Dr. Deitz, Vice-President and National Medical Director for Liberty Mutual Insurance Group, is responsible for medical review operations and medical policy for Liberty Mutual's workers' compensation business nationwide. At Liberty Mutual, he oversees a staff of regional medical directors and is also responsible for iCaseManager, Liberty's electronic clinical claims support tool. He is board-certified in internal medicine and has practiced both emergency and internal medicine. Dr. Deitz is one of the Board's physician representatives. 

A graduate of the University of Miami School of Medicine, Dr. Deitz completed post-graduate training at Miami and Harvard Medical School, and has 20 years experience in managed medical care, guideline development, healthcare outcome evaluation and reporting, and utilization management systems in both workers' compensation and group health.