The National Register of Health Service Psychologists was established in 1974 and is the largest credentialing organization for psychologists and psychology doctoral students. We are an independent nonprofit organization dedicated to improving healthcare by identifying psychologists who meet specific education and training standards, and by verifying these professionals to consumers, healthcare organizations, and regulatory bodies. The National Register currently credentials 10,000 Health Service Psychologists and has approximately 5,000 psychology doctoral student and postdoctoral trainee members of its Associate Program.