This special Supplement of Medical Care focuses on the Veterans Access, Choice and Accountability Act of 2014 ("Choice Act"). In response to concerns regarding access to VA healthcare, Congress enacted The Choice Act (or Program), which provides Veterans who live more than 40 miles from a VA facility – or who are unable to schedule an appointment with a VA healthcare provider within 30 days – the option of receiving care from eligible non-VA healthcare providers. Findings from articles in this Supplement will help inform updates to the Choice Act. Below are just some of the important HSR&D and QUERI (Quality Enhancement Research Initiative) studies included in this supplement.