aid: oscar-emr
url: https://raw.githubusercontent.com/api-evangelist/oscar-emr/refs/heads/main/apis.yml
name: OSCAR EMR
kind: company
description: >-
  OSCAR EMR is an open-source electronic medical record (EMR) system created by Dr. David
  Chan and McMaster University's Department of Family Medicine, and one of Canada's most
  widely deployed primary-care EMRs. The core software is distributed under the GPL v2+
  license (mirrored on GitHub as scoophealth/oscar and on Bitbucket), while the commercially
  supported OSCAR Pro distribution is delivered by the WELL EMR Group (a WELL Health company)
  to more than 2,000 clinics and 10,000 providers across Canada. OSCAR exposes a documented
  REST web-services API under the /ws/services path (scheduling, demographics, billing,
  prescriptions, documents, labs, ticklers, eForms and providers), secured with 3-legged
  OAuth 1.0a via /ws/oauth. Clinical data flows historically use HL7 v2 messaging, and OSCAR
  ships an internal HL7 FHIR integration used for Ontario public-health and immunization
  reporting (BORN, DHIR). Third-party integrations for OSCAR Pro are partner-gated through
  the apps.health marketplace. As self-hosted software there is no single public API host or
  hosted FHIR CapabilityStatement; the API surface is documented on the OSCAR EMR developer
  wiki and realized per clinic deployment.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Healthcare
- Canada
- EHR
- EMR
- Primary Care
- Open Source
- FHIR
- HL7
- Interoperability
- SMART on FHIR
- OAuth
created: '2026-07-24'
modified: '2026-07-24'
specificationVersion: '0.19'
apis:
- aid: oscar-emr:oscar-rest-web-services-api
  name: OSCAR REST Web Services API
  description: >-
    OSCAR's REST web-services layer, served under the /ws/services base path of a deployed
    OSCAR instance, covering most of the clinical record - scheduling/appointments,
    demographics, billing, prescriptions, documents, labs, ticklers, eForms and providers.
    Applications register as REST clients through the OSCAR Administration interface and
    authenticate provider users with 3-legged OAuth 1.0a (/ws/oauth/initiate,
    /ws/oauth/authorize, /ws/oauth/token). As self-hosted software the host and web context
    are deployment-specific (documented example: http://localhost:8080/oscar_15/ws/services),
    so no single public base URL exists. The API is documented on the OSCAR EMR developer
    wiki; runtime documentation is generated with RAML (RAML for JAX-RS) rather than
    OpenAPI/Swagger, and there is no downloadable static spec published.
  humanURL: https://oscaremr.atlassian.net/wiki/spaces/OS/pages/79855638/Connecting+to+OSCAR's+REST+API
  tags:
  - EHR
  - EMR
  - REST
  - Primary Care
  - Canada
  properties:
  - type: Documentation
    url: https://oscaremr.atlassian.net/wiki/spaces/OS/overview
  - type: APIReference
    url: https://oscaremr.atlassian.net/wiki/spaces/OS/pages/85396074/Documenting+the+REST+API
  - type: GettingStarted
    url: https://oscaremr.atlassian.net/wiki/spaces/OS/pages/79855638/Connecting+to+OSCAR's+REST+API
  - type: Authentication
    url: https://oscaremr.atlassian.net/wiki/spaces/OS/pages/79855638/Connecting+to+OSCAR's+REST+API
common:
- type: DomainSecurity
  url: security/oscar-emr-domain-security.yml
- type: Website
  url: https://oscar-emr.com/
- type: DeveloperPortal
  url: https://oscaremr.atlassian.net/wiki/spaces/OS/overview
- type: Documentation
  url: https://oscaremr.atlassian.net/wiki/spaces/OS/overview
- type: APIReference
  url: https://oscaremr.atlassian.net/wiki/spaces/OS/pages/85396074/Documenting+the+REST+API
- type: GettingStarted
  url: https://oscaremr.atlassian.net/wiki/spaces/OS/pages/79855638/Connecting+to+OSCAR's+REST+API
- type: GitHubOrganization
  url: https://github.com/scoophealth
- type: SourceCode
  url: https://bitbucket.org/oscaremr/oscar/src/stable/
- type: Marketplace
  url: https://apps.health/
- type: SignUp
  url: https://share.hsforms.com/1p6l4kFOyRh6_7RfxVHpYTQcgcz4
- type: Support
  url: mailto:help@oscarprodesk.ca
- type: Pricing
  url: https://get.oscarpro.ca/
- type: Authentication
  url: authentication/oscar-emr-authentication.yml
- type: Conformance
  url: conformance/oscar-emr-conformance.yml
- type: Conventions
  url: conventions/oscar-emr-conventions.yml
- type: Lifecycle
  url: lifecycle/oscar-emr-lifecycle.yml
- type: DomainSecurity
  url: security/oscar-emr-domain-security.yml
- type: LLMsTxt
  url: llms/oscar-emr-llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com