About us. Bucks County Center for Vein Medicine and Kowalski Surgical Center is an independent private surgical practice in Langhorne, PA. We specialize in the treatment of varicose veins and venous insufficiency. We are professional, agile and fun group of people dedicated to the outstanding care of our patients. Our Vein Clinic is looking for a part time Registered Vascular Ultrasonographer to support the team by performing venous exams and int...