Dr. Brian John Koos specializes in obstetrics/gynecology in Los Angeles area. Dr. Brian John Koos, MD has a medical practice at 200 Medical Plaza Driveway, Suite 430, Los Angeles CA, and has over 47 years of experience in the field of medicine. He graduated from Loma Linda University School Of Medicine with his medical degree in 1970. He is affiliated with numerous hospitals, including Ronald Reagan U C L A Medical Center (CA) and more. Dr. Koos is accepting new patients at his medical office and practice location in Los Angeles, California. He is available for appointments, preventative care, medical care as well as ongoing patient care.