Zubretsky took over as Molina Healthcare's chief executive in November 2017. Molina's focus is on government-run health care insurance programs, including Medicare, Medicaid and state-run Obamacare exchanges. The company last year told investors that it would cut its real estate holdings by approximately two-thirds for cost savings. Prior to Molina, Zubretsky served as president and CEO for Hanover Insurance Group. Before that, he served in several senior executive roles at health insurance giant Aetna, including as senior executive vice president of its national business unit.