Founded in 1850, Aetna is one of the world s leading health care benefits companies. It offers a range of traditional and customized health insurance products and related services, including medical, pharmacy, dental, behavioral health, group life, long-term care and disability plans and medical management capabilities. Its customers include employer groups, individuals, college students, part-time and hourly workers, health plans and government-sponsored plans. The company primarily operates in three segments, including health care, group insurance and large case pensions. Aetna also provides specialty products, such as medical management and data analytics services, behavioral health plans and stop loss insurance, as well as products that provide access to its provider networks in select markets. Headquartered in Hartford, Conn., the company has more than 34,000 employees. It maintains a presence in Fresno, Calif.