If you are a foreigner -- even if you speak close-to-perfect German -- do not go there. Woman at…read morethe reception talks to you like you are an idiot, instead of explaining simple things.
I went there for a regular check-up and the doctor somehow managed to perform it in a painful way, which I never had with any other doctors. She said something like "oops" and apologized but the whole thing just did not seem quite professional to me.