Epstein served as the architect of record for the new headquarters for the American Society of Anesthesiologists (ASA).

The new ASA Headquarters is 71,000 square feet, designed to be expandable to 100,000 square feet, and provides offices for member support, education and communication departments as well as other society services.

In addition to typical office and amenity spaces, the ASA Headquarters includes some very special functions such as a museum of anesthesiology, an extensive library (including a rare books collection) and auditorium.

The newly-expanded Wood Library-Museum (WLM) of Anesthesiology also resides in ASA's new Schaumburg headquarters. The WLM celebrates the story of the profession of anesthesiology using electronic media and graphics, and display devices and artifacts that are creatively integrated throughout the building.