Best Places to Work in Healthcare - 2018 "Dress Like a Co-Worker Day." Vice President Jonas Thom and his behavioral-health team were among those earning a casual day during the Month of Thanks. All <Prev Next> Rank 34 - Provider/Insurer CareSource Provider/Insurer, Dayton , OH Tweet Share Share Email More Provider/Insurer rank: 34Years on List: 3Number of employees: 3,997Voluntary employee turnover: 11%Employee's love: Flexible work schedule; career-development programs; transparent communication from leadership