< PrevNext > 84. Epic Systems Verona, Wis. Share 2016 U.S.-Booked Air Volume: $53 millionMedical software developer Epic makes its debut on the CT100 list, having an estimated $53 million in U.S.-point-of-sale air bookings in 2016. Forty percent of the company's 10,000 employees travel to service many of the nation's largest health systems. Epic operates a 24/7 travel department that it views as essential to maintaining traveler happiness and retention. As an added benefit for employees, the team accommodates personal travel requests on over 20 percent of the company's 106,000 annual business trips. The travel team also offers all employees discount adventure trips for their downtime. Epic hosts software training and several large conferences at its 1,000-acre campus, attracting tens of thousands of visitors a year. Nearly 70 Madison, Wis.-area hotels provide bulk discounts for Epic visitors, and many provide complimentary shuttles to campus.