Updated: May 17, 2024

Welcome to L&I

To bill for services, all providers must apply for an L&I provider account number through ProviderOne.  All healthcare providers must have a National Provider Identifier (NPI) to apply.  If you need to obtain an NPI, see the "NPI requirement" tab below.

For the following provider types use the "Exempt Provider Application" tab below:

  • Interpreters
  • Independent medical examiners
  • On the job training (OJT)
  • Veterans Affairs (VA) facilities
  • Third party pharmacies
  • Clearinghouses
  • Health Service Coordinators
  • Out of country providers, apply here

Action Required

L&I needs all Groups to ensure their servicing providers are added/associated with their ProviderOne Group domain. Failure to take action may impact payment of services. To learn more, visit the "ProviderOne Action Required" tab below.​

Due to system issues, it may take up to four months for L&I’s provider credentialing team to process new provider applications and changes to existing accounts. We’re working on fixing this issue and we appreciate your patience.

Apply with ProviderOne

ProviderOne is an online portal where you can submit an application to enroll with multiple state agencies.

Tips for Success

Start a new Application

All providers new to L&I and ProviderOne must apply for an L&I account through ProviderOne

Note: To resume/complete an incomplete application, click here. You'll need your application ID and SSN/FEIN. 

Forms required when submitting your application:  

Before submitting your application, please be sure all forms are uploaded. Incomplete applications cannot be processed and will delay payments.

If you practice in Washington State and are one of the following provider types, you are required to be in network​ to be paid for services beyond the initial visit.  And, if you are new to L&I, you must upload the following forms in ProviderOne when you apply. 
  • Physicians
  • Osteopathic Physicians
  • Naturopathic Physicians
  • Podiatric Physicians
  • Dentists
  • Physician Assistants
  • Chiropractors
  • Optometrists
  • Advanced Registered Nurse Practitioners​
  • Note: These documents are required on the initial enrollment. Once a provider is approved in network, the malpractice insurance is the only document that must be uploaded, when added to a new group. Billing providers are also required to submit a copy of their IRS Form W-9​. 
    All other provider types, including all out of state providers and facilities must upload the following: 
    Provider Agreement 

    Note: Billing providers are also required to submit a copy of their IRS Form W-9​.​

    If you are one of the following providers, click on the link below for additional instructions: 

      Returned Application?

      1. Return to ProviderOne.
      2. Correct missing or incomplete information. 
      3. Use the appropriate enrollment guide. See ProviderOne Guides and Resources.
      4. Resubmit your application for review. 


      Email  LNIProviderOne@Lni.wa.gov

      Access ProviderOne

      Accessing Your ProviderOne Account

      All Healthcare providers in Washington, Oregon, or Idaho, visit OneHealthPort (OHP) to access ProviderOne.

      • If you have a OneHealthPort account, your organization’s OHP administrator will connect ProviderOne to your account.
      • If you are not sure who the organization administrator is, contact OHP
      • If you don’t have an account, you’ll need to register using your Tax ID.

      Questions? Use OHP’s contact form, select single sign on account.

      Providers outside WA, OR, or ID and all non-healthcare providers 

      1. Go to Health Care Authority's (HCA) Provider Contact Us web form.
      2. Select topic: "ProviderOne Access Request Form".
      3. Complete all required fields.
        • If you do not have an NPI, enter 000000000 in the NPI field.
      4. Submit the request.
      Exempt Provider Application

      Exempt Provider Application 

      If you are exempt from ProviderOne, follow the instructions below to apply.   

      Here's how to apply:

      1. Complete a Provider Account Application (F248-011-000).
      2. If you are one of the following provider types, you have additional requirements. To fulfill those requirements, visit:
      3. Submit your completed L&I application and all supporting documents by email, fax or mail to: 
        • Email: PacMail@Lni.wa.gov
        • Fax: 360-902-4484
        • Mail:
          Provider Accounts and Credentialing
          P O Box 44261
          Olympia, WA 98504-4261
      4. Avoid payment delays! Go to ofm.wa.gov/payee and submit the Vendor/Payee Registration form directly to the Office of Financial Management (OFM) for: 

      OFM forms must be submitted at the same time as your Provider Account Application. 

      Note: Providers are responsible for directly submitting necessary forms to OFM. L&I can’t accept or forward OFM forms on behalf of the provider. 

      For questions regarding OFM forms or the registration process, call 360-407-8180 or email PayeeRegistration@ofm.wa.gov

      Next Steps

      Allow 60 - 90 days for application review. You will receive notification once your application has been processed. If you haven't heard from us after 90 days, please email PACMail@Lni.wa.gov.

      ProviderOne Action Required

      Action Needed:
      In order to ensure there are no billing issues with your group or servicing accounts, please complete the following steps.

      First, check to see if the Provider exists in ProviderOne:
      The easiest way to determine this is by clicking into Step 14 from your group domain, click “Add”, enter the individual providers NPI and start date, click “Confirm Provider”.

      • Proceed to Option 1 if you get an error message that states “this NPI doesn’t exist in ProviderOne”
      • Proceed to Option 2 if the system prompts you to add an agency.

      Option 1: To add individual servicing providers who do not exist in ProviderOne, follow these steps:

      1. Click to Apply for an L&I account through ProviderOne.
      2. Choose individual provider enrollment.
      3. Please use individual provider's Social Security Number (SSN) and National Provider Identification (NPI).
      4. For servicing type, you must select “servicing only”.
      5. Complete all required steps for this enrollment by using this guide.
      6. Only select the primary taxonomy for the individual. L&I only requires the primary taxonomy.
      7. Step 15 of the providers’ application is where you add the group NPI (type 2) to associate the provider to your group.
      8. Step 19, the final step, indicates all required documents you need to upload before you submit. Make sure all documents are complete and signed.
      9. Click "Submit Enrollment" to send to L&I for review.  

      Option 2: If the Individual Provider exists in ProviderOne, follow these steps:

      1. If the Provider is found, you will be prompted to add an agency.
      2. Follow the system prompts.
      3. Once you have completed the association, stay in Step 14 and filter by Status I%.
      4. Click on the providers name to complete the enrollment by using Step 14 of this guide.
      5. Review each required step and upload the required documents at the final step.
      6. Submit new application modification for L&I review.
      7. Repeat steps 1-6 for each additional provider. 
      8. Go back into the group and submit modification once you have completed your updates.
      NPI Requirement

      NPI Requirement

      All healthcare providers who are HIPAA-covered entities (individuals or organizations) must obtain a National Provider Identifier (NPI) before they can apply in ProviderOne. 

      If you do not obtain an NPI you cannot start an application in ProviderOne. Providers must have an active account to bill for services. 

      Apply today for an NPI number! 

      Visit the National Plan & Provider Enumeration System (NPPES) to apply for a new individual or organization NPI number: https://nppes.cms.hhs.gov/#/. See the step-by-step application instructions in the resources section below.