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Online tools

Availity Essentials

Access most member eligibility, benefits and claims information, review pre-authorization requirements and submit requests online, use the Onboarding Tracker to view contracting status and more.

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Favorite online tools

Self-Service Tool

Get the answers you need on demand, online, 24/7. Our provider self-service tool helps you get the most out of partnering with us. See helpful answers to our most frequently asked questions and quickly navigate our tools and website resources.

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Update your information

Update your information

Let us know immediately about changes to your practice and billing information. View our directory attestation requirements and learn how to validate your provider directory information.

Update your information.

Still need help? Contact us

Provider Contact Center

For information that cannot be served by Availity Essentials or our self-service tool, our Provider Contact Center is available Monday through Friday, 6 a.m. - 5 p.m. (PT). Call 1 (888) 349-6558. Interactive voice response (IVR) is available 24/7.

Dentists and dental professionals

View contact information at or email our dental provider relations team at

Contact us

Correspondence addresses

Asuris Northwest Health
PO Box 1106
Lewiston ID 83501

Asuris Northwest Health
Medicare Advantage
PO Box 1106
Lewiston ID 83501

Network termination or closing a practice

Refer to your provider agreement for instructions when submitting a network termination notice as language may vary. Always send network termination notices by certified mail or as indicated in your agreement. Include the following in your notice:

  • Your name
  • Confirmation email address
  • Practice name
  • Tax ID
  • NPI number
  • Reason for network termination

Send certified mail to:

Asuris Northwest Health
Attention: Network Management
1111 Lake Washington Blvd N., Suite #900
Renton, WA 98056

Dental providers: Notices for termination for dental providers should be sent to

Claims appeals, balance billing or pricing disputes

The process for submitting an appeal depends on your issue. Review our pricing disputes and appeals information to ensure you are following the correct process.

For balance billing information, view our Pricing disputes and appeals or call our Provider Contact Center at 1 (888) 349-6558.

Adverse determination provider appeals or disputes

Medical provider, hospital or facility

  • Submit appeals and any supporting documents using the Appeals application on Availity Essentials
  • Fax: 1 (866) 273-1820.

Large documents or documents sent by certified mail may be sent to:

Asuris Attention: Appeals
P.O. Box 1248
Lewiston, ID 83501-1248

Commercial dental providers

Dental Customer Service Appeals
P.O. Box 69437
Harrisburg, PA 17106-9437

MedAdvantage dental providers

Medicare Advantage/Medicare Part D
Appeals and Grievance B32AG
P.O. Box 1827
Medford, OR 97501

Provider contract termination appeals

Medical provider, hospital or facility

Provider Contract Termination Appeal
Attention: Credentialing Department: MS LD1N
P.O. BOX 1106
Lewiston, ID 83501-1106

Commercial dental providers

Provider Contract or Credentialing Termination Appeal
Attention: Provider Relations
P.O. Box 45132
Jacksonville, FL 32232-9902

Electronic transactions

Learn who to contact for electronic transaction issues such as:

  • Availity payer list
  • EFT hotline number
  • Request for raw data
  • Third party vendor support
  • EDI batch transactions support
  • Missing ERA835s or rejected medical or dental claims


  • Phone 1 (800) 282-4548
  • Create an eTicket or online chat in Availity Essentials: Help & Training>Availity Support>Contact Support

Ethics and compliance hotline

You can remain anonymous. Phone 1 (877) 878-2273.

Fraud or abuse

Medical policy

Submit your feedback on our medical policies by completing the secure online contact form.

Member claims submission

Members can use the Member reimbursement form to submit claims for medical, pharmacy, dental and vision services covered by Asuris. Members should only use this form if their health care provider is not submitting the claim.

Receiving secure emails from Asuris

Emails from us that contain personal health information are sent securely through Securemailbox Communications. Please view our secure email (Securemailbox) troubleshooting guide (PDF) to create an account in order to receive secure emails and, if needed, reset your password.

Respond to patient reviews

The Patient review feature gives our members the ability to provide feedback on their experiences with the health care system. You can respond to your patient's comments about their experience with you by completing and submitting the Provider Response Form (PDF).

TriWest and TRICARE


Update your information

We require that you verify the information about your practice and the networks you participate in at least every 30 days. View the instructions for verifying your information and notifying us of changes.

Medical management

Medical management programs

Radiology Quality Initiative/Carelon Medical Benefits Management (Carelon)

Obtain order numbers for diagnostic imaging procedures:

Physical medicine

Sleep medicine

Obtain an order number:

Pharmacy and pre-authorization


  • General inquiries: Phone 1 (800) 643-5918 or Fax: 1 (800) 884-4282
  • Medicare Part D: Fax: 1 (888) 335-3016
  • Prior Authorization: Fax: 1 (800) 884-4282


Contact information for pre-authorization varies by line of business and type of service or supply. Please refer to our pre-authorization lists for details.

Office closure

Office closure schedule

Our offices will be closed for the following holidays during 2024:

  • January 15 - Martin Luther King, Jr. Day
  • February 19 - President's Day
  • May 27 - Memorial Day
  • July 4 - Independence Day
  • September 2 - Labor Day
  • November 28 and 29 - Thanksgiving
  • December 24 and 25 - Christmas