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New Medicaid Provider Portal to go-live Oct. 3, 2022

Providers can register in MESA Provider Portal, submit all claims types beginning on Monday

 The Mississippi Division of Medicaid’s (DOM) new Fiscal Agent (Gainwell Technologies) system, including a new provider portal known as MESA, will begin full operations on Oct. 3, 2022. Medicaid providers can find a link to the portal and resources to help them begin using the system at

Please note that while the MESA login screen is accessible, providers will not be able to register in the portal until Monday.

Information contained on the MESA Provider Portal webpage includes:

  • The link to the portal login and instructions on how to register
  • Training videos
  • Provider Quick Tips
  • Paper Claims Billing Manual
  • Interactive fee schedule
  • CHIP Provider Enrollment
  • Gainwell assistance phone numbers and fax numbers

Additionally, new provider enrollments will resume Oct. 3, 2022. The new provider enrollment process will be conducted online and will no longer accept paper enrollment applications.

As announced earlier this year, providers will no longer be required to credential with each coordinated care organization but will follow a centralized credentialing process through the MESA Provider Portal.

We appreciate your patience during this important implementation.

– Published Sept. 30, 2022