Aetna Inc. (ˈɛtnə) is an American managed health care company that sells traditional and consumer directed health care insurance and related services, such as medical, pharmaceutical, dental, behavioral health, long-term care, and disability plans, primarily through employer-paid (fully or partly) insurance and benefit programs, and through Medicare. Since November 28, 2018, the company has been a subsidiary of CVS Health. The company's network includes 22.1 million medical members, 12.7 million dental members, 13.1 million pharmacy benefit management services members, 1.2 million health-care professionals, over 690,000 primary care doctors and specialists, and over 5,700 hospitals. Aetna is descended from Aetna (Fire) Insurance Company of Hartford, Connecticut. The name of the company is based on Mount Etna, at the time the most active volcano in Europe. 1819: Thomas Kimberly Brace becomes the principle founder and developer of the Aetna (Fire) Insurance Company, established in Hartford. Brace served as the company's first President (and would remain on the Board of Directors until his death in 1860). Henry Leavitt Ellsworth, Yale graduate and attorney, became the second president of Aetna (Fire) Insurance Company, succeeding Thomas Kimberly Brace. Ellsworth, who later became the first U.S. Patent Commissioner, served as Aetna's president until 1821, when he resigned. He continued as a director at the company for another 16 years. Ellsworth's brother, William Wolcott Ellsworth, also served as a director, as well as the company's first general counsel. 1820: Brace authored the rewriting of the company Charter allowing Aetna to underwrite life insurance and annuities, earning Brace the title of "father" of American life insurance. On May 28, 1853, the Annuity department separated from Aetna Insurance to be incorporated as the Aetna Life Insurance Company, with Eliphalet Bulkeley as president. The fire insurance company went on to become part of Connecticut General, which merged into Cigna. On November 29, 1853, J.