i feel more comfortable with kathy jackson than the doctors and nurses in the hospital. you know, i can tell kathy my problems-- you know, i'm wheezing and stuff like that. she checks me out, you know, and hears my lungs, you know, talks to me. >> as always, you always have some wheezes, but you're moving pretty good air, so that's good. >> she's the one that keeps me out the hospital. >> we're going to come back in one month, june 13th at 11:00. >> gawande: under kathy's care, over the last six months, derek's er visits have been reduced from 35 to just two. >> see you. >> gawande: and brenner thinks they can do even better, if he can get other people from around the city to think like hot-spotters. >> we formed this as really a way of beginning to think, agency by agency, how we can pull together for the most challenging cases. every month, the whole city comes together-- front line providers, social workers, and we do anonymous case discussions at the city level. so when someone like derek shows up at one of the emergency rooms, they'll call us right away. >> actually,