Disclosed are systems, methods, and non-transitory computer-readable enabling online access to encounter data across multiple disparate sources. The method includes providing a synchronizer application configured to access data of a practice group server, receiving, by an aggregator server, a start time and a duration of a healthcare appointment, and determining a completion time of the healthcare appointment. Based on the completion time, the aggregator server transmits a request for encounter data for the healthcare appointment to the synchronizer application and then receives and stores the encounter data in an aggregator database. The aggregator server generates an electronic alert addressed to a computing device accessible by the patient and transmits the alert to the computing device. The aggregator server receives an electronic response to the alert and provides an interactive user interface to the computing device configured to display the encounter data on the computing device.