Dr. Caspersen is triple-boarded in Adult Psychiatry, Child & Adolescent Psychiatry, and Addiction Medicine. Conditions treated include depression, anxiety, addiction, and eating disorders, among others. She uses psychotherapy, often in combination with medications, depending on each patient's individual needs. She aims to maximize emotional well-being so that her patients can achieve their goals in life, work, school, and relationships.

Dr. Caspersen is on faculty at Weill Cornell/New York Presbyterian Hospital.  She appears at schools and companies to discuss substance use prevention, cell phone and social media use challenges, and other topics.