ATI is a leading provider of physical therapy and operator of outpatient rehabilitation clinics. ATI provides comprehensive outpatient services through 85 clinics across Illinois, Wisconsin, Delaware, Maryland and Pennsylvania. Founded in 1996, ATI offers a full suite of customized treatment therapy programs that incorporate the most effective elements of physical therapy, exercise physiology and athletic training. ATI has earned a reputation with patients, physicisans, payors and employers for providing high quality therapy services with superior patient outcomes.