I am a radiation oncologist with more than 18 years of experience. I specialize in treating gastrointestinal malignancies. These include rectal cancer, liver cancer, gallbladder and bile duct cancers, pancreatic cancer, gastric cancers, and anal cancer. I see patients at Memorial Sloan Kettering’s Manhattan location. 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.