Story County Medical Center's board of trustees has selected Timothy Ahlers as the medical center's new CEO. Ahlers has spent the past several years in leadership positions at Mercy Hospital in Iowa City, most recently as vice president of marketing and business development. He earned his bachelor and master of business administration degrees, as well as a master of health administration, from the University of Iowa.  Tom Mulrooney, interim CEO, will continue to serve in that role until Ahlers begins the job in early September. Ahlers will be moving to Story County from Iowa City with his wife, Kate, and their three young children.