Robert A. Joseph, MD specializes in oncology, hematology, and internal medicine. He is a member of both the American College of Physicians and the American Society of Clinical Oncology, and is Board Certified as a Diplomate of the American Board of Internal Medicine, and as a Diplomate in Clinical Oncology. Dr. Joseph's medical career includes work with the US Army Medical Corps, the UCLA Medical Center, Cedars/Sinai Medical Center, Westlake Community Hospital. Los Robles Regional Medical Center, Simi Valley Adventist Hospital, and Pleasant Valley Hospital. Dr. Joseph is a graduate of Purdue University (Science) and the University of Illinois School of Medicine. He performed a medical internship in Los Angeles County, followed by residency at Wadsworth VA/UCLA Medical Centers (Internal Medicine, Hematology) and USC Medical Center (Oncology). Dr. Joseph spent more than 30 years in private practice in Westlake Village, CA before coming to PeaceHealth St. John Medical Center.