About KeyStone Center  
 
Welcome to the KeyStone Center an environment of compassion and caring utilizing state of the art treatment for addiction and co-occurring issues. The facility is located five miles south of the Philadelphia Airport in Suburban Philadelphia which ensures convenience for our patients who have traveled from other areas of the Country to seek treatment within the facility. The facility is located 5 miles south of the Philadelphia Airport in Suburban Philadelphia. We provide behavioral healthcare in a beautiful Victorian mansion built in 1891. The estate boasts tree-lined grounds and an expansive campus that are listed on the Historic Register in Delaware County.