The goal of the study was to evaluate the association between types of usual source of care (USC) and access to care for people of different race/ethnicity and insurance coverage. Individuals reporting a doctor's office or health maintenance organization as a USC achieved the highest level of access. Individuals reporting a hospital emergency department as a USC were more likely to have access barriers and unmet needs. The independent effects of race/ethnicity were no longer significant after controlling for the type of USC and other factors. Insurance was a significant moderating factor on access to care.