There's a reason Epic Systems Corp. keeps building offices: The Verona electronic medical records company keeps signing major clients. As Epic hurtles toward the top, some are questioning whether the type of technology Epic and its rivals offer may be stifling innovation in healthcare and keeping medical costs high. On the down side, customers have complained to KLAS about Epic's "young, inexperienced staff with limited health care knowledge and ... up-front cost of the system is seen as prohibitively high for health systems with fewer financial resources." Epic does not make announcements about the clients it lands. It also doesn't disclose the cost of its systems. But recent stories in campus publications remove some of the mystery.