In addition to English, he speaks Korean. His professional affiliations include North Shore University Hospital (NSUH) and Northwell Health Physician Partners. Dr. Chang is a graduate of the University of California, Los Angeles (UCLA), David Geffen School of Medicine and the University of Maryland School of Medicine. On average, patients gave him a rating of 4.5 stars out of 5. He honors Amerigroup, Blue Cross/Blue Shield, and Empire BlueCross BlueShield, in addition to other insurance carriers. Dr. Chang has an open panel.