Dr. Heintzelman served in the US Army from 1992 until 2015 as an Airborne Infantry SNCO for more than 22 years of dedicated service, with decorations including the Bronze Star and the Purple Heart. Passionate about sharing his own transitional iourney, upon completion of military service John earned his doctorate in Psychology with an emphasis on PTSD and TBI.   

Dr. Heintzelman currently resides in Henderson, NV and is highly focused on highlighting and organizing veteran resources in his published book "Veterans Resource and Transition Guide: Research, Knowledge, & Resources for Your Transition Into Civilian Life and Beyond" as we as his veterans podcast "The Veteran Doctor".