Dr. Chien-Ko Wu is an internist in Orange, California. He received his medical degree from National Taiwan University College of Medicine and has been in practice for more than 20 years. Dr. Chien-Ko Wu has expertise in treating bronchitis, hypertension & high blood pressure, diabetes, among other conditions - see all areas of expertise. Dr. Chien-Ko Wu accepts Medicare, Aetna, Blue Cross - see other insurance plans accepted.