A medical information system is provided with: a medical server apparatus for providing an electronic chart for a plurality of the medical terminals for each medical-related facility; a patient server apparatus; a shared server apparatus; a plurality of medical terminals, and a patient terminal, which are included in a communication network. The patient server apparatus provides a patient participatory chart for the patient terminal in case that one patient agrees about medical announcement on the basis of announcement agreement information. The shared server apparatus provides a shared chart for at least one of the plurality of medical terminals in case that the one patient agrees about the provision on the basis of provision agreement information.