ARLINGTON, Va.--(BUSINESS WIRE)--CACI International Inc (NYSE:CACI) will demonstrate solutions for modernizing healthcare systems, informing medical decisions, and improving patient outcomes at the Healthcare Information and Management Systems Society (HIMSS) Annual Conference & Exhibition on April 12-16, 2015 at McCormick Place in Chicago, Ill. This industry-leading conference brings together more than 38,000 healthcare IT professionals, clinicians, executives, and vendors from around the