adcelannotate = {"mobilepaywallcategory" : "MOBILE_PREM-LOCAL","nativepaywallcategory" : "NATIVE_PREM-LOCAL"};Mount Carmel Health System is joining a fast-growing national company to open "multiple" free-standing emergency departments across central Ohio — a move certain to intensify an already fierce competition among local nonprofit hospitals. The alliance follows Lewisville, Texas-based Adeptus Health Inc.'s establishment of a local foothold in 2014 with the purchase of 6 acres at Polaris, ground for which it had submitted plans for a for-profit hospital.