On December 22, 2025, CMS will implement an online form on cms.gov for providers that need to report a complaint about a Medicare Advantage plan. Upon submission, these complaints will be sent to the HPMS Complaints Tracking Module (CTM). The process will flow as described below:
- Providers will access the online complaint using the following steps:
- Go to https://www.cms.gov.
- Select “Medicare” from the top left dropdown menu.
- Select “Health & drug plans” from the left-hand navigation.
- Select “Report a provider complaint about an MA plan.”
The online form will capture basic information about the complainant, beneficiary, provider, and Medicare Advantage plan, a complaint summary, and optional fields for date(s) of service and claim number. Once a complaint has been submitted via a new online Provider Complaints form, it will be placed in a queue in the Health Plan Management System Complaints Tracking Module for review, triage and tracking.
