OSHIP builds on an extensive set of specifications for healthcare information systems of all sizes. The focus of these specifications are to provide implementability, interoperability and computability in a world where these three do not typically exist.
Any serious health informations systems professional will give the specifications a serious review and realize that they have been developed over two decades, with a continuing eye towards quality at all levels.
The specifications as well as the OSHIP source code are licensed for open source or proprietary use.
See the links or email the lead developer for more information.