Mark Thierer

Biography

Mark Thierer is a lifelong leader in the healthcare space with more than 30 years of experience leading organizations to financial and operational success in the healthcare system. As Chief Executive Officer, he leads EVERSANA’s vision to accelerate the industry’s shift to patient-centered, value-based care – creating a healthier world for all. He is also the founder of Waltz Health with his son, Jonathon Thierer, which merged with EVERSANA in August 2025.

Most recently Mark served as CEO of OptumRx, overseeing all Optum pharmacy care services, including the management of pharmacy benefits, pharmacy network, homedelivery pharmacy and specialty pharmacy programs. Prior to OptumRx, Mark served as the Chairman of the Board and CEO of Catamaran (NASDAQ: CTRX), one of the nation’s largest pharmacy benefit management companies serving 35 million lives. Catamaran was acquired by United Healthcare in 2015 and combined with OptumRx. Earlier 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 posted a compound annual growth rate of 50 percent and had a 50-fold increase in shareholder value. Prior to this, Mark led Physicians Interactive, a division of Allscripts Healthcare Solutions, Inc., as President. He spent 10 years with CaremarkRx (now CVS Caremark) as a Corporate Officer and Senior Vice President, Industry Relations. Before joining Caremark, he spent 10 years at IBM in various sales management positions in its health industry division.

Mark holds a Bachelor of Science degree in Finance from the University of Minnesota, a Master’s in Business Administration from Nova Southeastern University and has earned the Certified Employee Benefits Specialist (CEBS) designation.