Sparks served in Missouri, Colorado and Illinois and was received into the Episcopal Churchin 1989. Sparks became Rector of Street Luke"s in Whitewater, Wisconsin in 1990. A post he held until 1995.
After a further incumbency at Street Matthias in Waukesha, Wisconsin, he spent eighteen months serving as Dean of Saint Paul"s Cathedral in Wellington, New Zealand.
On February 6, 2016, he became bishop-elect for the Episcopal Diocese of Northern Indiana.