David C. Weir, M.D.

Pulmonologists handle the quiet mechanics of breathing. David C. Weir, M.D. sees patients on the 6th floor of 156 William St in the Financial District, where office towers press against the East River and subway grates exhale warm air at rush hour.

Specialists in this field diagnose and treat conditions that affect the lungs and airways—chronic coughs, asthma, sleep apnea, COPD, and interstitial lung disease. The practice also addresses pulmonary hypertension and offers pulmonary function testing, often the first step in understanding why oxygen feels scarce.

New York’s humidity and seasonal allergens can turn a simple breath into a chore. Those who need a clearer airway or a diagnosis that explains persistent shortness of breath can reach the office at (646) 962-5665 to schedule an appointment.

For directions, the building sits between Fulton and John streets, steps from the South Street Seaport’s cobblestones and the Brooklyn Bridge’s steel cables. A map is available here.