Meet the LSU Pediatric Gastroenterology Staff


Paul Hyman, MD

Dr. Hyman received an M.D. from the University of Connecticut and completed fellowships at both the Digestive Disease Branch of the NIH and UCLA. Prior to coming to LSU and Children’s Hospital in New Orleans he was Chief of Pediatric Gastroenterology at Kansas University Medical Center and at UCLA. Dr. Hyman also served as the Director of the Pediatric Gastrointestinal Motility Center at the Children's Hospital of Orange County. He is an avid researcher with many publications, several of which discuss children with feeding issues. He is interested in the “brain-gut” connection, creating novel approaches to comfort affected children and their families. He is the current division head.


Dedrick Earl Moulton, MD

Dr. Moulton is the incoming division head of the section of Pediatric Gastroenterology. He received is M.D. from the University of South Carolina, then completed his pediatric residency at Richland Memorial Hospital. He continued his training in pediatric gastroenterology at Washington University School of Medicine in St. Louis. He has most recently served as the program director of Pediatric Inflammatory Disease program at Vanderbilt University School of Medicine. His research interests including inflammatory bowel disease, eosinophilic esophagitis and gastroesophageal reflux.


Raynorda F. Brown, MD

Dr. Raynorda Brown serves on the faculty at LSU Health New Orleans as an Associate Professor of Clinical Pediatrics Division of Gastroenterology. She received her medical degree from the University of Pittsburgh School of Medicine. She then completed her residency training at University Hospitals of Cleveland Rainbow Babies & Children’s Hospitals and Cleveland Metropolitan General Hospital in Cleveland, Ohio. She completed two Fellowships, one in Pediatrics at University Hospitals of Cleveland Rainbow Babies & Children’s Hospitals and Cleveland Metropolitan General Hospital and the other in Pediatric Gastroenterology at LSU Health New Orleans. When asked why she continues to practice medicine, Dr. Brown said, “I believe that caring for babies, children and adolescents is caring for the future generations. My legacy is the patients that I have been given the privilege to care for.” Dr. Brown is currently out on leave.


Brent Keith, MD

Dr. Keith received his M.D. from the Ross University School of Medicine then completed his residency in pediatrics at University of Texas Southwestern. He then joined the LSU Pediatric Gastroenterology fellowship. Dr. Keith has a wide variety of clinical interests including complex patients who are g-tube dependent with feeding difficulties and with inflammatory bowel disease. Dr. Keith enjoys teaching medical students, residents and fellows and teaches a course in clinical practice to first- and second-year medical students. He serves as the fellowship program director.


Elizabeth Alonso-Rubiano, MD

Dr. Elizabeth Alonso specializes in Pediatric Gastroenterology at Children’s Hospital. With more than 17 years of experience, she is certified by the American Board of Pediatrics and is an Assistant Professor of Clinical Pediatrics and Gastroenterology at LSU Health New Orleans School of Medicine. Dr. Alonso earned her medical degree at the Universidad Libre in Bogota, Columbia. She then completed her residency training at both Tulane University Medical Center and LSU Health New Orleans. Her clinical interests include inflammatory bowel disease. On why she chose to practice pediatric gastroenterology, Dr. Alonso stated, “Of the variety of gastroenterology pathology that kids have from reflux to Crohns, it is important to me to help the kids and the family to understand the problem and how to improve it.”


Colleen LeBlanc, MD

Dr. LeBlanc received her M.D. from Louisiana State University in Shreveport prior to completing her residency in pediatrics at Children’s National in Washington, D.C. She recently completed her pediatric gastroenterology fellowship at Vanderbilt University and just joined the LSU Pediatric Gastroenterology Department this summer. During her fellowship she researched congenital diarrhea disorders. She also has a clinical interest in inflammatory bowel disease.