Prior to leading GDN Holdings, Dr. Nelson served as a director of Medtronic, Inc. from 1980-2002 and was employed there as Executive Vice President from 1986-1988 and subsequently as Vice Chairman from 1988-2002. He practiced surgery from 1969-1986 at Park Nicollet Medical Center, a large multi-specialty group practice in Minneapolis, where he served as chairman, president and chief executive officer from 1975 to 1986. He was also chairman and CEO of American MedCenters, Inc., from 1984-1986. Dr. Nelson is an Emeritus Clinical Professor of Surgery at the University of Minnesota.Dr. Nelson received a B.A. degree from Harvard College in 1959, earned his Doctor of Medicine degree from the University of Minnesota in 1963, and was certified by the American Board of Surgery in 1970. He currently serves on the boards of publicly held Angiotech Pharmaceuticals, Inc.; DexCom, Inc.; and The Travelers Companies, Inc. He also serves on a number of private boards including: Carlson Companies Incorporated; Reliant Technologies, Inc., Cardiovascular Systems, Inc., Guided Delivery Systems, Inspire Medical Systems, LLC and Juva Medical along with various non-profits.He is currently Chairman of the Board of Trustees of American Public Media/Minnesota Public Radio and serves on the Johns Hopkins Medicine Board of Advisors. He is Chairman of MinuteClinic, Inc., (wholly owned subsidiary of CVS Pharmacy) and serves as Senior Advisor to CVS Pharmacy.