Training and regulation of naturopathic practitioners varies from country to country. This site discusses naturopathy as practiced by licensed NDs in the United States and Canada. I use the term ND, short for naturopathic doctor, to distinguish from naturopathic practitioners who have significantly different training, both within and outside the USA.
I see a lot of confusion in many blog posts regarding how the US licenses and regulates healthcare providers. Briefly, it’s done at the state level, not the federal level. And yes, NDs are subjects to HIPAA regulations, and know about them, and yes, NDs can be sued for malpractice. For more, see US Healthcare Provider Regulation 101.
While not a skeptic site per se, this site does attempt to evaluate naturopathic medicine with tools provided by critical thinking. A document that lists some of my working assumptions can be found at Critical Evaluation. If you’re a skeptic and have stumbled upon this site, you might find A Note To Skeptics useful.