Zubretsky graduated from the
Barney School of Business at the
University of Hartford. He began his career as an insurance partner at
Coopers & Lybrand. He went on to hold positions of "senior VP at
Unum, a partner in Brera Capital Partners, and an executive VP of business development at
MassMutual Financial Group". Zubretsky worked at Aetna for nine years, for part of that time as "CEO of Aetna’s Healthagen Holdings subsidiary". Zubretsky was the president and chief executive officer of
Hanover Insurance from June 2016 until October 2017, where he oversaw an overhaul of Hanover's organizational structure that merged "the company's small commercial, middle market and personal lines business into one division called Hanover Agency Markets", resulting in at least 160 cut jobs. He resigned from Hanover in October 2017, when he became chief executive and president of Molina Healthcare. In 2024, Molina Healthcare announced that Zubretsky's tenure as CEO had been secured and that he would work 2027, and that Zubretsky had been "awarded a special one-time stock grant". In 2021,
Modern Healthcare rated Zubretsky 67th in its list of the 100 Most Influential in Healthcare. In 2022, Zubretsky's total compensation from Molina Healthcare was $180.8 million. In 2023, Zubretsky's total compensation was $21,491,723. == References ==