Mark Rich. CFO of Steward Health Care System (Boston). Before taking on the CFO role, Mr. Rich was executive vice president for corporate strategy at Steward. In this role, he led the health system's acquisition efforts. Mr. Rich previously served as CFO of Boston-based Caritas Christi Health Care. Private equity firm Cerberus Capital Management acquired Caritas Christi Health Care in 2010 and established Steward Health Care System the same year