Aetna is one of the United States leaders in health care, dental, pharmacy, group life, disability, and long-term care insurance and employee benefits. The company s membership includes nearly 15.5 million medical members, more than 13 million dental members, approximately 10 million pharmacy members and 13 million group insurance members. Its heath care network consists of more than 735,000 health care professionals approximately 438,000 primary care doctors and specialists nearly 4,375 hospitals and Aexcel, a network of specialist physicians based on clinical performance and cost efficiency. Aetna offers an array of programs and services that help control rising employee benefits costs while striving to improve the quality of health care, such as case management; disease management and patient safety programs; and integrated medical, dental, pharmaceutical, behavioral health and disability information. Aetna has a location in Cambridge, Mass.