Importance A timely, well-coordinated transfer from pediatric-to adult-focused primary care is
an important component of high-quality health care, especially for youths with chronic health
conditions. Current recommendations suggest that primary-care transfers for youths occur
between 18 and 21 years of age. However, the current epidemiology of transfer timing is
unknown. Objective To examine the timing of transfer to adult-focused primary care
providers (PCPs), the time between last pediatric-focused and first adult-focused PCP visits …