North Shore Pulmonary Associates is the practice of Drs. David M. Breidbart, MD, Denise Janus Ruttgeizer, MD, Paul Kuperschmid, MD, Jason B. Karp, MD, Deborah M. Ushkow, MD, Leonard J. Landesberg, MD, David M. Katz, MD, and Jay S. Berland, MD. This team specializes in pulmonary care, critical care and sleep medicine. North Shore also treats disorders such as asthma, emphysema, sleep apnea and insomnia.