MELVILLE, NY, March 13, 2006 – Allion Healthcare, Inc. (“Allion”) (NASDAQ: ALLI), a national provider of specialty pharmacy and disease management services focused on HIV/AIDS patients, announced today that it has completed the acquisition of certain assets, including customer lists and inventory, from H.S. Maiman RX, Inc. ("Maiman") for a consideration of $5.25 million in cash. Maiman reported unaudited revenue of $11.2 million for the twelve months ended December 31, 2005.

"We are pleased to announce our first 'file buy' or customer list acquisition in 2006," commented Mike Moran, Allion's President and Chief Executive Officer. "Our decision to purchase Maiman's assets was based on several important criteria. We recognized an opportunity to expand our well- established and growing presence in New York, execute our acquisition strategy and drive sales growth. As we have guided with prior acquisitions, we feel confident that we can seamlessly integrate patients over the upcoming months into our existing operations and report meaningful contribution to our top and bottom line."

Located in Brooklyn, New York, Maiman has built a reputation of providing high quality pharmacy services to its customers, including a large concentration of HIV patients, for over 30 years.

About Allion Healthcare, Inc.
Allion Healthcare, Inc. is a national provider of specialty pharmacy and disease management services focused on HIV/AIDS patients. Allion Healthcare sells HIV/AIDS medications, ancillary drugs and nutritional supplies under the trade name MOMS Pharmacy. Allion offers nationwide pharmacy care from its pharmacies in California, New York, Washington, and Florida. Allion Healthcare works closely with physicians, nurses, clinics, AIDS Service Organizations, and with government and private payors, to improve clinical outcomes and reduce treatment costs for patients.

Safe Harbor Statement
Certain statements included in this press release, which are not historical facts, are forward-looking statements. Such forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements represent our expectations or beliefs and involve certain risks and uncertainties, including those described in our public filings with the United States Securities and Exchange Commission; also including, but not limited to, competitive pressures, changes in customer mix, changes in third party reimbursement rates, changes in government regulations or the interpretation of these regulations, growth opportunities, cost savings, revenue enhancements, synergies and other benefits anticipated from acquisition transactions, difficulties relative to integrating acquired businesses, the accounting and tax treatment of acquisitions, and asserted and unasserted claims, which could cause actual results to differ from those in the forward-looking statements. The forward-looking statements by their nature involve substantial risks and uncertainties, certain of which are beyond our control, and actual results may differ materially depending on a variety of important factors. You are cautioned not to place undue reliance on these forward-looking statements that speak only as of the date herein.


Contact:
Allion Healthcare, Inc.
Jim Spencer, Chief Financial Officer
(631) 870-5126

The Ruth Group
Francesca DeMartino, Investor Relations
(646) 536-7024; fdemartino@theruthgroup.com