Gregory Simone, MD, is a cardiologist but also a businessman with an MBA and chief executive officer of the Georgia-based WellStar Health System and its many satellite facilities. WellStar has 280 doctors in its physicians group, and a total of 1,100 who have medical staff privileges. The system has 1,311 beds and more than 11,000 employees—making it one of the largest healthcare providers in Georgia. Simone took over as the big boss of the system in 2007, six months after the death of his best friend, Robert Lipson, MD.