Hello, I'm glad to answer your question. To report a private dentist without a license, we can call directly. 12320. You can also complain to the health bureau or the medical association of the local food and drug administration, and you can also report to the procuratorate if you want to pursue criminal responsibility. It is best to provide evidence or clues to prove the facts of the crime and report complaints to the health administrative department. I hope my answer is helpful to you, and I wish you a happy life!