Robert Walter is the founder of Cardinal Health, Inc., a company that provides products and services supporting the health care industry. Walter retired from Cardinal Health in June 2008. Prior to his retirement from Cardinal Health, he served as Executive Director from November 2007 to June 2008. From April 2006 to November 2007, he served as Executive Chairman of the Board of Cardinal Health. From 1979 to April 2006, he served as Chairman and Chief Executive Officer of Cardinal Health. Walter also serves as a director of American Express Company and Nordstrom, Inc. From 2000 to 2007, he was a director of CBS Corporation and its predecessor, Viacom, Inc.