Patient Portal. Call: (931) 502-3700 ... 647 Dunlop Ln. | Medical Office Building One, Suite 203 Clarksville, TN 37040 (931) 502-3700 Monday - Friday: 8 a.m. - 4:30 p.m. View Map; Credentials & Education Medical School. ... Dr. Atwater is a board-certified general surgeon who earned his degree from Meharry Medical College in Nashville and ....