American Addiction Centers | 31,127 followers on LinkedIn. Leading nationwide provider of substance use treatment offering a full continuum of care. #FreedomFromAddiction | American Addiction Centers (AAC) is a nationwide network of treatment centers, offering a full continuum of care. We take a holistic approach to addiction treatment — by addressing each client as a whole person. We work to consider how factors such as an individual’s lifestyle, environment, health, and co-occurring mental health disorders may play a part in his or her addiction to drugs or alcohol.