Other than MedRec ,we have something called BurstIQ.

BurstIQ – AI + Blockchain for Healthcare Data (2015-Present)

BurstIQ is revolutionizing healthcare by merging blockchain and AI to create a secure, intelligent ecosystem where patients truly own their data, organizations can exchange insights without compromising privacy, and advanced analytics unlock hidden patterns in disease, drug interactions, and public health. By enabling a decentralized yet highly structured flow of medical information, BurstIQ not only empowers individuals but also fuels a more collaborative and data-driven future for healthcare innovation.