A native of Columbus, Ohio, he completed his undergraduate work at Wittenberg University, Springfield, Ohio, and graduated Summa Cum Laude. Dr. Mohler received his medical doctorate from Ohio State University, Columbus, Ohio, and completed a general surgery internship at Penn State University, Hershey, Pennsylvania. He completed his residency in orthopaedic surgery at University of California, San Diego and a fellowship in hand and microvascular surgery at the University of Washington, Seattle, Washington. His post fellowship position included staff surgeon for the Department of Orthopaedic Surgery at Sharp Rees-Stealy Medical Group, San Diego, California. He joined California Orthopaedic Institute in 2005.