Dr. Guinn is a graduate of Jonesboro High School. He returned to Jonesboro in 2002 after completion of his residency. He then served in the United States Army in Iraq as a Combat Surgeon in the 1st Forward Surgical Team most of 2003. He again deployed under Operation Iraqi Freedom/Operation Enduring Freedom in 2006. He is also a member of the Jonesboro Police Department SWAT team, where he serves as Medical Director and a Tactical Medic. He has lectured widely on Tactical Medicine and Combat Surgery, and assists with the education program for the Arkansas State Police, Craighead County Sheriff, and the Paragould SWAT team.
Outside of work, he is active in cycling, hiking, mountaineering, yoga and running. He and his wife have three daughters, and they are members of St. Marks’s Episcopal Church.