If you have just moved here (New York), asking your colleagues or neighbors for a recommendation is a good idea. I have noticed that a number of my new patients have chosen my New York dental practice after doing internet searches. They report that they do a number of searches and read a number of patient reviews.
This seems to be a popular way to find dentists in our internet savvy society. People read Angies list, Yelp, City Search, Metrodentist.net, Zocdoc and Google Places while looking for a new dentist. Many carefully read the dentist reviews as a means of choosing someone they feel might be the right New York Dentist for them.
Although this type of internet search is helpful, clearly finding someone who has been to a dentist and asking their opinion is helpful in order to confirm that all a dentists 'glowing' reviews are deserved. True 'word of mouth' is still the best way to choose your dentist in New York City or any other place that you may move to.