David Cordani

Cigna CEO David Cordani is interviewed at the Reuters Health Summit 2014 in Washington April 1, 2014. REUTERS/Gary Cameron (UNITED STATES - Tags: HEALTH BUSINESS) - RTR3JH8K
ALIX COLOW. PICK UP. REUTERS/Gary Cameron Photograph by Gary Cameron — Reuters
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When Cordani isn’t busy competing in a reported 125 triathlons, he runs his company like a dedicated athlete. Since his appointment as CEO of the health insurer at the start of 2010 (he’s been with the company for decades), Cigna’s size has doubled, its customer base is up 16%, and its stock has climbed about 30% a year. In 2015, he led Cigna into a mega-merger with rival Anthem during a wave of healthcare mergers and acquisition. If approved by regulators, the proposed $54 billion deal would create the largest U.S. health insurer by membership and reduce the industry’s consolidation from five national players to three.