If it is not resolved, please contact Mercy's Patient Advocate, 319-339-3653 or toll free 1-800-637-2942, ext. 3653. Hours: A patient advocate can be reached between 8 a.m. - 4:30 p.m., Monday through Friday. After hours, please contact the Mercy operator by dialing 339-0300 and you will be connected with an assistant director of nursing..