What is the fine-grained topic of the following text: In 2009, after spending 17 years at Northwestern University Feinberg School of Medicine, Dr. Nuzzarello left her hometown of Chicago to join the founding team of the Oakland University William Beaumont School of Medicine (OUWB). Only return the topic.
Dr. Nuzzarello's career transition from Northwestern University to Oakland University William Beaumont School of Medicine in 2009.