Mark D. Ewalt, MD - MSK Pathologist

Memorial Sloan Kettering pathologist Mark Ewalt specializes in diagnosing and monitoring blood cancers, including leukemia, lymphoma, multiple myeloma, and myelodysplastic syndrome.

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 8:00 a.m. and 6:00 p.m. ET.