Thomas Harrison

Thomas Harrison is Chairman and Chief Executive Officer of Diversified Agency Services (DAS), the world's largest group of marketing services companies. A division of the Omnicom Group, DAS provides a broad range of marketing communications services including public relations, crisis management, branding, sales promotion, customer relationship management and specialty communications such as health care advertising for some of the largest global brands. With over 5000 worldwide clients, the DAS division has annual revenues of almost $5.0 billion and is the largest unit within Omnicom, itself the world's largest advertising holding company.

Harrison's multi-faceted career brought him to Omnicom in 1992 when the firm he co-founded, Harrison & Star Business Group, the most successful and rapidly growing agency in the healthcare industry at the time, was acquired. He was appointed President of DAS in 1997 and was named Chairman and Chief Executive of DAS in 1998.

Harrison serves on a number of prestigious boards. He is a member of the Executive Committee of the Montefiore Hospital and is Fellow of the New York Academy of Medicine. Harrison is board member for ePocrates, a healthcare information company and The Morgans Hotel Group. He was President of a local Westchester County School Board and Chairman and Founder of the not-for-profit education foundation in that Westchester School District. He has been honored by Long Island College Hospital, The Children's Hospital at Montefiore, The Lymphoma Research Foundation, New York City's Health and Hospital Corporation, Mt. St. Vincent's College and others. He is a frequent speaker at business forums and at universities across the U.S. on the subject of entrepreneurialism, business strategies and the "Secrets to Success." He has spoken at West Virginia University where he did his graduate research in cell biology and physiology and where Harrison was recognized with the 2006 Distinguished Alumni Award and where Harrison received an Honorary Doctorate in 2007, the highest honor an American University grants to an individual.

Dr. Harrison is the author of INSTINCT: Tapping Your Entrepreneurial DNA to Achieve Your Business Goals. Harrison has appeared on CNBC, CNNI, Bloomberg and Forbes.com discussing his book. He can be found on the Enterprise Leadership podcast as well as Forbes, Bloomberg, recently on American Management Association and other podcasts. Harrison lectures at Business Schools and Schools of Entrepreneurialism on topics discussed in INSTINCT.