My appointment w/Dr. Sheets was at 2:00 and, when I finally double-checked w/the receptionist at 2:40 to find out if I was going to be seen, I got called into the next waiting room in the back. After 20 more minutes of waiting I decided that I couldn't really put much faith or trust in a doctor who can't see his patients w/in one hour of their scheduled appointment-time.
Unfortunately, I cannot provide a review of their services, because I never got any, but I would imagine that it is not very good. Make sure you clear your entire day if you schedule w/OGG. This was, however, my first and last visit.
BTW, I only put 'one-star' b/c 'zero-stars' was not an option.