Health Workforce Advisory Commission Act of 2003 - Directs the Comptroller General to establish a Health Workforce Advisory Commission. Includes among the duties of the Commission: (1) reviewing the impact of Federal health workforce policies and other factors on the ability of the health care system to provide optimal services; (2) analyzing the role and global implications of internationally trained professionals and personnel in the United States workforce; and (3) making recommendations to Congress concerning health workforce policy issues. Specifies duties the Commission shall perform concerning reports and reviews.