Dr. William Norman Hamstra specializes in general surgery in San Ramon area. Dr. William Norman Hamstra, DO has a medical practice at 2305 Camino Ramon, Suite 217, San Ramon CA, and has over 31 years of experience in the field of medicine. He graduated from Oklahoma College Of Osteopathic Medicine And Surgery with his medical degree in 1986. He is affiliated with numerous hospitals, including San Ramon Regional Medical Ctr (CA) and more. Dr. Hamstra is accepting new patients at his medical office and practice location in San Ramon, California. He is available for appointments, preventative care, medical care as well as ongoing patient care.