Gastroenterologists, Hepatologists & Nutritionists
The following physicians and advanced practice nurses specialize in treating children with disorders that affect digestion and nutrition. Please note that not all of our specialists are available at every location. Select their names to learn more about their special interest areas and locations.


Estella M. Alonso, MD
Medical Director, The Siragusa Transplantation Center; Sally Burnett Searle Professorship in Pediatric Transplantation

Valeria C. Cohran, MD
Medical Director, Intestinal Rehabilitation and Transplantation; Attending Physician, Gastroenterology

Lee M. Bass, MD
Clinical Practice Director and Director of Endoscopy, Gastroenterology, Hepatology and Nutrition


Catherine A. Chapin, MD
Medical Director, Hepatology & Liver Transplant; Attending Physician, Gastroenterology, Hepatology & Nutrition

Bonnie S. Essner, PhD
Pediatric Psychologist, The Pritzker Department of Psychiatry and Behavioral Health

Mark H. Fishbein, MD
Attending Physician, Gastroenterology, Hepatology and Nutrition; Medical Director, Pediatric Feeding and Swallowing Disorder Program; Medical Director, Non-Alcoholic Steatohepatitis (Fatty Liver Disease) Program

John E. Fortunato, Jr, MD
Director, Neurointestinal & Motility Program; Attending Physician, Gastroenterology, Hepatology and Nutrition





Batul Kaj-Carbaidwala, MD
Attending Physician, Gastroenterology, Hepatology & Nutrition

Corie M. Klepper, MD, MS
Attending Physician, Gastroenterology, Hepatology and Nutrition

Alyssa A. Kriegermeier, MD
Attending Physician, Gastroenterology, Hepatology and Nutrition


Suzanne P. Nelson, MD, MPH
Attending Physician, Gastroenterology, Hepatology & Nutrition



Lauren Potthoff, PhD
Pediatric Psychologist, The Pritzker Department of Psychiatry and Behavioral Health


Joshua D. Prozialeck, MD, MSA
Attending Physician, Gastroenterology, Hepatology and Nutrition



Jennifer A. Strople, MD
Attending Physician, Gastroenterology, Hepatology and Nutrition

Melissa Talley, RD, LDN, CNSC
Registered Dietitian, Gastroenterology, Hepatology and Nutrition


Joshua B. Wechsler, MD, MSCI
Medical Director, Eosinophilic Gastrointestinal Diseases Program; Attending Physician, Gastroenterology, Hepatology and Nutrition; CURED (Campaign Urging Research for Eosinophilic Disease) Foundation Research Scholar

Bridget A. Whitehead, MD
Attending Physician, Gastroenterology, Hepatology and Nutrition

Beata Borawski, MSN, APRN-NP, CPNP
Pediatric Nurse Practitioner, Inflammatory Bowel Disease

Susan Buck, APRN-NP, PNP
Pediatric Nurse Practitioner, Gastroenterology, Hepatology and Nutrition

Maria Manuel-Rubio, MSN, APRN-NP, CPNP
Pediatric Nurse Practitioner, Gastroenterology, Hepatology and Nutrition

Emily Santolin, APRN-NP, CPNP-PC
Pediatric Nurse Practitioner, Gastroenterology, Hepatology & Nutrition

Melissa C. Semp, APRN-NP
Family Nurse Practitioner, Gastroenterology, Hepatology & Nutrition

Melanie H. Shea, MSPAS, PA-C
Physician Assistant, Gastroenterology, Hepatology & Nutrition

Julie K. Shotwell, APRN-NP
Pediatric Nurse Practitioner, Gastroenterology, Hepatology & Nutrition

Truc Vo, APRN-NP
Pediatric Nurse Practitioner, Gastroenterology, Hepatology and Nutrition


