Mary M O'Sullivan

Mary M O'Sullivan, MD

  • ASSISTANT PROFESSOR | Medicine, Pulmonary, Critical Care and Sleep Medicine


Pulmonary Medicine

Over the past three decades, Dr. Mary O’Sullivan has dedicated a significant portion of her medical career to educating professionals, patients, public health officials and legal communities about the positive impact of smoking cessation on overall health. She regularly leads smoking cessation trainings and nicotine replacement programs. Her findings have been presented in scientific journals, at medical and law symposiums and to hospital staff and students. She has published various related articles and influential book chapters. Dr. O’Sullivan also reviews manuscripts for Journal of Asthma.

A committed and engaged educator, Dr. O’Sullivan provides development and direction for the smoking cessation clinics at both Mount Sinai St. Luke’s and Mount Sinai Roosevelt in New York City. At St. Luke’s, she is also an academic chief of the hospital’s Chest Clinic. She is co-director of the Mount Sinai Health System’s Pulmonary Critical Care Fellowship Program, a position she took in 1995 after serving as the program’s director since 1981. In addition, Dr. O’Sullivan provides oversight to the smoking cessation training for the Cardiovascular Disease Prevention Program at Mount Sinai Health System, and precepts Columbia University medical students and Long Island University pharmacy students in asthma and smoking cessationclinics.

Dr. O’Sullivan belongs to the American Thoracic Society and the American College of Chest Physicians. She is a member of the advisory boards of the New York Legal Assistance Group and the Lung Cancer Alliance.


Pulmonary Disease

American Board of Internal Medicine


MD, Weill Cornell Medical College

Internship, Internal Medicine, St. Luke's-Roosevelt Hospital Ctr.

Residency, Internal Medicine, St. Luke's-Roosevelt Hospital Ctr.

Residency, Internal Medicine, St. Luke's-Roosevelt Hospital Ctr.

Fellowship, Pulmonary Medicine, St. Luke's-Roosevelt Hospital Ctr.

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