Dr. Zhang conducts statistical methodology research in broad areas including non-/semi-parametric statistical inference, non-/semi-parametric models for panel count and interval-censored data analysis, causal inference, clinical and pragmatic trial design, statistical computing, and machine learning. He also actively collaborates with scientists in the fields of neurodegenerative diseases, neurosciences, cancer, cardiovascular disease, diabetes, sports medicine and community health promotion by providing rigor in study design, statistical analysis plan and scientific interpretation of analytical results.