If you don't like the way they treat you and speak up about it, they will threaten to take legal action against you. They coerce patients into signing away their right to complain about poor treatment (eg: you wanna see a refund for any reason, even for something what was their fault? You'd better comply!).
When I went for a check up (August 2017) their office convinced me to be fitted for a night guard. I only agreed after one of their staff members assured me that it's covered by my insurance. They told me that I would only have to pay my deductible (which is $50) and come back in a couple of weeks to pick it up. A few days after my appointment, I checked my insurance claim online and noticed something off. I contacted my dental plan and they told me that night guards are absolutely not covered and that my claim is in the process of being denied. By the way, the night guard is over $300! I contacted the Greentree office and they were very unhelpful. They rushed to end the conversation and gave me very vague information (ie: they need to get in touch with the lab, then it became they're waiting to hear back from the lab, etc). I've contacted twice in over two weeks and got nowhere in terms of a resolution or real answers as to what's going on. Not once did they reach out to me proactively, despite telling me they will get in touch (I had to call first every single time). They did nothing to keep me abreast of the situation nor showed some sort of transparency regarding the process. And what does the lab have to do with the situation to begin with? One of their employees gave me wrong information (whether through negligence or on purpose) to get me to pay for a product that I would've otherwise declined. They should have offered me a refund the first time I contacted them with the right information. I even told them that I can't afford $300. Their response was some non-committal drivel about "waiting for the lab."
And to make it even better, they finally got in touch with me when I made a review (this review) detailing their dishonesty. They tried to force me to sign a document to shut me up. They told me they can't give me any of my money until I do so and it's just "company policy." This contract would allow them to take legal action against me every time I spoke or wrote about their company in a way that they don't like. That seemed really offensive to me so I sought legal advice on the matter. Multiple attorney friends told me that they can't sue patients for making factual statements on review websites - which their owner threatened to do to some other reviewers on Yelp - and signing away my first amendment rights is worth a lot more than just some dental work. After presenting their management team with a counter contract on how to iron this situation out, they've since ignored me. Apparently, they don't like the taste of own medicine.