A strong proponent of giving back, Tullman has served as Chancellor on the International Board of the Juvenile Diabetes Research Foundation (JDRF) as well as advocating on behalf of many worthy causes. Currently CEO of fast-growing diabetes management company Livongo, his family foundation has contributed more than $10 million to healthcare, educational and inner-city diversity programs. As a serial entrepreneur, Tullman has created thousands of jobs and served as a mentor and role model to many, both as a business person and civic leader.