Dr. John P Demshar specializes in optometry in Stockton area. Dr. John P Demshar has a medical practice at 3133 West March Lane, Suite 2020, Stockton CA, and has over 40 years of experience in the field of medicine. He graduated from University Of California - School Of Optometry with his medical degree in 1977. Dr. Demshar is accepting new patients at his medical office and practice location in Stockton, California. He is available for appointments, preventative care, medical care as well as ongoing patient care.