Doctor Tolosa is a native of Chile, did his medical school training in the Dominican Republic and his pediatric residency in Orlando Fl. He joined the military as a general pediatrician for four years, after which he did his fellowship in Pediatric Gastroenterology at Walter Reed Army Medical Center in Washington DC. He has over thirty years of experience in pediatrics and over twenty five years of experience in pediatric gastroenterology. He has been in the Chattanooga area for the last twenty years. He is interested in all aspects of the pediatric gastroenterology field, and his personal interests include traveling, languages, hiking and reading.