1, there should be no doctor's license, so "practicing medicine without a license".
2. If you have a doctor's license, you can complain to the issuing department and revoke your license (because you have seriously violated the basic code of ethics and behavior of doctors, and there is no "one-size-fits-all" medicine in the world)!
3. "He said he could cure all diseases." . This behavior has the fact of spreading false and exaggerated advertisements! Public security and other law enforcement departments can handle this "advertisement" according to law! (Slight verbal warning and rectification; If you don't listen to the warning and don't rectify, you can be detained by the administration or even prosecuted and sentenced by the court.)