Microsoft and Mayo Clinic Announce Collaboration to Build Frontier AI Model for Healthcare — Clinical Records and Longitudinal Patient Data as Foundation

Mayo Clinic and Microsoft announced on June 2, 2026, a formal collaboration to build a frontier AI model trained on Mayo's de-identified clinical records, longitudinal patient data spanning decades, and institutionally validated clinical expertise. The model is designed to support earlier diagnostics, personalized treatment decision support, and patient-facing AI health assistants through Mayo's online patient portal. Uniquely, Mayo Clinic will own the resulting model and retains licensing rights to share it with other health institutions worldwide — positioning this as a 'health system-owned' AI rather than a vendor-controlled product. The partnership was framed partly as a response to the estimated 75% of US health systems now using at least one AI application (up from 59% in 2025), combined with a documented surge in patients using general-purpose AI chatbots for health questions without clinical validation. The collaboration targets multiple clinical domains including drug discovery, protein modeling, clinical trial design, and medical diagnostics, with the explicit goal of expanding access to Mayo-level clinical expertise beyond the institution's physical footprint to underserved hospitals and international health systems.