Robert G. Norton, president and CEO of North Shore Medical Center in Salem, became chairman of the Massachusetts Hospital Association's board of trustees today, the group said.

Norton came to the Partners HealthCare hospital from Shands Jacksonville Medical Center in Florida after being executive vice president at Beth Israel Deaconess Medical Center.

Other MHA officers are Winchester Hospital president and CEO Dale M. Lodge, chairman elect; Tufts-New England Medical Center president and CEO Ellen M. Zane, treasurer; and Cambridge Health Alliance president and CEO Dennis Keefe, secretary.