Willis-Knighton Heart & Vascular Institute performs 500th TAVR procedure Fri, 06/12/2020 - 12:00am Wenwu Zhang, MD, interventional cardiologist with Willis-Knighton Cardiology, has performed Willis-Knighton Heart & Vascular Institute’s 500th transcatheter aortic valve replacement ...PLEASE LOG IN FOR PREMIUM CONTENT. Our website requires visitors to log in to view the best local news. Not yet a subscriber? Subscribe today! Read more about Willis-Knighton Heart & Vascular Institute performs 500th TAVR procedure