{"ein":"383952644","kind":"nonprofit","verification":"irs-listed","name":"MAYO CLINIC GROUP RETURN","ntee":"E21","city":"ROCHESTER","state":"MN","revenue":14891458272,"assets":17859698606,"sourceName":"IRS Exempt Organizations Business Master File extract","sourceUrl":"https://www.irs.gov/charities-non-profits/exempt-organizations-business-master-file-extract-eo-bmf","lastChecked":"2026-07-05"}