With the expansion of internet and the accompanying technologies, its applications have become increasingly complicated. The significance of information technology in medical applications has been growing to encompass intent usage of medical information. This covers medical information systems, electronic prescriptions, electronic medical records, etc. Despite growing research on the structure and organization of data processing in many interconnected systems, integration is still inadequate. This study suggests a consolidated medical information system with reliable privacy shield that uses a zero-knowledge undeniable signature scheme over tropical algebra. As tropical algebra is less computationally demanding than other non-abelian groups, it is an easier platform to implement our scheme. The security analysis of the scheme has also been explored.