Dr. Dunbar graduated from UT Southwestern Medical School. She completed her internal medicine residency at Johns Hopkins University in Baltimore, Maryland and was selected to be an Assistant Chief of Service for the program.  Her gastroenterology and hepatology fellowship was also at Johns Hopkins, where she completed a PhD in clinical investigation.  Her research and clinical expertise includes Barrett’s esophagus, gastroesophageal reflux disease, esophageal motility disorders, and novel endoscopic imaging technologies.