I never accused you of lying. I just question whether there is one authentic “board of doctors” which can certify the qualifications of all practitioners. You may personally give credence to one or another board but that doesn’t make it the final authority applicable to all.
My family “doctor” consults a different book which he says has MORE authority. Therefore the Board (who adheres to the final authority’s “Book”) is authorized to make a determination.
The determination wasn't unanimous, but in the case of this particular doctor, it has been determined by a vast majority that my doctor is indeed a fraudulent quack. You however are free to consult with him regarding your health. It is your right....as long as he doesn't call himself a doctor and hang a fallacious certificate in order to deceive you. As long as he does this, he is subject to censure.