Vanguard Health Systems, Inc. (NYSE: VHS) (the “Company”) announced today that its management will participate in the Deutsche Bank Securities 37 th Annual Health Care Conference in Boston, Massachusetts. The Company’s presentation will begin at 10:00 a.m. (ET) on May 7, 2012 and will be available through a live audio webcast of the presentation. To access the webcast, listeners should go to the investor relations section of the Company’s website at http://investor.vanguardhealth.com. The Company’s management will also be presenting at the 2012 Bank of America Merrill Lynch Health Care Conference on May 15, 2012 at 3:40 p.m. (PT) in Las Vegas, Nevada. This presentation can be accessed on the investor relations section of the Company’s website at http://investor.vanguardhealth.com. If you cannot listen to the live broadcasts, a replay of the presentations will be available on the investor relations section of the Company’s website. About Vanguard Health Systems www.vanguardhealth.com Vanguard Health Systems 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. Vanguard Health Systems’ strategy is to develop locally branded, comprehensive healthcare delivery networks in urban markets.