Contact phone numbers for hospital and professional claims are listed on the back of the ID card. For all hospital claims, members should contact Premera Blue Cross at 800-562-1011. The contact phone number for professional claims in eastern Washington is 800-562-1011 (except Walla Walla, Clarke, Garfield, Columbia & Asotin counties). For professional claims inquiries in Western Washington contact Regence BlueShield at 800-552-0733.