He graduated from Webster University with a B.A. in drama and soon began touring with the National Players company in Washington D.C. From the mid- to late-1970s, Gilvezan appeared in plays in summer stock, children's theater and dinner theater.
He graduated from Webster University with a B.A. in drama and later earned a Master's degree from The Catholic University of America. Soon afterwards he began touring with the National Players company in Washington D.C. From the mid-to-late 1970s, he appeared in plays in summer stock, children's theater and dinner theater.