We are excited to announce that NMP education is now available through the Noridian Educational Experience (NEE) platform. NEE is our centralized location for all self-paced education, making it easier for users to access resources to stay informed and up to date. ... Read More

The Noridian Medicare Portal (NMP) was refreshed over the weekend of May 16–17, 2026. While no functionality or inquiry processes have changed, users may notice minor updates to the site’s appearance and overall user experience. NMP remains committed to providing timely and accurate information to our valued customers.

CMS has implemented several prior authorization programs in recent months, each with its own distinct requirements. To accommodate these variations, the Noridian Medicare Portal (NMP) was enhanced to offer a more streamlined, intuitive, and efficient submission process across all prior authorization programs.... Read More

Users registering for a new user account on the Noridian Medicare Portal (NMP) will now be required to complete an NPI/PTAN verification prior to starting the registration process. This verification is to ensure the NPI/PTAN being used to register is active in the Medicare Claims Processing System.... Read More

We’ve refreshed our account activity warning emails to make them clearer and easier to act on. The 20 day notice has been removed, and instead users will receive two friendly reminders—on days 25 and 29—before an account is disabled on day 30 if there’s no portal login. This approach provides clearer, more supportive guidance for users.

Users may now view the status of a submitted overpayment refund check and see what claim or claims the money is being applied to on the Noridian Medicare Portal (NMP). This inquiry is available under the Financials section of NMP. View the Refund Check Number Lookup section of the NMP Inquiry Guide to get started.  

As of March 5, 2026, this issue has been resolved. 

Users may receive error messages after submitting a Prior Authorization Requests (PAR) or a Self-Service Reopening (SSRO) Requests. Our IT staff is aware and is diligently researching further for a resolution. In the meantime, users are asked to review the following recommendations:... Read More

The Noridian Medicare Portal (NMP) has been enhanced to provide on-screen instructions and clarifying information when users are submitting Appeals. These instructions and clarifications are intended to help prevent rejections and duplicate appeals from being submitted. ... Read More

Facilities may now “Opt-In” to receive Coordination of Benefits Agreements (COBA) crossover rejection letters on the Noridian Medicare Portal (NMP). These letters will ensure your facility is aware of any rejections that may have occurred for a claim from Benefits Coordination. To get started receiving these letters on NMP, the Provider Administrator for your facility, can follow the steps found on the COBA Crossover Letters page of the Portal Guide. Once the facilities PTANs have been “Opted-In” the letters will be viewable under the Claim Status tab of NMP on the Crossover Rejection Letters tab. 

The Noridian Medicare Portal (NMP) now offers a self-service option for our Part B users to request claims that have been purged from the claims processing system to be reactivated and viewable in NMP. To begin using this new feature, view the Purged Claim Request section of the Inquiry Guide.... Read More

Prior Authorization will be required nationwide as a condition of payment for the following HCPCS codes beginning for dates of delivery on or after August 12, 2024:... Read More

August 20 Update: The June 20 remits are now available to be viewed on the Noridian Medicare Portal. 

July 30 Update: The June 20 remits are still unavailable. Noridian is working with CMS to restore these remits. The message will be updated when the issue has been resolved. ... Read More

The Noridian Medicare Portal (NMP) now provides Remittance Advice Remark Codes (RARC) and Reason Narratives to provide additional information on Medicare Part B unprocessable claim denials. The Remark Codes will be displayed on the Claim Status Line Details when a Claim Status Inquiry is performed. Users can then use the RARC codes to determine the reason for the denial and make the necessary adjustments to the claim.... Read More

Effective May 6, 2024, the Noridian Medicare Portal (NMP) is making changes to user passwords and login requirements. NMP passwords will be prompted to change every 365 days instead of every 60 days. The structure of your password will change as well. The new password requirements are as follows: 

• Must be between 12 and 50 characters.
• Must include at least 3 numbers. 
• Must have at least 3 symbol (non-letter or number) characters.
• Must have at least 3 lowercase letters.
• Must have at least 3 uppercase letters. 
• New password may not have been used previously.
• Cannot be one of the last 12 passwords used. 
<... Read More

Due to an issue with Noridian’s document repository storage, Noridian has updated the results for Appeals Status and Prior Authorization Status to show results going forward from January 1, 2022 to display. Any results prior to that date will be unavailable. Noridian is continuing to work on the archive storage issue internally and with our outside vendors. For any inquiries that you may need assistance on, please contact the Provider Contact Center if needed. 

The Noridian Medicare Portal (NMP) now allows Part A and B users to upload EDI compatible claim files to EDI Support Services for processing. This is available under the Claim Status function on the Batch Claims Submit tab. The EDI generated reports will also be viewable in NMP once the file has been processed. ... Read More

The Noridian Medicare Portal (NMP) has added a new feature for users to verify if a provider is enrolled in a demonstration program using the ACO Lookup inquiry. Accountable Care Organizations (ACO) are one of the many innovation models created by the Centers for Medicare and Medicaid Services (CMS). Participation in these programs is voluntary and allows providers and patients to work together to deliver faster and more efficient healthcare treatment and reimbursement. This new feature is available under the Provider Enrollment function on the ACO Lookup tab. ... Read More

Effective January 1, 2024, Noridian will be requiring that providers/suppliers use the Noridian Medicare Portal (NMP) for all written reopenings that are available through the Self-Service Reopening feature. ... Read More

Effective June 19, 2023, Provider Administrator’s (PA’s) can now reactivate or deactivate End User accounts on the Noridian Medicare Portal (NMP) without having to contact User Security. View the “Manage Users” page of the Portal Guide for more details and instructions. 

Beginning March 20, 2023, for claims with a date of service on or after April 6, 2023, on a voluntary basis, a request can be made to have eligible Power Mobility Device (PMD) accessories reviewed with a Prior Authorization (PA) for a PMD base. For additional information, see the Required Prior Authorization: Power Mobility Devices webpage for your jurisdiction.

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