I have been going to Dr. Hayashi for at least 15 years, and also served by Dr. Duffala for at least 7 or 8. My wife has been going to them for 6 years. My teeth are in excellent shape, which I attribute to them. When my wife or I have had some urgent needs, they've always been able to get us in for a visit as soon as we needed. Dr. Hayashi is big on preventative methods and taking care of the whole patient, not just filling teeth, which is probably why I haven't had any big dental issues.
In general, I wouldn't trust Web sites like this. Happy patients don't look for new dentists, and therefore would never find this site and write a review.