The New York native moved from Chicago in 1994 to try to get his big break, which occurred when he landed the recurring role on The Drew Carey Show (1995).
An alumnus of Chicago's ImprovOlympic improvisation troupe. Fellow members include the late Chris Farley, Jon Favreau, Pat Finn, Tim Meadows and Rachel Dratch.
Of Russian Jewish and Puerto Rican descent. He converted to the Greek Orthodox faith when he married Nia Vardalos.
Married to actress Nia Vardalos.
Was the model for the "Ian Miller" (John Corbett) character in My Big Fat Greek Wedding (2002), which was written by his wife, Nia Vardalos.
His wife, Nia Vardalos, made a guest appearance as the wife of his character on The Drew Carey Show: Strange Bedfellows (1997).
Ian and Nia adopted a toddler daughter in 2008.