This paper proposes a Next-Generation Smart Healthcare System with Secure Cloud Integration, incorporating Aadhaar-based authentication to enhance the efficiency, reliability, and security of healthcare services. The system utilizes authentication mechanisms provided by the Unique Identification Authority of India (UIDAI) to uniquely identify patients, thereby eliminating duplication and preventing identity fraud. Upon successful verification, encrypted Electronic Health Records (EHRs) are securely stored and managed on a cloud platform, enabling authorized access for healthcare providers anytime and anywhere.

The proposed architecture supports real-time data updates, seamless interoperability across multiple healthcare institutions, and automated electronic prescription generation, thereby improving clinical decision-making and patient care. Advanced security measures, including role-based access control and end-to-end encryption, ensure data confidentiality, integrity, and privacy. By integrating smart technologies with cloud computing, the system delivers a scalable, cost-effective, and patient-centric digital healthcare ecosystem