Abstract: A system for facilitating commercial exchange of packages of electronic health records, including practice nodes in communication with one another via a peer to peer network, each practice node having a plurality of electronic medical records including medical data and patient identification data, a digital marketplace server including software for receiving a query for medical data from a user and identifying practice nodes having the medical data responsive to the query, software executing on the practice nodes for generating summaries of the medical data responsive to the query, blinding the summaries and transferring the blinded summaries to the digital marketplace server, software executing on the server for displaying the blinded summaries and receiving an order for the medical data described in the blinded summaries, and software executing on the practice nodes for blinding electronic medical records containing the ordered medical data and transferring the blinded medical data to the user.

Abstract: An apparatus having encoded instructions in a computer hardware circuit which combine digital data templates with patient digital data of selected patients from medical practice electronic health records to provide digital data packages in which patient digital data is mapped to data fields in the digital data packages. The digital data packages have a structure and format defined by the digital data templates. The patient digital data comprises one or more of blinded patient data and non-blinded patient data.