Melissa Wei, M.D., M.P.H., S.M., is a general internist and clinician investigator in the Division of General Medicine at the University of Michigan Medical School. Her research focuses on multimorbidity, the coexistence of multiple medical conditions, including its measurement, management, prognosis, and prevention. She is particularly interested in identifying modifiable risk factors that may be translated into clinical and public health interventions to 1) optimize patient care, and 2) prevent or delay multimorbidity onset, progression and complications. She completed a series of studies to develop and validate the Multimorbidity-Weighted Index (MWI). She is currently funded by a career development award (K23) from the National Institute on Aging and several pilot grants to develop and validate the index in administrative data and increase its application for clinical use. Dr. Wei also has longstanding clinical and research interests in nutrition and chronic disease prevention. She studied nutritional sciences as an undergraduate at Cornell University and previously held a position in the Department of Nutrition at the Harvard T.H. Chan School of Public Health. She has published on the associations between vitamin D and colorectal cancer and other health outcomes, as well as other nutrient-disease associations. Dr. Wei received her Medical Doctorate and Master of Public Health in Epidemiology and Biostatistics from Oregon Health & Science University School of Medicine in 2010. She completed internal medicine residency in the primary care track at Emory University School of Medicine in 2013. She completed the Harvard Medical School General Medicine and Primary Care Fellowship Program and received a Master of Science in Nutritional Epidemiology from the Harvard T.H. Chan School of Public Health in 2015.