MedicaidAdministrativeMedium impact
Reminder: New Requirement for Provider Verification in Telephone Service Center
Medi-Cal·CA·Provider Bulletin
Effective date
Aug 1, 2026
We identified it
Aug 18, 2026
Summary
Effective August 1, 2026, the Telephone Service Center (TSC) implemented a new security verification protocol requiring all providers to confirm their most recent checkwrite amount when calling for support. This is a permanent security enhancement affecting all provider interactions with the TSC. Billing teams must ensure providers have checkwrite details available before contacting support at 1-800-541-5555.
Action Required
By August 1, 2026: Inform all providers in your practice of the new TSC verification requirement. Advise providers to have their most recent checkwrite amount available before calling the TSC at 1-800-541-5555 (Monday-Friday, 8 a.m. to 5 p.m.). Update internal staff communication and provider bulletins to document this change. Failure to provide checkwrite verification will prevent providers from accessing TSC support.