Dr. Wallen Chi Yin Chan, MD

Dr. Wallen Chan is a gastroenterologist and internal medicine physician who graduated from the Icahn School of Medicine at Mount Sinai. He completed his residency training at Mount Sinai Medical Center, building expertise in digestive health and comprehensive internal medicine care. With 37 years of experience treating patients, Dr. Chan brings extensive knowledge to his practice. He speaks Chinese and Spanish in addition to English.

Dr. Chan practices at multiple locations throughout Staten Island and maintains affiliations with Richmond University Medical Center, Maimonides Medical Center, Staten Island University Hospital, and Staten Island University Hospital South. His clinical focus includes treating acid reflux, GERD, and digestive issues in both adults and children. He performs colonoscopies, lower GI endoscopies, and minimally invasive laparoscopic procedures to diagnose and treat digestive conditions. Patients have given him an average rating of 4.5 out of 5 stars on Vitals.