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

Tips for Success

• Use our ProviderOne Guides and Resources for step-by-step instructions to enroll. 
• For additional tips, visit ProviderOne Frequently Asked Questions

Start a new Application

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

Resume an incomplete Application

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

• • Vocational provider and firm
  • Work rehabilitation provider
  • Master Level Therapist
  • PGAP® Activity Coach
  • Schools and Training Programs

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. 

Questions?

Email  LNIProviderOne@Lni.wa.gov

Accessing Your ProviderOne Domain

Effective 8/9/2024

Once your ProviderOne application is approved you will be issued a ProviderOne ID (Domain).  To access your domain to make updates and add additional providers you must establish a domain administrator. Follow the steps below to request administrator access. 

All Healthcare providers go to Health Care Authority's (HCA) Provider Contact Us web form

1. Select topic: "ProviderOne Access Request Form".
2. Complete all required fields.
3. If you do not have an NPI, enter 000000000 in the NPI field.
4. Submit the request.

Attention OneHealthPort (OHP) Users

Providers that established their administrator profile with One Health Port (OHP) will continue to access ProviderOne using OHP’s Single Sign On.  You must contact OHP directly for any access issues with your administrator profile. 

How do I unlock my account?

To unlock your ProviderOne account, go to the ProviderOne login page. Under the login button:

1. Click "To Unlock Account and Reset Password, Click here."
2. You will be required to correctly answer the password reset questions, listed below, before a temporary password will be sent to the email address in your user file.
   Security questions are:
• Secret Question (case sensitive)
• Date of Birth (mm/dd/yyyy)
• Last Name (case sensitive)
3. If you get an error message saying your security questions are incorrect, contact your organization’s system administrator for verification. If you are a system administrator, email the ProviderOne Security team.
4. If you are the sole system administrator of a domain, ProviderOne Security can assist with unlocking your account or resetting a password. If there are additional system administrators within your organization, you will be referred to them for assistance. 

For more information regarding access, visit Washington State Health Care Authority.

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:
   • Independent medical examiner
   • Interpreter
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: 

• • New enrollment
  • Changes in EFT payments
  • Legal name changes

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.

In August of 2025, L&I began issuing payments to providers via a P1V id issued and maintained through ProviderOne. Prior to this change, providers were issued L&I payments by the Office of Financial Management using a Statewide Vendor number (SWV). L&I will no longer be issuing payments using the Statewide Vendor Number for providers enrolled in ProviderOne.

If you were receiving payments via EFT from L&I, and did not update your EFT information in ProviderOne, you will receive your payment in the mail. If you would like to continue EFT payments, follow the below instruction to add your EFT details into ProviderOne.

Who doesn't need to take action?

Servicing-Only Providers (those who bill through a group), and ProviderOne Exempt providers (such as Interpreters, Health Services Coordinators, and Delegated groups) are not issued P1V numbers and further action is not needed.

How to update your payment information in ProviderOne

For providers who haven’t logged into ProviderOne yet:

1. Complete the ProviderOne Access Request Form to designate your group’s system administrator.
2. Log into ProviderOne and select “Manage Provider Information” from the Online Services tool bar. This opens the Business Process Wizard (BPW), where you maintain your provider information.
3. Complete all required steps listed in the BPW.  You will not be update your EFT preferences until all required steps are completed.
4. Click “Payment and Remittance details” step to update your EFT preference and banking details.

For providers already using ProviderOne:

1. Log in to ProviderOne using the EXT File Maintenance profile.
2. Go to “Payment and Remittance Details” step in the BPW and update your EFT preferences by April 30, 2025 to avoid potential payment delays.
3. Click into the “Final Step” and click the “Submit Provider Modification”.
4. Payments will continue by paper check until you update the EFT details.

Verifying EFT was successful

Updates made to the payment details in ProviderOne will be approved automatically. A verification of your banking information will occur; this process can take up to 1-2 weeks to complete.

• If your banking information was verified, the EFT test status in the payment details step (Financial Institution section) will indicate "Successful". 
• If your banking information was not verified, the payment details step will indicate a "Failed" response. Recheck your banking information to verify its accuracy, if incorrect, update and resubmit. If it is correct, please contact L&I Provider Accounts and Credentialing at LNIProviderOne@Lni.wa.gov. Please include your ProviderOne ID in your message.

Need help?

L&I has online resources available to guide you through updating ProviderOne. Visit ProviderOne Guides and Resources and choose the guide that applies to you (Individual billing or Group/FAOI).

Note: L&I doesn’t use ProviderOne to set up Electronic Data Interchange (EDI). To enroll in EDI, please visit Provider Express Billing

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.  

Resources

• Step-by-Step Instructions: https://nppes.cms.hhs.gov/assets/How_to_apply_for_an_NPI_online.pdf
• NPI - What You Need To Know.pdf