When Dr Greenbaum did my dental implant, he miscalculated the size of the implant. When he realized that the implant was too high, he decided to drill the opposite tooth for making enough room even though it was healthy. He never informed me of what had happened. I only find out while visiting a different dentist who was surprised seeing Dr Greenbaums work.
Dr Greenbaum also decided to switch insurance networks without any notification. After months of treatment I found out that my insurance would no longer have the same coverage. Therefore, I had to cover extra out of pocket expenses as Dr. Greenbaum did not agree to honor the original agreement.