Pediatric GI/Hepatology/Nutrition Fellowship


Jean P. Molleston, M.D.

Jean P. Molleston, M.D. Professor of Clinical Pediatrics
Section Director, Pediatric Gastroenterology, Hepatology and Nutrition

Dr. Molleston has directed the Division of Pediatric Gastroenterology, Hepatology, and Nutrition since 2005.   This Section of the Department of Pediatrics includes 12 attending physicians, 5 fellows, and 4 nurse practitioners. Dr. Molleston is a pediatric hepatologist (CAQ from the Board of Pediatrics) and transplant physician.

Her clinical interests include fatty liver (NASH), cholestatic liver disease, metabolic liver disease, CF-related liver disease and viral hepatitis in addition to general gastroenterology.  Dr. Molleston has a long interest in medical education and has received multiple teaching awards.   She was previously an associate residency program director and has conducted many faculty development programs in the Department of Pediatrics.  She has been instrumental in the development of reading materials for parents of children with GI illnesses.

Marian D. Pfefferkorn, M.D.

Marian D. Pfefferkorn, M.D. Professor of Clinical Pediatrics
Director, Pediatric Gastroenterology Fellowship Training Program

Dr. Pfefferkorn is the Director of the Fellowship Training Program for the Section of Pediatric Gastroenterology, Hepatology and Nutrition.  She is interested in clinical research and has several investigator-initiated research awards.  She also collaborates with colleagues within the Division, with other subspecialties and with pediatric centers nationally and internationally on studies involving celiac disease, reflux esophagitis, eosinophilic esophagitis, and constipation/encopresis.   In recent years, she has focused on inflammatory bowel disease research, including epidemiology, diagnostics and therapeutics.  She speaks on IBD frequently to patient families through the local chapter of the Crohn's and Colitis Foundation and the Riley Hospital IBD Support Group.