Dr. Judy Chang specializes in optometry in Walnut Creek area. Dr. Judy Chang, OD has a medical practice at 320 Lennon Lane, Walnut Creek CA, and has over 23 years of experience in the field of medicine. She graduated from her medical school with her medical degree in 1994. Dr. Chang is accepting new patients at her medical office and practice location in Walnut Creek, California. She is available for appointments, preventative care, medical care as well as ongoing patient care.