Amil is Brazil’s largest health insurer and part of UnitedHealth Group. The brand was established in 1978 by Edson Bueno. In 2012, UnitedHealth Group and Amil Participações completed the first phase of their merger. Today, the number of customers of Amil is over 6,2 million, while the number of client companies is more than 363 thousand, according to the insurance company’s official website.