Abby Usen received her B.S. in Food and Nutrition Sciences and Dietetics from the University of Vermont. She completed her dietetic internship at the Frances Stern Nutrition Center and received her M.S .from the Friedman School of Nutrition Science and Policy at Tufts University. Since gradating from Tufts, she worked as a clinical dietitian/clinical nutrition manager at the Massachusetts Hospital School in Canton, Ma where she specialized in nutrition for children and adolescents with developmental disabilities. Most recently she has been an outpatient dietitian specializing in Pediatric Gastroenterology at Floating Hospital for Children at Tufts Medical Center. A great portion of her time is specifically working with patients with failure to thrive, gastrointestinal dysmotility and mitochondrial disease. She also spent 3 years working with patients having Inborn Errors of Metabolism and is the current Chair, of the Massachusetts Pediatric Practice Group.