Dr. Marriott joined Cedarville University EMS in 1982 starting as an EMT and became a Paramedic in 1984. He received his B.A. from Cedarville University in 1985, his M.D. in 1991 from Wright State University and completed his residency in emergency medicine in 1994. Since 1994 Dr. Marriott is an ER attending at Miami Valley Hospital. Additionally, he is the EMS Medical Director Dayton Fire Department, Dayton Metropolitan Medical, Miami Valley Fire District, Riverside Fire Department and Bellbrook Fire Department. He is the chair of the Regional Physician Advisory Board for EMS, Ohio Region 1. He received the Excellence in EMS Award from Wright State University Department of Emergency Medicine and the Greater Miami Valley EMS Council in 1994 and was named the Ohio EMS Medical Director of the Year in 2011 by the Ohio Department of Public Safety, Division of EMS.