Operating acute care hospitals, behavioral health facilities, outpatient facilities and ambulatory care access points, an insurance offering, a physician network and various related services located all over the U.S. States, Washington, D.C., Puerto Rico and the United Kingdom. Responsibilities Registered Nurse (RN) - Emergency Department (ED) Full-time, Day position located at Corona Regional Medical Center in Corona, CA Sign-On Bonus The tradition of caring that culminated in the establishment of Corona Regional Medical Center began in 1965, with the founding of Corona Community Hospital.