John J. York was born on December 10 in Chicago, IL.
He and his wife, Vicki, wed in 1986. They have one daughter, Schyler.
York played the lead role of Eric Cord in the TV series WEREWOLF from 1987-88.
He has appeared on DYNASTY, FAMILY TIES, VERONICA MARS, and CASTLE.
In an interview with Digest, York stated, "One thing that I really appreciate and am thankful for is that I’ve gotten to play drama, deep emotional drama, but also I got to play comedy,” while discussing his favorite thing about playing Mac on GH.