The purpose of this pilot study is to investigate the role of a novel subspecialty track model in training pulmonary fellows for independent subspecialty clinical practice. The study aims to evaluate pulmonary fellows self-perceived competency, clinical preceptors perceived ability of fellows to provide longitudinal care, and fellows medical knowledge before and after participation in the track. While this pilot study has not yet been completed, the hope is that it will demonstrate that a subspecialty track in fellowship can improve the specialized care that pulmonary fellows provide.