Vanguard Health Systems, Inc. Invites You to Join Its First Quarter 2007 Earnings Conference Call Webcast

In conjunction with Vanguard Health Systems, Inc.’s First Quarter 2007 earnings press release, you are invited to listen to its conference call that will be broadcast live over the Internet on November 9, 2006 at 11:00 a.m. Eastern time with senior management of Vanguard discussing the operating results.

 WHAT:     Vanguard Health Systems, Inc.’s First Quarter 2007           Earnings Conference Call on the Web WHEN:     Thursday, November 9, 2006 at 11:00 a.m. Eastern time WHERE:    http://www.vanguardhealth.com or           http://www.visualwebcaster.com/event.asp?id=36156 HOW:      Live over the Internet — Simply log on to the web at one           of the addresses above. If you connect through           www.vanguardhealth.com, select “First Quarter Webcast” from           the home page. CONTACT:  Aaron Broad, Investor Relations, at (615) 665-6131 or           abroad@vanguardhealth.com 

Vanguard Health Systems, Inc. will release its 2007 first quarter operating results on Wednesday, November 8, 2006, after 4:00 p.m. Eastern time. The Company’s earnings press release will be posted under the “Latest News” link on the Investor Relations page of the Company’s web site www.vanguardhealth.com

Vanguard Health Systems, Inc. owns and operates 16 acute care hospitals and complementary facilities and services in Chicago, Illinois; Phoenix, Arizona; San Antonio, Texas and Massachusetts.

If you are unable to participate during the live Webcast, the call will be archived on our Web site www.vanguardhealth.com. To access the replay, click on the First Quarter Webcast on our home page or on the “Latest News” link on the Investor Relations page of our Web site.

 CONTACT: Aaron Broad Investor Relations (615) 665-6131 Contact via http://www.marketwire.com/mw/emailprcntct?id=5AFA303E1EF80C64  

SOURCE: Vanguard Health Systems