He's a pioneer physician who co-founded a highly regarded medical device company. She's a philanthropist who fancies furs, collects contemporary art and sits on the board of the Pittsburgh Opera. Dr. Mark Wholey and his wife, Roseanne, a power couple from Fox Chapel and a fixture in Pittsburgh's social scene, are embroiled in a lawsuit against Mark Wholey's former employer, health giant UPMC. Roseanne Wholey, who brought the suit, contends UPMC and a cardiology office overbil