Securing critical healthcare infrastructures like hospital networks, Electronic Health Record (EHR) systems, and the Internet of Medical Things (IoMT) is paramount for patient safety. This paper proposes an implementation of a Quantum Zero-Knowledge Proof (QZKP) designed for robust authentication in these sensitive environments. The protocol allows a clinician or medical device to prove its identity to a specific verifier without transmitting any secret credentials that could be intercepted. This protocol ensures security through the inherent randomness of quantum state projections in misaligned bases. The results demonstrate the protocol’s robustness against dishonest parties while maintaining feasibility under constrained quantum resources, making it a promising approach to guarantee medical device integrity and patient data confidentiality in the quantum era.