Arizona Heart Institute is a cardiovascular medical center in Phoenix, Arizona, United States founded by Edward Diethrich in 1971.[1]

In 2009, the institute paid the US government US$675 000 in re-imbursement for ten carotid artery stenting procedures which were billed to, but not covered by, Medicare.[2] These expenses and others led the institute to file for chapter 11 bankruptcy protection in 2010, ultimately being entirely sold to Vanguard Health Systems's subsidiary company Abrazo Health Care.[3][4] Purchasing the Arizona Heart Institute led Abrazo to begin clinical trials at other facilities it owned as well.[5]

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