According to some aspects of the present disclosure a method for presenting a GUI for modifying medical data on a handheld medical device is disclosed. The method includes determining a correction bolus amount and a meal bolus amount for the patient. The method also includes presenting the GUI on a display of the medical device and presenting the correction bolus amount, the meal bolus amount and a total bolus amount in the GUI. The method also includes presenting a correction bolus amount modification field and a meal bolus amount field in the GUI. The correction bolus amount modification field and the meal bolus amount modification field allow the patient to provide input to modify the correction bolus amount and meal bolus amount, respectively. The method further includes receiving the input and generating an advice history record based on the input.