Fan Li, PhD, is an associate professor in the Department of Biostatistics at the Yale School of Public Health, a faculty member in the Yale Center for Methods in Implementation and Prevention Science (CMIPS), the Yale Center for Analytical Sciences (YCAS), as well as an affiliated faculty member of the Yale Alzheimer’s Disease Research Center (ADRC). He received his PhD in Biostatistics from Duke University in 2019 and joined the Yale Biostatistics faculty the same year. His primary research interests are in developing causal inference methods for both observational studies and pragmatic clinical trials, including those employing cluster randomization and stepped wedge designs. His methodological contributions span causal mediation analysis, principal stratification, treatment effect heterogeneity, selection bias, and techniques for improving both internal and external validity in treatment comparisons across diverse study designs. Dr. Li has been the principal investigator of multiple NIH- and PCORI-funded awards. He has published over 170 peer-reviewed articles in statistical methodology and collaborative research, advancing the design and analysis of clinical and population health studies.