Dr. Apfel practices at a busy, Columbia pediatric cardiology group in northern New Jersey. Together with his practice associates, Drs. Marans, Rhee, and Solowiejczyk, Dr. Apfel specializes in patients with all levels of complexity, including congenital heart disease, acquired heart disease, and fetal cardiology. He is a consultant to several area hospitals. He is a pediatric cardiology attending at Columbia, and serves there as an echocardiography attending.