Provincial Client Registry – FHIR

The provincial client registry Fast Healthcare Interoperability Resources (FHIR) specification is a next generation standards framework for exchanging health care information electronically. It leverages the latest web technology and can be used in a wide variety of contexts, including mobile devices, cloud communications, EHR-based data sharing, and server communications in large institutional health care providers.

This specification enables users to query Ontario’s provincial client registry. This means health care organizations can find all associated identifiers such as health card number(s) and hospital- issued medical record number(s) for a patient from different contributing sources as well as all matching records for a patient.

Learn about the other standards that work with the PCR – the pan-Canadian PCR using HL7 versions 2 and 3.


FHIR is an evolving trial-for-use standard, so additional changes to it by HL7 are expected. We will continue to monitor developments and assess whether or not there are impacts, and publish updates as they evolve.

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This publication has been exempted from translation under the French Language Services Act as per O. Reg. 671/92. This publication is technical in nature and is available in English only due to its limited targeted audience.

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  • April 18, 2017

    Provincial client registry FHIR specification was updated

  • March 22, 2017

    Now available for public access

  • February 21, 2017

    Provincial client registry FHIR specification was created

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