Dr. DeWitt worked as an Emergency Department physician for two years in Greeneville, Tennesee. He subsequently went into practice in Hartwell, Georgia where his practice included obstetrics as well as general family medicine. He moved his practice to Athens in 1995. He began his solo practice in 2003, and Dr. Chisolm joined him in practice in 2006.
Dr. DeWitt has three children: Ben, an Ensign in the Navy; Betsy, a recent graduate of the University of Georgia; and Emily a student at Clemson University. His wife, Linda, is employed by Synovis, the parent company of Athens First Bank and Trust Company. Although Dr. DeWitt graduated from Clemson, he is a supporter of UGA sports in all contests (except one as he cannot bring himselt to pull against his alma mater.)