Primary Job Title President and Chief Executive Officer Primary Organization 
Patterson Companies
Location Greater Minneapolis-Saint Paul Area, United States, North America Gender Male
LinkedIn View on LinkedIn
Mark S. Walchirk has been Chief Executive Officer and President of Patterson Companies, since November 20, 2017. Mr. Walchirk served as the President of U.S. Pharmaceutical at McKesson Corporation since September 24, 2012. Mr. Walchirk served as the President of Mckesson Specialty Care Solutions of McKesson Corporation since September 2009. He
served as Senior Vice President and Chief Operating Officer, at McKesson U.S. Pharmaceutical. He attended the University of Illinois Urbana-Champaign.
