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For Providers

Provider Login

If you are a contracted provider, you can register now. If you are a non-contracted provider, you will be able to register after you submit your first claim. Once you have created an account, you can use the provider portal to check eligibility, PA's, and claims for dates of service after 2016.

Login/Register

Community Resources

Finding help just got easier. Our T-REX Database connects members and caregivers in need with local programs and supports. Our database makes it easy for people with social needs – and those who help others – to find community programs. These programs provide help with food, shelter, healthcare, money and education, jobs and more.

Click the button below to check out these free tools and features.

Visit T-REX

Prior Authorization for Medicare or Oregon Health Plan

Check CPT codes for coverage and PA requirements.

Pre-Auth Check

ASAM training session registration

Register here for free training to treat Opioid Use Disorder (OUD)

Trillium is committed to simplifying the administration of health insurance so our providers can devote their attention to providing health care. 

We're always available if questions arise, and we collaborate with our providers to help ensure the efficient delivery of high-quality care throughout our community. 

Trillium contracts with physicians, facilities and other allied providers to ensure we have an adequate provider network which is essential for the delivery of health-care services to our members. All providers must be credentialed before they can be added to our network as a participating provider.

Medicare Provider Training

  • Model of Care Training **Required Annually**
  • Medicare Parts C and D General Compliance Training **Required Annually**
  • Medicare Parts C and D Fraud, Waste and Abuse Training **Required Annually**
    • If you are enrolled in Medicare Part A or B or a Medicare accredited supplier of DMEPOS you are exempt from this training.

Click for instructions on how to complete the Provider Training.