Very respectfully, in this situation, the primary source verification would be the nursing license board, not the MSM.
Licensing boards for professionals are made easily available to the public for the very purpose of deterring misrepresentation of credentials by anyone, or any entity. For the interests of public safety, if you will. Once anyone has been represented to be a licensed health care professional, it is not inappropriate sleuthing or stalking to consult the publicly accessible nursing board databases to attempt to determine if the individual is a licensed professional. In my opinion, and the opinion of numerous professional societies, as well as the statutes in pretty much every state.