East Tennessee Children’s Hospital is pleased to welcome four new physicians to our group of experts. Marielisa Rincon, M.D., M.Ed. joins the Pediatric Endocrinology Department. David E. Hill, M.D., F.AAP and Rhys Irvine, M.D. will join the University Pediatric Urology group. And Diana Quintero, M.D. will join Pediatric Pulmonology and Respiratory Care.