Dr. Shaffer is awesome! I went a few times last year when my back was just killing me. Not only is he professional, but he is likely the most personable doctor you will ever meet. He remembers what you are talking about from visit to visit, he seems to actually check your chart from time to time - which is lacking in so many other doctors.
All in all, if your back has a twinge, Dr. Shaffer will get you straightened out!