Vanguard Health Systems, Inc. (NYSE: VHS) (the “Company”) announced today that the Company will host an analyst and investor day and facility tour in Detroit, Michigan on Thursday, June 21, 2012, from 8:30 a.m. to 1:00 p.m. Eastern Time. Institutional investors and analysts that would like to attend or receive more information regarding the Company’s analyst and investor day should contact firstname.lastname@example.org. For those unable to attend, the formal presentations will be available via webcast live on the Investor Relations section of the Company’s website at http://www.vanguardhealth.com. The webcast will be archived for 90 days. About Vanguard Health Systems www.vanguardhealth.com The Company owns and operates 28 acute care and specialty hospitals and complementary facilities and services in metropolitan Chicago, Illinois; metropolitan Phoenix, Arizona; metropolitan Detroit, Michigan; San Antonio, Texas; Harlingen and Brownsville, Texas; and Worcester and metropolitan Boston, Massachusetts. The Company’s strategy is to develop locally branded, comprehensive healthcare delivery networks in urban markets.