Member Services

cuservices@avistacorp.com
509-495-2000


Fax

509-495-8026

Hours: Monday thru Friday 8-4 for Transactions - Lobby Hours 8-5
Located at 1411 E Mission Ave, MSC 36 - Spokane WA 99202
Mailing Address: PO Box 3727 - Spokane WA 99220