Xuejie (James) is a Senior Fellow at the NORC. He seeks to advance the understanding of the interaction among economic forces, policy, and health, broadly defined. His research has covered a range of topics including: 

• Innovative methodological approaches using big data, machine-learning technique, and claims data
• Patient-centered outcomes research in cost-related medication non-adherence
• Medicare Part D and pharmaceutical policy
• Drug pricing and savings in brand-name and generic drugs
• Disparities in access to, quality, and costs of care in treatments of diabetes, heart failure, and cancer 
• Comorbidity risk adjustment among Medicare beneficiaries

An author and co-author of over 60 journal articles, his lead-author studies have appeared in the journals such as the Medical Care, the Journal of American Geriatrics Society, the American Journal of Geriatric Psychiatry, the Journal of General Internal Medicine, the American Journal of Public Health, and the Journal of Integrative and Complementary Medicine. He has also published in the JAMA-family journals and in other leading journals such as the Annals of Internal Medicine, Diabetes Care, and Demography as a co-author or senior author.  He has also published in the JAMA-family journals and other leading journals such as the Annals of Internal Medicine, Diabetes Care, Health Services Research, and Demography as a co-author or senior author.

Nationally and internationally, James has served on the scientific and research review committees of the American Society of Health Economists (ASHEcon), the International Health Economics Association (IHEA), the International Society for Pharmacoeconomics and Outcome Research (ISPOR), the Society for Medical Decision Making (SMDM), and the AcademyHealth. He has also provided referee services to the medical research granting bodies of foreign governments including the Hong Kong SAR, and the Republic of Singapore. A reviewer for more than three dozen professional journals, he was recognized “for the exceptionally fine quality" of his efforts as a reviewer for the Annals of Internal Medicine, as an “outstanding reviewer” by the Health Services Research and was ranked among the Top 4% of peer reviewers for the JAMA Network Open. The students’ research projects he mentored have won accolades at the university training award, and national and international conference presentations.

James’s recent series of research publications included developing an integrated longitudinal dataset for patient-centered outcome measures in cost-related medication nonadherence (CRN) (2023), the longitudinal study of  prevalence and persistence of CRN before and during COVID pandemic (2023), decreasing CRN rates as population’s age advances among generational cohorts (2022), persistence of CRN in Medicare population at high risk of hospitalizations (2021), concentration of market shares among brand-name drugs and its implications to the societal costs (2020), generic substitution rates of oral contraceptives and associated out-of-pocket cost savings (2018), supported by the DHHS/ASPE, the NIH (NIA, NIDDK), and the FDA.