Long Island Jewish Medical Center is a clinical and academic hospital and medical campus within the Northwell Health system. It is a 1,004-bed, non-profit tertiary care teaching hospital and medical campus serving the greater New York metropolitan area. The 48-acre campus is 15 miles east of Manhattan, on the border of Queens and Nassau Counties, in Gleā¦Long Island Jewish Medical Center is a clinical and academic hospital and medical campus within the Northwell Health system. It is a 1,004-bed, non-profit tertiary care teaching hospital and medical campus serving the greater New York metropolitan area. The 48-acre campus is 15 miles east of Manhattan, on the border of Queens and Nassau Counties, in Glen Oaks, Queens and Lake Success, New York, respectively.