Dr. Jennifer Melfi is a fictional character from the television series The Sopranos. She is portrayed as a psychiatrist who treats the main character, Tony Soprano, helping him navigate his complex emotional and psychological issues. Throughout the series, Dr. Melfi's professional relationship with Tony explores themes of mental health, morality, and the challenges of treating a mob boss. Her character is known for her intelligence, empathy, and the ethical dilemmas she faces in her practice.