Dr. Cleary is an oncologist who specializes in gastrointestinal cancers. In addition to treating patients with neuroendocrine cancer, he treats malignancies including pancreatic, colon, rectal, biliary, and liver.

He was awarded a Lustgarten Foundation/Stand Up To Cancer (SU2C) grant in support of his work developing new therapies for patients with pancreatic cancer. Dr. Cleary has published over 30 publications in such journals as The New England Journal of Medicine, The Lancet, The Journal of Clinical Oncology, Cancer Discovery, and The Journal of Clinical Investigation. In addition to his research activities, he has won awards for both his clinical care at Dana-Farber and his teaching at Harvard Medical School.