Mark D. Ewalt, MD - MSK Pathologist

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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.