Dr. William Weijen Chang is a Massachusetts state licensed medical doctor, specializing in Internal Medicine. Graduated Magna Cum Laude from New York Medical College, completed residency training in Duke University, Dr. Chang's clinical interests include hospital medicine(inpatient services). Dr. Chang currently is working at Baystate Health, located in 759 Chestnut St Springfield MA 01199 Dr. Chang's clinic interests include hospital medicine(inpatient services). Please call +1-413-794-0000 to contact. Access cdoc101.com on a desktop computer to view more details. | |||