Prior to his work at the University of Chicago, Jonnsebastian was a staff attorney at Legal Council for Health Justice where he led three Medical-Legal Partnerships (MLPs) throughout Chicago. MLPs provide a framework in which medical providers work in collaboration with a legal aid partner to transform medical practices and the way patients are served. Through the MLPs that he led, he implemented a curriculum to educate healthcare staff about the range of social, economic, or environmental issues, and other inequities that harm the health of patients. Jonnsebastian led training to educate healthcare providers on how to screen patients for underlying health-harming legal needs. He also provided direct services and legal representation patients who presented with health-harming legal needs.
Jonnsebastian earned his B.A. in International Relations and Political Science with a minor in criminal justice from Florida International University. While an undergraduate, he studied abroad in Brazil leading a human rights project with AIESEC, an internationally acclaimed non-governmental organization. Later, he graduated from the UIC School of Law in 2019, working as the Research Assistant for the director of the International Human Rights Clinic during his time there. In March of 2020, Jonnsebastian was admitted to the Illinois State Bar to practice law.
Originally from South Florida, Jonnsebastian is a queer, first-generation, Latine attorney of Colombian descent and a native Spanish speaker. As a result of his lived experiences and his intersecting identities, he has developed a passion for human rights and health equity work.