1. A method for distributing medical information stored on a computer system, the method comprising: at a server in the computer system: identifying a group of one or more physicians to receive customized medical information; generating an interactive message comprising said customized medical information and objects that the one or more physicians in the group can select to respond to, or dispose of, the interactive message; receiving, at the server, a signal from a respective handheld computing device operated by a respective physician of the group, wherein the signal indicates an availability of the respective handheld computing device for receipt of the interactive message; and in response to the signal, automatically transmitting the interactive message from the computer system to the respective handheld computing device.