region/plan-specific news : California

California handbook supplement now online for 2026

The California provider handbook supplement and related appendices are now online on Magellan’s* provider website.

Contracted providers must follow the policies and procedures outlined in handbook supplements, as well as those in the Magellan National Provider Handbook.

You can find the updated California supplement under State-Specific Information by choosing State-, Plan- and EAP-Specific Information under our News & Publications menu item, or at MagellanProvider.com/California.

Contact information in California

For current contact information related to authorizations, claims and appeals for health plans that Magellan manages in California, see our helpful quick reference guide (PDF).

*In California, Magellan does business as Human Affairs International of California and/or Magellan Health Services of California, Inc. – Employer Services.