In his role as vice president, Anthony Williamson has served as a key figure for Northeast Georgia Medical Center Braselton, often speaking at public gatherings and to the media about the hospital under construction in South Hall. Now, he’s the hospital’s first president. The Northeast Georgia Health System announced his promotion Thursday, saying Williamson will oversee operations at the 100-bed hospital, set to open in spring 2015 off Ga. 347 near Ga. 211 in South Hall.