Dr. William H To specializes in physician assistant in Orange area. Dr. William H To has a medical practice at 101 The City Drive South, Orange CA, and has over 13 years of experience in the field of medicine. He graduated from his medical school with his medical degree in 2004. He is affiliated with numerous hospitals, including University Of California Irvine Med Center (CA) and more. Dr. To is accepting new patients at his medical office and practice location in Orange, California. He is available for appointments, preventative care, medical care as well as ongoing patient care.