The Service Oriented Architecture (SOA) facilitates the development of systems by supporting modular design, application integration and software reuse. Healthcare is going to change the way how patients and healthcare providers interact. The exchange of confidential and integrate information is one of the major open issues for the health care sector. In the service-oriented environment, all the services are loosely coupled. Due to the loose coupling of services, security of the services becomes more important. Required authorization by an authenticated identity and applying confidentiality techniques which ordinarily are gained via encryption, are essential for structured implementations according to Service Oriented Architecture principles.