Abstract: The rapid growth of digital healthcare services has introduced significant challenges in data security, privacy, interoperability, and real-time access to medical resources. Traditional centralized healthcare systems are vulnerable to data breaches, unauthorized access, single points of failure, and inefficient emergency response mechanisms. To address these issues, this paper proposes MEDILOCATOR – a Blockchain-Based Secure Healthcare Locator, an intelligent and decentralized platform designed to provide secure healthcare discovery, appointment management, and emergency assistance services.
The proposed system integrates blockchain technology, real-time data synchronization, geolocation services, and AI-based symptom triage to deliver a secure, transparent, and patient-centric healthcare ecosystem. Blockchain ensures tamper-proof storage, data integrity, decentralized authentication, and transparent medical transaction tracking, thereby eliminating unauthorized data manipulation and enhancing patient trust. The system enables users to locate nearby hospitals, clinics, and specialists based on real-time availability, geographic proximity, and healthcare requirements.
In emergency scenarios, MEDILOCATOR supports automated emergency triggering, live ambulance tracking, and dynamic ETA estimation, ensuring rapid response and life-saving interventions. An AI-driven symptom triage module assists patients in assessing the severity of symptoms and recommends appropriate medical departments, reducing unnecessary hospital visits and improving clinical workflow efficiency. Additionally, smart appointment scheduling, real-time doctor availability updates, and secure digital health records contribute to improved service accessibility and operational efficiency.
Experimental analysis and system evaluation demonstrate that MEDILOCATOR significantly enhances data security, response time, scalability, transparency, and user experience compared to traditional healthcare platforms. The proposed architecture provides a robust foundation for next-generation decentralized healthcare systems and contributes toward the development of secure, intelligent, and resilient digital health infrastructures.

Keywords: Blockchain, Healthcare Locator, Secure Data Transmission, Smart Contracts, Emergency Response System, AI-Based Symptom Analysis, Real-Time Monitoring, Distributed Ledger Technology, Medical Data Privacy, Appointment Scheduling.

Downloads: | DOI: 10.17148/IARJSET.2026.13233