Presence Health (www.presencehealth.org ) has joined Ascension and is now part of AMITA Health. AMITA Health is a joint opera ... ting company formed by the Adventist Health System in Altamonte Springs, Fla., and St. Louis-based Ascension. With the addition of Presence Health, AMITA Health is now the largest health system in Illinois, comprising 19 hospitals and more than 230 sites of care. The newly combined health system has 900 providers in its medical groups, more than 26,000 associates and 7,000 physician partners and now serves over 4.3 million residents in the greater Chicagoland area. Find a care provider near you, visit www.presencehealth.org/FindADoc. read more