A new 897-bed facility for Northwestern Memorial opened in 1999, located in two towers in Chicago’s posh Streeterville neighborhood. Northwestern Memorial has a medical staff of more than 1,500 physicians who are faculty at Feinberg School of Medicine at Northwestern University. The hospital has an Aa2 bond rating from Moody’s Investor Services. Northwestern’s parent, Northwestern Memorial HealthCare, opened the $500 million Prentice Women’s Hospital near Northwestern Memorial in 2007. In 2010 NMH acquired 215-bed Lake Forest (Ill.) Hospital and outpatient center in Grayslake, Ill.