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How KHN Obtained Data For The California Hospital Prices Story
Kaiser Health News

The Kaiser Health News story on California’s Costliest Hospitals, months in the making, relied on data from a number of sources.

California hospitals generally try to keep confidential the amounts they charge commercial health insurers to care for patients. But hospitals are required to report annually to the Office of Statewide Health Planning and Development (OSHPD) the revenues they are paid by insurers, employers and patients, as well as the number of patients they treated.