Abstract: A health information services provider (HISP) application includes a controller, a transaction engine, a data encryption engine, an authentication engine, a user interface engine and a registration engine. The controller manages the core functions and transmission to the different components of the HISP application. The transaction engine routes messages and requests for joining a grid. The data encryption engine encrypts or decrypts messages. The authentication engine verifies messages. The user interface engine generates a user interface for exchanging healthcare information between providers. The registration engine registers providers to exchange healthcare information with other providers.