It’s difficult to say that someone is “the best” at something, especially when it comes to sports. How do you determine the No. 1 golfer? Since it’s based on performance, it might be one person this week, and a different one the next.

But when it comes to cancer treatment, I think there’s a clear leader: MD Anderson. I’d always heard it was the No. 1 cancer treatment center in the world. But I don’t think I really understood what...