His clinical responsibilities include attending both in the Medical Intensive Care Unit and on the inpatient consultative service, and he participates in pulmonary faculty practice. He performs interventional pulmonary procedures such as endobronchial ultrasound, peripheral endobronchial ultrasound, and placement of indwelling pleural catheters. His research interests are in critical care ultrasound and endotracheal intubation. He is the section editor of the Ultrasound Corner in the Journal Chest. Dr. Koenig completed medical school at New York Medical College and did both his residency and fellowship at Long Island Jewish Medical Center. In 2016 he was named Specialty Teacher of the Year at Department of Medicine Graduation.