Full circle. That best describes Candi Constantine-Castillo's journey to her current position as the new CEO of Harlingen Medical Center. "I was on the original team when the hospital opened in 2002, so it’s really like coming home," said Constantine-Castillo, 49, who started out as the hospital's education coordinator 20 years ago. Since that time, she's served in a range of leadership capacities that have prepared her for her current position.