Kishwer Nehal is a board-certified dermatologist with advanced fellowship training in cutaneous oncology, Mohs surgery, dermatologic surgery, and laser surgery. She specializes in the surgical treatment of early-stage melanoma and high risk non-melanoma skin cancers. She is the Director of Mohs and Dermatologic Surgery at Memorial Sloan Kettering. Mohs surgery is a specialized surgical technique with high cure rates for high risk skin cancers allowing precise removal of skin cancers while preserving the surrounding healthy tissue. In her clinical research she studies noninvasive imaging techniques including confocal microscopy to improve early detection of skin cancers and expedite margin detection of skin cancers during skin surgery. As dermatopathologist Klaus Busam examines skin tissue under the microscope to provide clinical colleagues with information about the nature of their patients' skin disease. He is part of a multidisciplinary team of physicians dedicated to providing the best care to patients affected by skin cancer. The strength of the team reflects the depth of its expertise.

Memorial Sloan Kettering sees more patients with unusual or difficult-to-diagnose skin tumors than do clinicians and dermatopathologists almost anywhere else. Furthermore, they have the most advanced diagnostic methods available. Their research focuses on improving the accuracy of skin tumor diagnosis, in particular distinguishing nevi from melanoma. He is also the Director of the combined Memorial Sloan Kettering/Cornell Dermatopathology Training Program. In this role, he supervises the training of dermatology and pathology residents and fellows in the microscopic examination of skin diseases.