Due to ongoing worldwide migration processes, healthcare providers are frequently confronted with providing care to patients from diverse cultural, ethnic and linguistic backgrounds. Patients who do not share the same backgrounds as their healthcare providers are at increased risk of receiving suboptimal levels of care. To decrease health disparities in care, it is thus of utmost importance to consider the wide range of culture- and language-related barriers those patients face in receiving good quality health care. ACHC research focuses on the antecedents, processes and outcomes of communication with migrant patients, as well as on how to design and implement effective communication interventions to improve the quality of healthcare for those patients.