Exhibit 99.1 Pioneer Behavioral Health 200 Lake Street, Suite 102, Peabody, MA 01960 (978) 536-2777 Fax (978) 536-2677 December 20, 2005 Dear Shareholder: In an effort to reach as many shareholders as possible, we have adjourned the annual shareholders meeting scheduled for December 20, 2005 until January 31, 2006 at 11:00 a. m. Enclosed please find a new proxy card with return envelope. Please complete and mail at your earliest convenience. Thank you for your continued support. Very truly yours, /s/ Bruce A. Shear _______________ Bruce A. Shear President & CEO