Our Patient Financial Services office, located on the first floor near the front entrance, is open Monday through Thursday from 8:00 a.m. to 4:30 p.m. and Friday 8:00 a.m. to 4:00 p.m. You may leave a voice mail 24 hours a day, or send an email to billing@mdh.org. Note: When contacting us on-line, please include with your questions, the patient ....