Dr. Maeng's research interests focus on the issues of healthcare delivery, quality, and patient outcomes. The goal is to identify effective interventions, strategies, and innovations that will improve healthcare quality while controlling the cost. In particular, he specializes in using large observational data sets, such as electronic medical records and claims data, to evaluate the effects of quality improvement initiatives and interventions that are designed to influence the behaviors of healthcare providers as well as patients. He is also interested in developing complex statistical models for establishing causal inferences from non-experimental research settings. Dr. Maeng has performed both quantitative and qualitative analyses to examine the impacts of community-level interventions that aim to align the incentives of the key stakeholders within the healthcare sector.