 In 1996, he was the division president of the firm's Texas, Florida, and Puerto Rico operations, before becoming CEO of Humana in February 2000.With a total compensation of $14.13 million in 2010, McCallister ranked 66th on the Forbes executive pay list.McCallister serves on the boards of directors of AT&T Inc., a role he has been in since February 2013, and Syracuse University's Institute for Veterans and Military Families.