In general, the invention provides techniques for wireless communication of medical event information between medical devices that treat a particular patient. In general, medical event information describes the condition and treatment of a patient. A medical device may detect another medical device via a wireless communications medium, and establish a local wireless communication session the other device in order to receive medical event information stored by the other device for a patient. The wireless communications medium may be a radio frequency communications medium, and the medical devices may establish a local wireless communication session according to any of a number of local wireless data communication standards. The medical event information received from the other medical device may be used to select a therapy, or to generate a report or patient chart detailing the condition and treatment of the patient.