Abstract: Systems and methods provide a data viewer for hierarchical XML data storage of medical records for a medical practice group on transportable media. The data viewer creates a snap shot in time of a medical practice group's medical records and provides a user interface with a cross-referenced, indexed display of the medical records. The data viewer stores the data in an XML format, and then uses the XML format to provide an easy to use user interface, which is viewable on a variety of display devices using a web browser. In addition, the data viewer permits the user to access multiple patients' records rather than a single record. Furthermore, the data viewer can cause the data stored on the transportable medium to expire after a period of time. The data viewer provides physicians with a unique static database of medical records, which can be used for migration to a dynamic medical record database system.