Ronald A. Williams Ronald A. Williams is Chairman and Chief Executive Officer of Aetna Inc., a leading diversified health care benefits company with annual revenue of approximately $27.6 billion in 2007. more

Mark T. Bertolini Mark T. Bertolini is President, which includes oversight and responsibility for all businesses and service operations across Aetna's broad range of health care products. more

Troyen A. Brennan, M.D., M.P.H. Troyen A. Brennan, M.D., M.P.H., is Senior Vice President and Chief Medical Officer of Aetna Inc. more

William J. Casazza William J. Casazza is Senior Vice President and General Counsel, reporting to the Company's Chairman and CEO, Ronald A. Williams. more

Meg McCarthy Meg McCarthy is Chief Information Officer (CIO) and Senior Vice President of Procurement and Real Estate. She is responsible for all information technology services, process and performance improvement, procurement and real estate for Aetna. more

Robert M. Mead Robert Mead is Senior Vice President of Strategic Marketing and Communications. He leads a combined group that includes the Strategic Marketing, Communications and Corporate Public Involvement organizations. more

Elease E. Wright Elease E. Wright is Senior Vice President, Human Resources (HR) for Aetna Inc. In this role, she is responsible for the development of all HR strategies, and the delivery of HR services and programs. more

Joseph M. Zubretsky Joseph M. Zubretsky, Executive Vice President and Chief Financial Officer, joined Aetna, Inc. in February 2007. In this position, he leads all of the corporation's financial activities. more