missouri–Columbia. Anna has a strong interest in advanced endoscopy and the management of gastrointestinal diseases.