OES

BCBS Prefix OES

Anthem Blue Cross

California • Medicare Advantage, High-Deductible Health Plan (HDHP), EPO

Billing essentials

Provider phone
(855) 871-4899
Electronic payer ID
47198
Claims mailing address
P.O. Box 60007, Los Angeles, CA 90060
Timely filing limit
90 daysCompare all plans
Prior authorization phone
(888) 831-2246

Coverage under prefix OES

Medicare Advantage

Medicare Advantage (MA) coverage means this member receives their Medicare benefits through a private BCBS plan rather than through original Medicare. MA plans may have different payer IDs and claims addresses than the commercial plan. Check with the payer to confirm the correct submission details for Medicare Advantage claims.

HDHP

Under this HDHP prefix, the member's plan has a higher deductible than traditional coverage. This affects patient cost-sharing but does not change how claims are submitted or processed. Use the same payer ID, claims address, and filing procedures listed above. Verify the member's remaining deductible before estimating patient responsibility.

EPO

EPO coverage under this prefix means the member must use network providers but does not need referrals for specialist visits. This plan type is becoming more common as it offers lower premiums than PPO plans while providing more flexibility than HMOs. Verify network status before providing services.

About Anthem Blue Cross

Health insurance provider offering Medicare, Medicaid, commercial, dental and vision plans to over 8 million California members. Independent licensee of the Blue Cross Association founded in 1937.