{"ein":"390452970","kind":"nonprofit","verification":"irs-listed","name":"MARSHFIELD CLINIC INC","ntee":"E300","city":"MARSHFIELD","state":"WI","revenue":596530287,"assets":663208222,"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"}