Give us a call today at 877-617-2111 or visit xo.com © 2012 XO Communications, LLC. All rights reserved. Customer Fresenius Medical Care (FMC) is a worldwide provider of dialysis products and services. The company is based in Germany, with North American operations headquartered in Lexington, Massachusetts, and additional data centers in Nashville, Tennessee. In March 2006, FMC completed its acquisition of Renal Care Group, a customer of XO

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