Marion Diagnostic Center is a multidisciplinary healthcare facility which includes a Diagnostic Imaging Center and an urgent care Walk-in Clinic. We are located across from Anderson's Warehouse Furniture and the Oasis Theatre in Marion, Illinois. We offer Rapid COVID Testing appointments, with test results within 15 minutes! Urgent Care services are available without an appointment 7 days a week! We are open Monday - Friday from 8:00am to 8:00pm, and Saturday - Sunday from 9:00am to 3:00pm.