Her research is devoted to the development and evaluation of new models of HIV care delivery to reduce HIV-related diseases/mortality and decrease its transmission. She is considered a leading authority on implementation science in the global health field. In collaboration with Cornell’s Center for Global Health, McNairy is exploring the implementation of HIV delivery systems in resource-limited settings. Before her transition to WCMC, she was an associate research physician in the division of global health equity at Brigham and Women’s Hospital 2009-2014.