Dr. William Keyser specializes in emergency medicine in Sonora area. Dr. William Keyser, MD has a medical practice at 347 Andrieux Street, Sonora CA, and has over 48 years of experience in the field of medicine. He graduated from University Of Mississippi School Of Medicine with his medical degree in 1969. Dr. Keyser is accepting new patients at his medical office and practice location in Sonora, California. He is available for appointments, preventative care, medical care as well as ongoing patient care.