Hartman's previous job was at KFAN, headquartered in St. Louis Park, Minnesota. His show aired every weekday from 2 to 4 PM. Hartman interviewed so many guests on his show, he earned the nickname "The Barbara Walters of the Fan."
Hartman was terminated by KFAN management, Clear Channel Communications, in January 2009. He was the longest-tenured remaining member of KFANs predecessor - WDGY.