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’s best vein doctors. IAC-accredited. At USA Vein Clinics, you can get care from leading vein doctors in your area. Schedule Online or Call 888.768.3467 to book your initial visit. When you schedule online, you can verify your insurance in real-time. For your convenience, we also offer affordable payment options.