Margaret K. Callahan, MD, PhD

Memorial Sloan Kettering gastroenterologist David Faleck specializes in caring for people with inflammatory bowel diseases (IBD), people who have a history of gastrointestinal cancers, or who currently have cancer.

I am a medical oncologist who cares for people with bone and soft tissue sarcomas.

Memorial Sloan Kettering surgeon Meredith Bartelstein specializes in treating, bone sarcoma, benign bone tumors, soft tissue sarcoma, benign soft tissue tumors, and metastatic bone disease.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 833-501-3141, Monday through Friday between 8:30 AM and 5:30 PM ET.