The Affordable Care Act (ACA) is set to transform health and social services in the U.S., expanding insurance access for an estimated 30 million Americans and emphasizing integrated care models. Social workers are uniquely positioned to play a pivotal role in implementing the ACA through patient navigation, care coordination, and behavioral health treatment, ensuring that vulnerable populations are effectively served. To maximize their impact, social workers must advocate for their inclusion in key provisions of the ACA and engage in research to demonstrate their effectiveness in these roles.