/u/commiespaceinvader has answered this question previously here. Here's a quote that I think sums it up nicely:

The answer to this is a resounding no.

Very much contrary to popular myth - baffling that it is still around -, the Nazi medical experiments neither gave any significant advances nor were particularly scientific. These experiments were crimes under the guise of research.

It's worth a read and /u/commiespaceinvader goes on to explain how even those experiments that seem like they would have some value (such as hypothermia experiments) were based on flawed premises, flawed experimental design, and flawed analysis.

It would be great to hear more answers from people, but I think this is a good place for you to start.