CEO, UnitedHealthcare Office of the Chief Executive, UnitedHealth Group Steve Nelson is the chief executive officer of UnitedHealthcare, a $180 billion division of UnitedHealth Group (NYSE: UNH) – No. 5 on the Fortune 500 list. UnitedHealthcare serves one in eight Americans, making it the single largest business dedicated to health and well-being in the United States. Previously Steve served as chief executive officer of UnitedHealthcare’s Medicare & Retirement business, the nation’s largest organization dedicated to seniors and Medicare beneficiaries. Other past roles include leading UnitedHealthcare’s Community & State business, an organization that delivers Medicaid solutions in 30 states and the District of Columbia, serving 6.7 million beneficiaries, and leading the West Region of UnitedHealthcare’s Employer & Individual business. Before coming to UnitedHealthcare, Steve was president of the Eastern Region and Senior Products Division at HealthNet (NYSE: HNT) and served for 10 years in executive roles at the Henry Ford Health System.