Dr. Robert Joseph Zellmer specializes in anesthesiology in Napa area. Dr. Robert Joseph Zellmer has a medical practice at 1000 Trancas Street, Napa CA, and has over 26 years of experience in the field of medicine. He graduated from Medical College Of Wisconsin with his medical degree in 1991. Dr. Zellmer is accepting new patients at his medical office and practice location in Napa, California. He is available for appointments, preventative care, medical care as well as ongoing patient care.