Barry L Diener, MD

Dr. Barry Diener is a pulmonologist who specializes in lung and breathing disorders. He earned his medical degree from New York Medical College and completed his residency at Maria Fareri Children's Hospital at WMC in 2011. Dr. Diener furthered his training with a fellowship at Children's Hospital of Philadelphia in 2014, bringing 18 years of experience to his practice. He speaks English.

Dr. Diener is affiliated with Stony Brook University Hospital and practices at multiple locations throughout Long Island, including Commack, Lake Grove, and Smithtown. He treats patients with apnea, asthma, and breathing difficulties. His expertise includes pulmonary function testing and bronchodilator reversibility testing to evaluate lung health. Dr. Diener also performs asthma challenge tests to help diagnose and manage breathing conditions.