Dennis is one of the nation’s leading authorities in the rapidly changing business of dentistry. Prior to Joining Fortune, Dennis acquired extensive business experience as a serial entrepreneur and through diverse positions in Fortune 50 financial firms. He has served as a Vice President of Dean Witter Reynolds, a Principal of the New York Stock Exchange, a Senior Vice President for American Express, the CEO of Tilt Inc., the Co-organizer of TEDx Seattle, and the Founder and CEO of the Inspirit Leadership Group.