The manuscript includes the current health care status and role of ICT in medical field specifically in India. The system proposed in this manuscript is based on the knowledge based expert system. So, it also includes the classification of the expert system and applicability of expert system in medical field. Emergency medicine and the basic assessment tools which are needed as a part of pre-hospital medical care are also included in this manuscript. Ontology is the prime component in the semantic web. So, here the concept of ontology and how to make the ontology from the elicited knowledge-base is also included. The system proposed here utilizes the java-based client-server MVC architecture. JENA API is used for integration between knowledge-base stored in OWL format with JAVA servlet. The system takes the vital parameters for primary assessment of patient’s condition from the EM paramedic from the client-side and passes this information to the server-side where the primary risk level stratification will be calculated by the ontology and score is available to the paramedic.