Nelly wants to become the biggest fintech startup in the healthcare industry. The Berlin-based startup is already working with more than 1,200 medical practices in a handful of European countries. But there are thousands more that could benefit from an upgrade for their administrative workflows. That’s why Nelly recently raised €50 million in funding (around $51 million at current exchange rates) in a Series B round led by Cathay Innovation, along with Notion Capital. Existing investors b2ventur...