Varies by jurisdiction, but there are a lot of places, including many areas in the USA, where this is very much an issue, affecting licensing and credentialing.

Varies by jurisdiction, but there are a lot of places, including many areas in the USA, where this is very much an issue, affecting licensing and credentialing. Would it survive a court challenge? Probably not, but I don't know a lot of doctors who would take the risk of reputation, career prospects, lost income, etc. to find out.