Dr. Riddle graduated from Johns Hopkins School of Medicine and completed her psychiatry residency at Johns Hopkins, serving as Chief Resident in her final year. She is now in a two-year clinical and research fellowship in reproductive psychiatry at the Women's Mood Disorders Center. She specializes in mood and anxiety disorders throughout the reproductive years. Prior to medical school, Dr. Riddle worked in services research at the University of Maryland. She also holds a 200 ton Yachtmaster license.