Dr. Tossas-Milligan is a trained cancer epidemiologist, with a research interest in cancer health disparities. She currently serves as the Director of Global Assets and International Alliances at the University of Illinois Cancer Center, under the distinguished leadership of Dr. Robert A. Winn.

In this role, she oversees a portfolio of international cancer research partnerships, most notably two unique, assets-based partnerships with the Republic of Cuba. Additional global partnerships include projects in Uganda, Ethiopia, Hungary, and various South, and Central American countries, all focused on assets-based global partnership development.