Health Telematics Networks (HTN) are characterized by a complex setup and interrelations. Using available tools and methods focusing on mainly one aspect, e.g. its functionality or the network infrastructure leads to a restricted view. The objective of this paper is to assess the applicability of the Revised Three-layer Graph-based Meta Model (3LGM²) - developed for modeling hospital information systems - towards health telematics networks. Having identified an approach on how to represent the hospitals effectively in the model the 3LGM² proved to support strategic management, day-to-day maintenance and documentation.