Millennials and Gen Z physicians represent a significant demographic shift in the physician workforce. According to Harvard Pilgrim Health Care, approximately 35% of the current physician workforce are millennials, who made up the overwhelming majority (94%) of final-year residents and fellows in 2019, according to data from the New England Journal of Medicine (NEJM). Since then, millennials have nearly taken over the entire group at 99%. The first wave of Gen Z doctors are also entering the workforce. Some of the oldest members of Gen Z are in their last year of medical school or are already licensed doctors in residency programs.