Jonathan Hofmann is a senior investigator in the Occupational and Environmental Epidemiology Branch (OEEB) of the Division of Cancer Epidemiology and Genetics (DCEG) at the National Cancer Institute (NCI). He received a PhD in epidemiology and MPH in environmental and occupational health from the University of Washington. Hofmann serves as the chair of the NCI PFAS Working Group and is the principal investigator (PI) of the Biomarkers of Exposure and Effect in Agriculture (BEEA) study and the NCI co-PI of the Agricultural Health Study.  His research focuses on understanding the carcinogenic potential of pesticides and other agricultural exposures and PFAS, and he also uses molecular epidemiologic approaches to investigate the etiology and natural history of multiple myeloma and its precursor.