His work with clinical and research experience spans dermatology, cutaneous oncology, and immunology.
He is the Thomas B. Fitzpatrick Professor at Harvard Medical School, and chairs the Departments of Dermatology at Brigham and Women's Hospital.
He also leads the Cutaneous Oncology Disease Center at the Dana Farber Cancer Institute.
He was recruited to Harvard Medical School as the Thomas B. Fitzpatrick Associate Professor of Dermatology.
[3][4][5] After discovering and describing keratinocyte cytokines in late 1980s/early 1990s, he has spent the past two decades years focusing on skin homing T cells, from reporting the molecular structure of Cutaneous Lymphocyte Antigen[6] to co-discovering that non-inflamed skin contained large numbers of memory T cells.