Altova is well known for it's flagship product XMLSpy - as anyone who has worked extensively with XML data can tell you. However, they have an entire suite of product offerings, one of which is MapForce. As described on it's website:
A typical Healthcare Information Exchange (HIE) accepts data from an array of disparate sources. Often the data it accepts is semantically and syntactically altered by a providing system to satisfy interfacing requirements. However, there are also cases where data from different sources need to be properly merged before reaching the HIE's interface.