Dr. Hayes's research and projects primarily focus on optimizing antimicrobial usage and limiting unnecessary diagnostic testing. He is also interested in interventions to optimize the management of bloodstream infections. He represents Banner University Medical Center/University of Arizona College of Medicine as a principal investigator on the Society for Healthcare Epidemiology of America SHEA) Research Network. This is an international consortium of greater than 100 hospitals collaborating on multi-center research projects to advance the science of antimicrobial stewardshiand healthcare epidemiology. In addition, Dr. Hayes participates in research related to the optimization of the diagnosis and management of invasive fungal infections, such as candidemia and endemic mycoses. He is an active member of the Mycoses Study GrouEducation and Research Consortium and participates in MSG-sponsored clinical trials currently an investigator for MSG-15: Suba-itraconazole versus conventional itraconazole in the treatment of endemic mycoses: a multi-center, open-label, randomized comparative trial)