The Vein Specialist Centers in NYC are part of a premier network of vein clinics across New Jersey and New York. Our vein clinic is located on Madison Avenue and led by Dr. Claudia Rios. A pioneer in painless sclerotherapy, Dr. Rios is a diplomate of the American Board of Vascular and Lymphatic Medicine. She is an expert in minimally invasive therapies for spider and varicose vein treatment using cutting edge therapies.