Chris Carmack (born December 22 1980 or 1981) is an American actor, singer, and former fashion model. He is known for his roles in three popular television shows—the teen drama series The O.C. (2003–2004) as Luke Ward, the country music drama Nashville as Will Lexington (2012–2018), and the medical drama Grey's Anatomy (2018–present) as Dr. Atticus Lincoln. Wikipedia