I went to see Dr. Engelson to have one very small cavity filled. I was told it would be a quick, simple procedure but it promptly turned into a nightmare when the filling fell out THREE TIMES within 7 months! The first time it fell out was less than a month after it was put in! It happened on a Sunday and even though I left messages on the "emergency" answering service making it very clear that I was in too much pain to eat or drink, no one returned my call for over 12hrs.
The second time it fell out, no one could "squeeze me in" for 3 days. The third time I went to a different dentist who managed to fix it on the first try--and the same day--but of course that meant I had to pay all over again.
Dr. Engelson and her office never successfully provided the service I paid for, but they tossed in pain and suffering for free. Clearly, a Park Avenue address doesn't guarantee quality.