Kassenärztliche Bundesvereinigung = Federal/National Association of (National) Health Service Accredited/Participating General Practitioners. This is what it is but not the name of any real association that I know of.

http://www.kbv.de/ -

The above site gives the full German name but no official translation. So far I have not found an association name for the UK or US with exactly the same meaning. I rather doubt that the AMA or BMA have this "Health Service Participation" criterion for membership. Those two organizations are more like the Bundesärztekammer. If nobody can give you the name of an exactly corresponding British or American association, you may have to transexlateplain it something like the tapeworm "name" above. - HTH - Dan