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​​​​​​​​​​​​​​​​​​​​​Inter​operability Implementation

Guided by federal and state regulations, the Interoperability Project ensures the Department of Health Care Services (DHCS) compliance; with regulations; facilitating patient data access, payer data exchange, and provider directory updates. Interoperability enables seamless sharing of patient data among health systems, promoting care coordination and improving outcomes. DHCS is committed to the development of secure application programming interfaces (APIs) to grant Californians easy access to their health data and aims to empower individuals in managing their health and fostering a connected healthcare ecosyst​em for a healthier California.

Medi-Cal Fee-for-Service Prior Authorization Metrics Reporting

DHCS is required to annually report aggregated Medi-Cal and Children’s Health Insurance Program (CHIP) fee-for-service (FFS) prior authorization metrics to comply with the CMS Interoperability and Prior Authorization Final Rule (CMS-0057-F). Publicly reporting these metrics promotes transparency and accountability, helps Medi-Cal and CHIP FFS members understand prior authorization processes, and enables providers and stakeholders to evaluate payer performance and administrative efficiency. The reporting includes access to information for all Medi-Cal and CHIP FFS items and services (excluding drugs) that require prior authorization, as well as data on prior authorization requests for those items and services over the previous calendar year. 

Please contact the DHCS Interoperability team with any questions or comments on the prior authorization ​metrics reports at interoperability@dhcs.ca.gov​.

Third-Party Application Developers 

Third-party application developers interested in providing health data through the Patient Access API must register and become certified through DHCS.

Please email ​interop-api@dhcs.ca.gov​ to request registration.

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Guidance for Managed Care Plans
Guidance for Mental Health Plans
Guidance for Managed Care Plans & Behavioral Health Plans/Counties
State Guidance
Precursor Programs
Last modified date: 3/30/2026 10:34 AM