In launching a new management model, Deerfield, IL-based accounting and business consulting firm Frost, Ruttenberg & Rothblatt, PC, has named Amy Mosser its first chief executive officer. In addition, James F. Schultz, CPA, CVA, has been named director of business valuation and litigation support, also a new position.Mosser, 45, has more than 20 years of experience in health care, information and government sectors in both the United States and Europe.