Mark Dobies (born April 3, 1959 in Philadelphia, Pennsylvania) is an American actor. Dobies formerly portrayed district attorney and murderer Daniel Colson on the ABC soap opera One Life to Live from July 1, 2003 until June 15, 2005. Previously, he briefly played Dr. Noah Chase on CBS soap Guiding Light from 2000 to 2001. He has three children named Francessca, Olivia, and Robert.