Known best for his recurring role as Dr. Paul Grady on the NBC series ER, McKinney also appeared on Friday Night Lights, Supernatural, CSI and Once Upon a Time.
Early in his acting career, he appeared in two episodes of The Brotherhood of Poland, New Hampshire.
By early 2015, he had close to twenty thousand Twitter followers.
A native of Houston, Texas, he later lived and worked in Los Angeles, California. He and his wife Kristin welcomed their daughter Vivienne James on September 4, 2016.
He and pop singer Justin Bieber both played small roles in the 2014 Selena Gomez and Nat Wolff comedy feature Behaving Badly.