Stricken by multiple medical problems, Nader entered the hospital in September 2001. He died on February 4, 2002, in Woodland Hills, California, of cardiopulmonary failure, pneumonia, and multiple cerebral infarctions. He was survived by Miller (with whom he had spent 55 years), his cousins Sally Kubly and Roberta Cavell, and his nephew, actor Michael Nader. His ashes were scattered at sea; a cenotaph in his honor, together with Mark Miller and Rock Hudson, exists in Cathedral City's Forest Lawn Cemetery. In 2002, a Golden Palm Star on the Palm Springs, California, Walk of Stars was dedicated to him.