Dr. Yumei Mary Chang is a New York state licensed medical doctor, specializing in Internal Medicine. Graduated Magna Cum Laude from UCLA School of Medicine, completed residency training in Mount Sinai Beth Israel, Dr. Chang currently is working at Lighthouse Guild, located in 250 West 64th St New York NY 10023 Please call +1-800-284-4422 to contact. Access cdoc101.com on a desktop computer to view more details. | |||