A handheld diabetes manager has a graphical user interface for displaying status of an external medical device and includes a port configured to receive a test strip and a blood glucose measurement module. The diabetes manager includes a communications module that selectively communicates via a wireless data link with an external medical device to receive status data pertaining to the operation of the external medical device, and a user interface module in data communication with the blood glucose measurement module and the communications module. The graphical user interface includes a status screen that presents data pertaining to a glucose measure determined by the blood glucose measurement module concurrently with the status data received from the external medical device, such that the status data of the external medical device is presented on the status screen only when the communication module is in data communication with the external medical device.