After serving as her vacancy pastor in 2005, Pastor Koschmann returned to Concordia Lutheran Church-School-Preschool as her Assistant-to-the Pastor in 2007. His main duties include preaching, teaching adult classes, and visiting the sick and home bound.
His full-time parish is Immanuel Lutheran in Riverton, where he has served since 1987. Since 2010, he has served as the "Pastor Pro-Tempore" at Holy Trinity Lutheran Church, a historically black congregation on Springfield's East end. He also holds a weekly Bible Class at Concordia Village in Springfield and leads the Sunday Vesper service at the Village on a rotation basis.