In my opinion Dr. Tierney is as professional as a surgeon can be. He answered all my questions that my family and I had before procedures & surgery in a language we could all understand and drew simple diagrams regarding the procedures so we could get a better understanding of what was to happen. He was available 24/7 and visited me frequently while in the hospital. I was kept comfortable and completely pain free while under his care. Not enough space here to express my gratitude to him.