Stephen Hemsley

President and CEO
UnitedHealth Group

As the CEO of the nation’s largest single health carrier, Stephen Hemsley’s clout in the health care industry is vast—in August he was named fourth on a list of the most influential people in the field, only three spots behind President Barack Obama himself. After announcing an optimistic financial outlook for 2014, Hemsley said UHG will embrace new state health insurance exchanges as a growth strategy, a move that reverberated around the industry.