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

In this role, Dr. Brennan provides oversight for the development of Aetna's clinical policies, as well as Aetna's full range of clinical operations, disease management programs and patient management services.

Prior to joining Aetna, Dr. Brennan served as president and CEO of Brigham and Women's Physician's Organization from 2000-2006.

In his academic work, he has served as professor of medicine at Harvard Medical School since 1995, and professor of law and public health at Harvard School of Public Health since 1992.

Dr. Brennan received his M.D. and M.P.H. degrees from Yale Medical School, his J.D. degree from Yale Law School. He completed his internship and residency in internal medicine at Massachusetts General Hospital. He is a member of the Institute of Medicine of the National Academy of Sciences.