NASHVILLE – Ascension Saint Thomas announced that Fahad Tahir, the system’s chief strategy officer and former president and CEO of Ascension Saint Thomas Hospital Midtown and West campuses, will replace Tim Adams as president and CEO of the health system. Tahir’s tenure is effective immediately as Adams assumes a new role as Regional Operating Officer and Senior Vice President for Ascension where he will oversee Ascension ministries in 10 states, including Tennessee. He and his family will continue to reside in the Nashville area.