Manhattan vein doctor Richard L. Mueller has six board certifications and holds the distinction of diplomate from the American Board of Venous & Lymphatic Medicine. Dr. Mueller is also board-certified in vascular medicine, cardiovascular diseases, and cardiac ultrasound (echocardiography).With nearly two decades of experience in cardiovascular ultrasound imaging and cardiac catheterization, Dr. Mueller has the perfect combination of skills and expertise for treating vein patients.Dr. Mueller offers private concierge medicine memberships for the select few 100 memberships! This is an exclusive status – only a limited number of memberships will be offered extended discussions, explanation, q&a, teaching / counselling & prolonged visits well beyond the minimal time reimbursed by insurance Referral network of top local & national specialist networks.