Because… all we do is treat vein disease! Dr. McWilliams has performed thousands of minimally invasive, catheter-based, and ultrasound-guided vascular procedures. His focus is on treating patients with varicose veins, chronic venous insufficiency, venous stasis, and/or leg ulcers. Dr. McWilliams is a highly qualified, well-respected, board-certified physician in the western suburbs of Chicago. He has made this profession and passion his life’s work.