Blockchain technology has emerged as a promising solution for addressing data security and interoperability challenges in healthcare systems. This abstract provides an overview of the role of blockchain in healthcare, with a focus on ensuring patient-centric data control.The abstract begins by outlining the current landscape of healthcare data management, highlighting issues such as data breaches, lack of interoperability, and centralized data control. It then introduces blockchain technology as a decentralized, immutable ledger that enables secure, transparent, and tamper-proof recording of transactions.The abstract explores the potential applications of blockchain in healthcare, emphasizing its ability to empower patients with greater control over their health data. Through blockchain-based systems, patients can securely store and manage their medical records, control access permissions, and track data usage in real-time.