Dr. Edward Chang is a neurosurgeon who specializes in treating drug-resistant epilepsy, facial pain, movement disorders and brain tumors. He has expertise in advanced brain mapping methods, techniques that enable surgeons to remove diseased brain tissue, such as tumors, while minimizing damage to healthy tissue that's important for functions such as speech and movement. He also has extensive training in deep brain stimulation for movement disorders and other devices that alter nerve activity to treat disease.