Aetna is a major name in the insurance industry. Founded in 1853, it is one of the oldest and largest health insurance companies in the United States. AETNA provides a wide range of health insurance plans, including individual and family plans, Medicare plans, employer-sponsored plans, and more. It also offers dental, vision, and life insurance plans. AETNA has a strong presence in the healthcare industry, with over 22 million members and a network of over 1 million healthcare providers.