Monthly Meeting General Meeting third Friday of every month at 7:30pm. We are located at the Northridge Medical Center Hospital. 18300 Roscoe Blvd Northridge, CA 91325 at the corner of Etiwanda/Roscoe Blvd. Map Set your GPS to: 34.220597,-118.532065 Park off Etiwanda, enter the tall building on the north side of the complex. Take the elevator to the 5th floor (Penthouse).