Marsh & McLennan Cos., an $11.5 billion global professional services firm, named J. Michael Bischoff CFO. He succeeds Vanessa Wittman, who left to become CFO and senior vice president at Motorola Mobility, a unit of Google. Bischoff, 64, pictured at right, has served as MMC’s interim CFO since March. Previously he was responsible for leading MMC’s corporate development, mergers and acquisitions, treasury and investor relations units. Bischoff joined the company in 1982.