He is board certified in Oral Medicine and practices at Brigham and Women’s Hospital and Dana-Farber Cancer Institute with special interest in oral mucosal diseases, salivary gland diseases, and oral complications in cancer patients. He has published extensively in the field of oral medicine with an emphasis on oral complications of hematopoietic cell transplantation and chronic graft-versus-host disease.

Dr. Treister's clinical and research interests are focused primarily on the diagnosis and management of oral complications in cancer patients. He works closely with a number of disease programs through the Dana-Farber/Brigham and Women's Cancer Center, including Hematologic Malignancies and Stem Cell Transplantation, Head and Neck Oncology, and Sarcoma and Bone Oncology, where he actively sees patients and collaborates on numerous clinical research initiatives. The goal of his research is to better define various oral complications of cancer and cancer therapies, explore their underlying pathobiological mechanisms, and evaluate approaches to diagnosis and management with the ultimate goal of improving long-term outcomes.