 High frequency rTMS applied to the left dorsolateral prefrontal cortex L-DLPFC has been shown to have an antidepressant effect. Initial studies comparing electroconvulsive therapy ECT and rTMS suggest that rTMS has been as effective as ECT in treating non-psychotic depression. Given the high degree of ongoing dysfunction in depressed adolescents despite optimization of treatment with antidepressant medications, new concerns regarding suicidal thoughts and behaviors in adolescents treated with antidepressant medications, and the more interventional nature of ECT, the use of rTMS as adjuvant therapy may be of significant clinical benefit. Thus far, research using rTMS to treat depression in adolescents has been limited. The primary aim of this study is to examine the safety and feasibility of using 10 Hz rTMS applied to the left dorsolateral prefrontal cortex L-DLPFC as adjuvant treatment for depression in adolescents. 