Memorial Sloan Kettering medical oncologist Ping Gu specializes in treating gastrointestinal cancers, including esophageal cancer, stomach cancer, colorectal cancer, and pancreatic cancer. His practice is located at MSK Bergen, in New Jersey. For general information, call Memorial Sloan Kettering at 212-639-2000, 24 hours a day, seven days a week. To make an appointment, call us at 800-525-2225, Monday through Friday between 8:30 AM and 5:30 PM ET.