Dr Hayoun is a practicing physician quadruple board certified in emergency medicine, medical toxicology, addiction medicine and as a medical review officer. He is the current associate site medical director at HCA Tristar Hendersonville Medical Center and is core faculty at the Emergency Medicine Residency Program at HCA Tristar Skyline Medical Center. In addition to multiple peer reviewed chapters and publications Dr Hayoun is an associate editor for the latest edition of Roberts and Hedges Clinical Procedures in Emergency Medicine and Acute Care. In his free time Dr Hayoun enjoys visiting distilleries in the greater Nashville area and working on his private pilots license.