Raised in Palatine, Illinois, his earliest screen-acting credit was in the 1986 PBS telefilm Under the Biltmore Clock.
He also appeared in the movies Straight Talk (1992) and Rookie of the Year (1993), and video games like Lego Dimensions (2015).
The pilot was entered in the 2006 ITVFest (Independent Television Festival) where Gegenhuber won the Best Directing Award.
A longtime teacher of the improvisation techniques of Viola Spolin, Gegenhuber became Education Coordinator for The Open Fist Theatre Company in Los Angeles, California in 2007.
He also holds a degree in Graphic Arts (drawing, painting, and sculpture), and is a Le Cordon Bleu Chef and food writer.