Alabama Adult Congenital Heart Disease Director Mark Cribbs, M.D.In the last decade, the number of adults living with congenital heart disease began exceeding the number of children living with congenital heart disease, even as treatments improved. That means more and more people are in need of adult care. “The transition from pediatric to adult care can be difficult to navigate,” said Alabama Adult Congenital Heart Disease Director Mark Cribbs, M.