Proactively Helping Clients Achieve Better Results. TDT CPAS and Advisors Visit us at tdtpc.com 2109 W Jefferson Ave. Fairfield, IA 52556 641.472.6171 Proactively Helping Clients Achieve Better Results. TDT CPAS and Advisors Visit us at tdtpc.com 2109 W Jefferson Ave. Fairfield, IA 52556 641.472.6171