Submit medical and vision claims for any service by Premera contracted providers, or any provider in WA or AK:
Premera Blue Cross
P.O. Box 91059
Seattle, WA 98111-5159
Submit claims for services outside of WA or AK to the local Blue Cross Plan.
Submit Medicare*, member paid claims, dental* and time loss claims:
NW Plumbers Trust
P.O. Box 34684
Seattle, WA 98124-1684
*Medicare and Dental claims can be submitted electronically through Change Healthcare Group F31 payer ID 91136. Note: Medicare claims are routed through the Medicare Cross Over program.