Lexington Diagnostic Center. 1725 Harrodsburg Road. Suite 100. Lexington, KY 40504. Hours: Monday-Friday 7AM to 8PM. Saturday 8AM to 2PM (No Walk-in X-Rays) Sunday Closed. Phone: 859-278-7226.Contact Us‧Patient Portal‧Imaging Costs‧MRI‧Meet Our Team‧About Us.