It wasn’t.
The venerable Denver hospital, originally known as General Rose Memorial Hospital, was actually named after a man whose name was Maurice Rose.
He was raised in Denver, a member of an observant Jewish family, and became a war hero, a general whose combat death in the waning days of WW II made him a celebrity in his hometown, causing Jewish activists here to memorialize him by conferring his name on a hospital created to provide a place for Jewish physicians to practice medicine.
The Denver Jewish community mourned him in 1945. The US Army honored him with a host of medals, including the Distinguished Service Cross, Silver and Bronze Stars and Purple Heart. The US Navy named a ship in his honor. The French government presented him with their coveted Legion of Honor and Croix de Guerre decorations.