Phillip Baines, age 44, was last seen at around 4.45am on Monday 1 February 2021 at Fairfield Hospital on Rochdale Old Road in Bury.
He is described as white, around 5ft 6ins and of a slim build with light facial hair. Philip was last seen wearing a black super dry bobble hat, a blue hoody, a red parker coat and blue tracksuit bottoms with black trainers.
Officers are becoming increasingly concerned about Philip and want to make sure he is safe and well.
Anyone with information about Philip Baines whereabouts should contact police on 101.