Dr. John R Toth specializes in family practice in Concord area. Dr. John R Toth, DO has a medical practice at 2270 Bacon Street, Concord CA, and has over 30 years of experience in the field of medicine. He graduated from his medical school with his medical degree in 1987. Dr. Toth is accepting new patients at his medical office and practice location in Concord, California. He is available for appointments, preventative care, medical care as well as ongoing patient care.