Dr. Knopf put a crown on my tooth, I told him it did not feel right , he said it was fine and walked away. Received a bill for almost another 400.00. Office never spoke about extra fee, until after procedure. I informed office I had concerns about that, wrote a review prior to this one, got a phone call a few minutes later saying they read review and if balance was not paid they were sending to collections. Phone call was very hostile.
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