Purushottam B. Tiwari is an Associate Professor at the Department of Oncology, School of Medicine, Georgetown University. He completed his Master’s Degree (M.Sc.) in Physics, with Biomedical Physics as a special elective, from the Central Department of Physics, Tribhuvan University of Nepal. After completing his M.Sc., he taught Physics courses, including engineering Physics and Biomedical Physics in different campuses of Tribhuvan University. He earned his Ph.D. from Florida International University (FIU), Miami, FL, USA, in 2015. During his Ph.D. tenure, he conducted scientific research in Biophysics, primarily focused on investigating biomolecular interactions at the nanoscale and the use of surface plasmon resonance (SPR) technology to study biomolecular interactions. His current research includes the investigation of protein–protein and protein–DNA interactions, as well as interaction of small molecules with proteins and DNA for drug discovery.