There is a potential to reduce medication errors by supporting the use of medication reconciliation through electronic Personal Health Records. The lead user method was used to identify specific goals and activities that are required to have in an electronic medication reconciliation tool and to provide a synthesized visual design that would reflect these requirements. Lead users identified two major functionalities of a proposed medication reconciliation tool: ability to view and edit certain medication information when reconciling medication lists and share most current, reconciled medication lists with selected providers.