NxStage Announces Investor Conference Schedule

Wednesday August 6, 2008

LAWRENCE, Mass., Aug. 6 /PRNewswire-FirstCall/ — NxStage Medical, Inc. (Nasdaq: NXTM), a leading manufacturer of innovative dialysis products, today announced that Jeffrey H. Burbank, Chief Executive Officer and Robert Brown, Chief Financial Officer, will participate in the following schedule of investor conferences. Where possible, a webcast of each event will be made available at http://www.nxstage.com/ir.cfm at the time of each conference.

Canaccord Adams Annual Global Growth Conference
Boston, MA
InterContinental Boston Hotel
Tuesday, August 12, 2008
9:00 a.m. EDT

Thomas Weisel Partners Healthcare Conference
Boston, MA
Four Seasons Hotel
Friday, September 5, 2008
8:35 a.m. EDT

UBS Global Life Sciences Conference
New York, NY
Grand Hyatt Hotel
Monday, September 22, 2008
Time to be determined.

About NxStage Medical

NxStage Medical, Inc. (Nasdaq: NXTM) is a medical device company, headquartered in Lawrence, Massachusetts, USA, that develops, manufactures and markets innovative products for the treatment of end-stage renal disease, or ESRD, and acute kidney failure. For more information on NxStage and its products, please visit the company’s website at http://www.nxstage.com.

Forward-Looking Statements

This release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements contained in this release that are not clearly historical in nature are forward-looking, and the words anticipate, believe, expect, estimate, plan, and similar expressions are generally intended to identify forward-looking statements. Examples of these forward-looking statements include statements as to Messrs. Burbank and Brown’s plans to present at these conferences. NxStage specifically disclaims any obligation to update these forward-looking statements. These forward-looking statements should not be relied upon as representing NxStage’s expectations or beliefs as of any date subsequent to the date of this press release.

Contact:
Kristen K. Sheppard, Esq.
Investor Relations
ksheppard@nxstage.com

SOURCE NxStage Medical, Inc.

Web site: http://www.nxstage.com