Dr. Mary O'Sullivan, MD, is a highly respected pulmonologist and critical care medicine specialist based in New York, NY, boasting over 48 years of experience in the medical field. She graduated with her Doctor of Medicine degree from Weill Cornell Medicine in 1975 and completed her residency and fellowship training in Internal Medicine and Pulmonary Disease at Saint Luke's-Roosevelt Hospital Center, further honing her skills through additional training at Henry Ford Hospital and Mount Sinai. Dr....