Robert Wilson, age 74, is Chairman of Mevion Medical Systems, Inc. (formerly Still River Systems), a medical device company. Robert Wilson was Chairman of Caxton Health Holdings, LLC, a healthcare-focused investment firm, from 2004 through 2007, and was Vice Chairman of the board of directors of Johnson & Johnson, a manufacturer of health care products, from 1989 until 2003.Robert Wilson joined Johnson & Johnson in 1964. Robert Wilson is a director of Hess Corporation, an integrated oil and gas company, and Synta Pharmaceuticals Corporation, a bio-pharmaceutical company.