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Anthem Blue Cross

California • 1000 prefixes

Also known as: ABCBS, Blue Cross of California

Billing reference

Provider phone: (855) 871-4899
3 exceptions — check before you submit
Depends on the plan type
(855) 817-5786 — Cal MediConnect Plan (Medicare-Medicaid Plan)
(877) 687-0549 — Major Risk Medical Insurance Program (MRMIP)
(888) 285-7801 — Medi-Cal Inside L.A. County
Electronic payer ID: 47198
Verified Aug 2026 · source
1 exception — check before you submit
Depends how you submit
00423 — alternative clearinghouse routing for Anthem Blue Cross and Blue Shield
Claims mailing address: P.O. Box 60007, Los Angeles, CA 90060
Verified Aug 2026 · source
2 exceptions — check before you submit
Depends on the plan type
P.O. Box 105187, Atlanta, GA 30348 — BlueCard / Out-of-State ITS Claims
P.O. Box 105557, Atlanta, GA 30348 — BlueCard / Out-of-State ITS Claims
Timely filing limit: 90 daysCompare all plans
Verified Aug 2026 · source
1 exception — check before you submit
Depends on your network status
210 days — non-participating providers and facilities in California
Prior authorization phone: (888) 831-2246
Provider website: https://providers.anthem.com/california-provider/home

Billing Anthem Blue Cross from outside California?

Usually you do not send the claim to Anthem Blue Cross. Under the BlueCard program, a provider treating a member from another Blue plan submits the claim to their own local Blue Cross Blue Shield plan, which then routes it to Anthem Blue Cross for processing.

The payer ID and claims address above are for filing within California. Filing from elsewhere, use your local plan's details instead.
Prior authorizationis generally handled by the member's home plan — so Anthem Blue Cross, wherever you are.
Your timely filing limit is set by your own contract with your local Blue plan, not by the figure above. 365 days is customary but contracts vary.
To check eligibility and benefits for an out-of-area Blue member, call 1-800-676-BLUE (1-800-676-2583).

Arrangements vary by contract, and self-funded (ASO) accounts can differ — confirm with your local Blue plan before filing. See the BlueCard Program Provider Manual for the full rules.

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.

Anthem Blue Cross

Billing reference

Billing Anthem Blue Cross from outside California?

About Anthem Blue Cross

All 1000 prefixes for Anthem Blue Cross