MassHealth is migrating its Medicaid Management Information System (MMIS) base application and Provider Online Service Center (POSC) to an Amazon Web Services (AWS) data center between Friday 3/14/2025 through Monday morning 3/17/2025.
MassHealth has published All Provider Bulletin 401, Medicaid Management Information System and Provider Online Service Center Migration to Amazon Web Services, which outlines key cutover information. Please review the bulletin immediately at https://www.mass.gov/doc/all-provider-bulletin-401-medicaid-management-information-system-and-provider-online-service-center-migration-to-amazon-web-services-0/download.
Take note of some important technical changes that your organization should complete before the migration. Please communicate this information to key business staff and your technical teams:
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- Immediately following the migration MassHealth will redirect all MMIS POSC, and point-to-point transactions received from MassHealth Providers to AWS.
- Please update any bookmarked POSC URL in your systems, as the redirect will only be available for a limited period of time. Organizations should bookmark the following URL to access the POSC in the AWS environment: https://mmis-portal.ehs.state.ma.us/EHSProviderPortal.
- If your organization requires a modification to your network to facilitate access to MassHealth’s AWS, please use the following IP Addresses. There are 2 to support redundancy:
- 15.197.248.41
- 35.71.150.175
- Organizations that utilize MassHealth’s point-to-point connectivity method do not need to make any modifications to the existing bookmarked URL.
What Do You Need to Do: Please ensure the following:
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- Please plan your operational needs around this cutover timeframe as the MMIS POSC will be unavailable during the cutover weekend.
- Ensure that your internal staff and business partners are aware of the cutover and are planning around the cutover accordingly.
- Confer with your technical team to inform them of the migration. If your organization needs to make any network adjustments to facilitate access to AWS on or after the date the migration is complete, please begin to address this issue immediately.
- You do NOT need to make any adjustments to the way you exchange transactions with MassHealth as the functionality in the MMIS POSC is NOT changing.
- Continue to monitor MassHealth communications leading up to the cutover for important pre and post cutover information.
If you have questions regarding this AWS migration notification, please contact MassHealth:
LTSS providers, please contact the LTSS Provider Service Center at (844) 368-5184 or support@masshealthltss.com.
All other providers, please contact MassHealth at (800) 841-2900 or provider@masshealthquestions.com.