Dr. Tetteh is a member of the Washington Regional Transplant Community; serves as a cardiothoracic staff surgeon at INOVA Fairfax Hospital and consultant to Cardiac Vascular and Thoracic Surgery Associates, (CVTSA) in Falls Church, Virginia and Washington Hospital Center in Washington, D.C. He also has academic appointments as an assistant professor of surgery at the Uniformed Services University of the Health Sciences in Bethesda, Maryland and adjunct professor of surgery at Howard University in Washington, D.C.