Along with doctors, attorneys, dentists, veterinarians, and other professionals, all states require anyone wishing to be a nurse to first obtain a state license. If you engage in nursing without that license, you commit the crime of practicing nursing without a license.
As with other professions that impact the health and well-being of others, the dental profession is tightly regulated by each state. Anyone who wishes to work as a dentist in any state must first receive the legal authority to do so by acquiring a state dental license. State license requirements differ slightly, but all states make it a crime to practice dentistry without having a license.
Like many other professionals, attorneys must have a license before they can practice law in any state. While license requirements differ slightly from state to state, all states make it illegal to engage in the practice of law without first obtaining a license. Anyone engaged in the practice of law without a license commits a criminal act.
Most state laws require tattoo artists and establishments to have appropriate licensure from the state or local government. Tattooing without a license can result in professional and criminal penalties.
Question: I was hurt after I went to a "healer" who made my condition worse. I think he was masquerading as a doctor. Will that fact alone entitle me to some money damages? Answer: Only licensed doctors may provide medical services; "healers" are not licensed.