Dr. Jing-Mei "Deb" Chen is a fictional character from the television series ER. She is portrayed by actress Michelle Ang and first appears in the show's 12th season. Dr. Chen is a talented and ambitious medical intern who works in the emergency room of Chicago's County General Hospital. Throughout her time on the show, Dr. Chen faces various challenges as she navigates her medical career and personal life. Her character is known for her dedication to patient care and her desire to prove herself in a demanding environment, reflecting the struggles of many young doctors in the field.