25 William Castner (10)
Perhaps the toughest person on the list to slot, so we’ve placed him right in the middle. Horizon’s trumpeted OMNIA plan was in disarray when he arrived, and most credit Castner, a skilled lawyer and political operative, for righting the ship for the state’s largest insurer. The lawsuits have all but disappeared, as has the threat of legislation, which never got to the floor of the Legislature. His relationships with the state’s hospital systems are solid. Detractors have questioned his relationship with the Legislature due to a political rift in South Jersey, but his supporters feel the rift is part of the political game and that Castner continues to have influence in Trenton. The year ahead is big for Horizon as it is facing two big issues in Trenton: the governor’s desire to gain a share of its reserve fund and changes in out-of-network legislation.