JACKSONVILLE, Fla.--(BUSINESS WIRE)--PSS World Medical, Inc. (NASDAQ GS:PSSI) announced today that it has made a $22.5 million equity investment, approximately 5% of current outstanding shares, in athenahealth, Inc., a leading provider of internet-based healthcare information technology and business services to physician practices. The Company purchased shares of the Watertown, Massachusetts-based athenahealth, Inc. from existing shareholders. Additionally, the Company’s Physician Business, Physician Sales & Service, has entered into a two-year exclusive distribution agreement with athenahealth, Inc. to market its web-based practice management, billing and electronic medical record (EMR) solutions to the U.S. physician market. athenahealth will also provide enhanced product and customer support services to the Company’s physician customers. Future product developments are expected to integrate customer ordering and inventory management functionality into athenahealth’s existing service offering.