My botty best at summarizing from Wikipedia: Founded by exercise physiologist Greg Steil in 1996 as one clinic in Willowbrook, Illinois . ATI Physical Therapy has more than 860 locations in the united states . it is the largest physical therapy company under one brand ATI Physical Therapy is rated 3.2 out of 5 in 456 reviews by current and former employees . cedric coco is the chief human resources officer . ATI’s 2017 revenue is estimated at $420 million . Joe Zavalishin is its Chief Development Officer. Joseph Jordan is Chief Financial Officer for the organization. Brent Mack is the chief operating officer. Greg Steil remains on as chairman of the board.