Thomas J. Hornyak, MD, PhD

Thomas J. Hornyak, MD, PhD
Chief, Dermatology
​University of Maryland School of Medicine
Baltimore, Maryland

​Thomas J. Hornyak, M.D., Ph.D., is currently chief of dermatology for the VA Maryland Health Care System as well as associate professor of dermatology and biochemistry and molecular biology at the University of Maryland School of Medicine in Baltimore. He received an A.B. in music from Princeton University and an M.D. and Ph.D. from the Medical Scientist Training Program at The University of Cornell University Medical Center followed by residency training in dermatology at New York University Medical Center. He began his studies of melanocyte development and gene regulation in melanocytes during dermatology training and during a postdoctoral fellowship in the Department of Biochemistry at NYU.

Dr. Hornyak began work as an independent investigator in the department of dermatology at the Henry Ford Health System, where he also initiated a pigmented lesion clinic to evaluate patients with melanoma and with numerous and unusual melanocytic nevi. He then became an investigator in the Dermatology Branch of the Center for Cancer Research, National Cancer Institute, NIH. At the NCI, he continued his studies of basic melanocyte biology, expanding to laboratory studies of melanoma. As a dermatologist in the NIH Clinical Center, he was both principal investigator and associate investigator on clinical research projects focused upon melanocytic nevi and the cutaneous features of select genetic cancer predisposition syndromes.

Dr. Hornyak moved to his current position in September 2011 where he has administrative responsibility for dermatology clinical activities within the VA Maryland system, sees patients and teaches dermatology residents in the offices of the department of dermatology at the University of Maryland Medical Center, and continues his basic research on melanocyte stem cells and epigenetic changes during melanoma development in the department of biochemistry and molecular biology. His laboratory focuses upon defining subpopulations of melanocyte progenitor cells and their contribution to the development of melanocytic neoplasms.