1500 Dixon St Ste 202 Fredericksburg VA 22401. Waring Trible Jr Md. 1995 Jefferson Davis Hwy Ste 100 Fredericksburg VA 22401. Riverside Gastroenterology Specialists. 659 HOSPITAL RD TAPPAHANNOCK VA 22560. Select your waiting time. < 10 mins 10-15 mins 16-30 mins 31-45 mins > 45 mins. Office cleanliness. Courteous staff..