ISB

BCBS Prefix ISB

Premera Blue Cross Blue Shield of Alaska

Alaska • HMO, Medicaid, EPO

Billing essentials

Provider phone
(800) 722-1471
Electronic payer ID
00430
Claims mailing address
P.O. Box 91059, Seattle, WA 98111
Timely filing limit
365 daysCompare all plans
Prior authorization phone
(800) 722-1471

Coverage under prefix ISB

HMO

This prefix is linked to an HMO plan. Health Maintenance Organization coverage requires members to use in-network providers and coordinate care through a designated primary care physician. Referrals are typically required for specialist visits. Claims submitted without proper referral documentation may be denied.

Medicaid

Under this prefix, the member may have Medicaid coverage managed by this BCBS plan. Medicaid claims have specific rules around cost-sharing, balance billing, and timely filing that override the plan's standard commercial policies. Contact the plan's Medicaid provider services line for submission details.

EPO

This prefix is associated with an EPO plan. Exclusive Provider Organization coverage combines elements of HMO and PPO plans: members must stay in-network like an HMO, but can self-refer to specialists like a PPO. Out-of-network services are not covered except for emergencies.

About Premera Blue Cross Blue Shield of Alaska

Premera Blue Cross has operated in Alaska since 1957. Serves over 500,000 members. Part of the Blue Cross Blue Shield Association.