
Mark A. Thierer
Interim Chief Executive Officer
Mark A. Thierer has more than 30 years of experience in the healthcare industry. He most recently served as CEO of OptumRx and oversaw all Optum pharmacy care services, including the management of pharmacy benefits, the pharmacy network, and home delivery pharmacy and specialty pharmacy programs. Prior to this role, Mark served as Chairman of the Board and CEO of Catamaran, which was one of America's largest pharmacy benefit management companies and which merged with OptumRx in 2015. Earlier on in his career, Mark served as President, CEO and Chairman of SXC Health Solutions, which merged with Catalyst Health Solutions to create Catamaran. During his time as CEO of SXC Health Solutions, the company recorded a compound annual growth rate of 50 percent and a 50-fold increase in shareholder value. Mark received a Bachelor of Science in Finance at the University of Minnesota and an M.B.A. from Nova Southeastern University.