Families across Brooklyn are familiar with Dr. Cao, South Slope’s very own small town pediatrician [http:///blog/health/meet-your-new-small-town-doctor-south-slope-pediatrics-dr-cao] , but what about the man running the show from behind the scenes? We decided to stop in at South Slope Pediatrics [http://www.southslopepediatrics.com/] yesterday and have a quick