His first public appearance was in 1968 as a child guest on the Art Linkletter House Party television program.
Sheppard was graduated Verdugo Hills High School (1977( where he appeared in numerous plays.
He was a member of the exclusive Los Angeles City College Theatre Department and Academy program (Associate of Arts in Theater, 1979).
In 1987 Sheppard was the Sysop of The Ledge PCBoard, a Bulletin Board System, and ran it for ten years.
After his father's death in 1995, Sheppard left acting to manage SDC Convention Services.