With Iowa Health's $118 million hospital and Mercy Medical Center's $100 million facility under construction in West Des Moines, leaders hope they can attract more healthcare development to the area's already strong medical foundation. Joseph LeValley, Mercy's senior vice president of planning, said population growth and shifts are driving growth in the healthcare industry. The Des Moines area alone is expected to have 115,000 more people during the next 15 years, he said.