Dr. Sumner works collaboratively with her clients to help them achieve their goals. Clients play an active role in sessions, and they learn skills that will be useful throughout their lifetime. Dr. Sumner provides her clients with the tools they need to identify, understand, and modify their thought and behavior patterns so that they can live the life they envision.

Dr. Sumner is an ardent believer in the integration of research and practice. Not only is her clinical practice informed by evidence-based treatments, but she also conducts research on the impact of stress on emotional and physical health at Columbia University Medical Center.