Conflict of Interest Disclosures: Dr Baicker reported receiving grants from the National Institute on Aging (P01 AG005842) during the submitted work; and serving on the board of directors for Eli Lilly and Mayo Clinic outside the submitted work. Dr Obermeyer reported receiving research grants from the Chan Zuckerberg Biohub, Google, the Gordon and Betty Moore Foundation, Ken Griffin (private philanthropy), the National Institutes of Health, and Schmidt Futures; receiving speaking or consulting fees from AcademyHealth, Anthem, the Attorney General of California, Blue Cross Blue Shield Tennessee, the Health Management Academy, Independence Blue Cross, and Premier Inc; having equity interests in Dandelion Health and LookDeep Health; and receiving compensation as a staff physician at Tséhootsooí Medical Center outside the submitted work.