A walker apparatus having a frame configured to support a user above a floor thereunder and an upper body support pivotably coupled to the frame to move between a use position and a storage position is shown. The upper body support is adapted to support the forearms of a user and includes a first pair of grip handles. A second pair of grip handles is coupled to the frame spaced apart from the first pair of grip handles. The walker apparatus has a patient measurement device coupled to the frame to measure a vital sign of the user and indicate the measurement on a display. An IV support is coupled to the frame to support a medical device. A base module is configured to hold personal belongings or medical devices. The frame includes upright segments extending from the base module. A seat has a frame member and a seat member. The frame member has a back segment and a seat segment coupled to the back segment. The seat member has a support wall, an oppositely facing wall, a front section coupled to the seat segment, and a rear section coupled to the uprights for movement about a pivot axis between a use position and a storage position. The back segment and the upright segments cooperate to limit pivotal movement of the seat when the seat is in the use position.