Kirby Medical Group - Monticello Directions Address: 1000 Medical Center Drive Monticello, IL 61856 Phone: 217.762.6241 Hours of Operation: Monday - 7am - 7pm Tueday - 7am - 7pm Wednesday - 7am - 6pm Thursday 7am - 7pm Friday 7am - 4pm Saturday 8am - noon, walk-in clinic only. Our Expansion is Complete. Tour the Facility.