Fresenius Medical Care AG (NYSE:FMS) had an active day on the M&A trail, announcing two deals worth a combined $2.1 billion that should bolster the company’s presence in the U.S.

The German dialysis giant, which houses its U.S. headquarters in Waltham, Mass., said it will pay $1.7 billion to acquire Liberty Dialysis Holdings Inc., a privately held company out of Mercer Island, Washington, which was owned by two private equity firms KRG Capital Partners and Bain Capital.