Arizona Heart Institute was founded by Edward Diethrich[1] in 1971.
In 2009, the institute paid the American Federal government USD$675 000 in re-imbursement for ten carotid artery stenting procedures which were billed to, but not covered by, Medicare.[2]
The Institute filed for chapter 11 bankruptcy protection in 2010, ultimately being entirely sold to Vanguard Health Systems's subsidiary company Abrazo Health Care.[3][4][5][6] Purchasing the Arizona Heart Institute lead Abrazo to begin clinical trials at other facilities it owned as well.[7]