The treatment of peripheral artery disease with catheter-based, minimally-invasive procedures to restore blood flow in blood vessels beyond the coronary (heart) vessels are performed by interventional cardiologists with specialized training in this area. Angioplasty and stenting are two of the most common procedures they perform on upper extremity (subclavian) arteries, lower extremity (leg) arteries, carotid and renal (kidney) arteries.