David N. Louis

David N. Louis, MD, is a distinguished Professor of Pathology at Harvard Medical School and serves as the Pathologist-in-Chief at Massachusetts General Hospital. A board-certified Neuropathologist and Pathology-Anatomic specialist, he has significantly influenced global standards in CNS tumor classification through his leadership in the WHO's 2007, 2016, and 2021 guidelines.

• Education: MD from Stony Brook Medicine, followed by residencies and a fellowship at Massachusetts General Hospital.
• Research Focus: Glioblastoma biology, molecular pathology, and CNS tumor diagnostics, with emphasis on single-cell genomics and mutation signatures.
• Scientific Recognition: Recipient of the 2020 MGH History Award for his contributions to preserving medical heritage.

His work bridges neuropathology and oncogenomics, particularly through collaborations with the MGH Research Institute. Key publications include foundational texts on WHO tumor grading and innovative studies on glioma heterogeneity.