He attended Mirabeau B. Lamar High School in Arlington, Texas and the University of Texas in Austin, Texas, where he received a communications degree and was one of only twenty students in the film department"s intensive Production Sequence.
He is best known for his soap opera roles as Billy Abbott on Columbia Broadcasting System Daytime"s The Young and the Restless and Jason Morgan on American Broadcasting Company Daytime"s General Hospital. As a child, Miller spent five years as a patient of Texas Scottish Rite Hospital for Children, an organization he now supports. After graduating from college, Miller moved out to Los Angeles where he began working in the mail room of Industry Entertainment.
His first break into acting came after he signed on with the Wilhelmina modeling agency.
He appeared in six commercials, including two for Electronic Arts" The Sims. He also did commercials for JCPenney, Pizza Hut and pokerparty.com.
At the age of 24, Miller screen-tested for the Columbia Broadcasting System Daytime soap opera As the World Turns, but due to bad management, he lost the audition, and subsequently the management and agency. He took a two-year hiatus from acting after that experience.
In 2006, Miller returned to acting, starring in an episode of Computer Society of India: New New York His first appearance on-screen was August 30, 2007.
When news of the character"s demise broke in August 2008, Miller began the audition process again. Miller"s last appearance as Richie Novak on All My Children coincided with his first appearance as Billy Abbott on The Young and the Restless on September 19, 2008. He became the fourth contract actor to fill the role, a role that had been met with varying degrees of success in its three previous attempts to recast the part.
In 2011, he was nominated a second time in the Outstanding Supporting Actor category for the same role.
Miller also appears, as himself, in an independent film titled "Remembering Nigel"", which premiered at the Paso Robles Digital Film Festival on November 25, 2009. In August 2012, it was confirmed that Miller would be appearing in primetime as a recurring cast member on the CW Network’s thriller Ringer.
Miller was also cast as Gabe Watson in the Lifetime made-for-television movie, Fatal Honeymoon. On September 2, 2014, General Hospital executive producer Frank Valentini announced on Twitter that Miller would join the cast as Jason Morgan.