Dr. Tkaczyk is a physician-scientist with research interests in biophotonics for diagnosis and treatment of cancer and cancer treatment-related skin diseases. He is a graduate of the MD/PhD at the University of Michigan, with PhD in electrical engineering from the Center for Ultrafast Optical Science (CUOS). At CUOS, he overlapped with his academic grandfather Gerard Mourou, the 2018 Nobel Laureate who founded the lab. Dr. Tkaczyk's post-doctoral training in medical device design at the University of Tartu was supported by Fulbright and Whitaker awards. This work culminated with a prize awarded by the US Ambassador to Estonia and the Estonian Speaker of Parliament at the 2011 Estonian-American Innovation Award ceremony. In 2016, he completed dermatology residency training at Vanderbilt University Medical Center, where he is Assistant Professor of Dermatology and Biomedical Engineering. He is also an attending dermatologist at the VA Medical Center. He is board-certified to practice dermatology both in the USA and in Europe. As founding Director of the Vanderbilt Dermatology Translational Research Clinic, he lectures internationally on dermatologic imaging technologies, which is his research focus.