This document summarizes a vendor review of electronic health record (EHR) systems for physician practices. It provides an overview of the market, including the types of practices and applications available. It then ranks the top 10 vendors by the number of EHR attestations reported to ONC, with Epic having the largest market share. The document also examines "other" smaller vendors, hospital-owned practices versus independent practices, and integrated hospital/physician systems offered by various vendors like Epic, Allscripts, and Cerner.