Stephen B. Bonner has been Entrepreneur in Residence at the Harvard Business School since 2014. Mr. Bonner joined Cancer Treatment Centers of America (CTCA) in 1999 as President and Chief Executive Officer and served as a member of the CTCA Board from 1996 through 2015, after completing his role as CEO in 2014. A passionate advocate of patient-centric, quality-driven healthcare, he has championed putting patients in control of their own medical decisions by empowering them with comprehensive, unbiased information about their medical conditions.