Crozer-Keystone Health System said Wednesday that Peter Adamo has taken over as CEO of Delaware County's largest health care provider. The four-hospital system is owned by Prospect Medical, a for-profit hospital management company based in California. Adamo was previously president and CEO at Prospect's Waterbury Hospital in Waterbury, Connecticut. He is taking over the CEO job at Crozer-Keystone from Sharif Omar. Omar, who has served as Crozer-Keystone's CEO since late 2018, is relocating...