About STS

Founded in 1964, The Society of Thoracic Surgeons is a not-for-profit organization representing more than 7,600 surgeons, researchers, and allied health care professionals worldwide who are dedicated to ensuring the best possible outcomes for surgeries of the heart, lungs, and esophagus, as well as other surgical procedures within the chest.


Advance cardiothoracic surgeons' delivery of the highest quality patient care through collaboration, education, research, and advocacy


Improving the lives of patients with cardiothoracic diseases

Core Values

Diversity, Equity, and Inclusion


STS has approximately 80 employees and is headquartered in Chicago, with an additional office in Washington, DC.

STS Fact Sheet

View the STS Fact Sheet, a high-level overview of the Society, its members, and activities.

Contact the Society

Chicago Headquarters

The Society of Thoracic Surgeons
633 N Saint Clair St, Suite 2100
Chicago, IL 60611
Phone: 312-202-5800

Contact STS

Washington, DC

STS Government Relations
20 F St NW, Suite 310 C
Washington, DC  20001-1230
Phone: 202-787-1230

Contact Advocacy