1. Kaiser Foundation Health Plan Inc.
Revenue: $51.06 billion
Kaiser Foundation Health Plan Inc. is one of the largest managed healthcare organizations in the country, with more than 11.3 million members in eight states and the District of Columbia. The hospitals and physician practices operate under the Kaiser Permanente name.
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Methodology: GOBankingRates pulled data from the IRS on all tax-exempt organizations in each state. We evaluated all tax-exempt organizations by revenue amount and ranked the top 50 highest in the U.S.
Photo Disclaimer: Please note photos are for illustrative purposes only. As a result, some of the photos might not reflect the organizations listed in this article.