USA Vein Clinics is the largest network of outpatient vein clinic in America. We are proud to offer multiple convenient Chicago and Illinois vein center locations to make access to quality vein care and treatment accessible with some of Chicago. At USA Vein Clinics, we’re the most experienced in the treatment of vein disease. Our network of providers specialize exclusively in varicose and spider veins at every varicose vein clinic near you.