How to become a Medicaid provider in Mississippi
To bill Mississippi Medicaid, enroll through Medicaid Enterprise System Assistance (MESA) Provider Portal, run by Gainwell Technologies. The process has 4 steps, listed below with the documents the state asks for.
- Enrollment portal
- Medicaid Enterprise System Assistance (MESA) Provider Portal
- Steps
- 4
- Documents
- 5
- Plans listed
- 3
On this page
Mississippi Medicaid enrollment at a glance
To bill Mississippi Medicaid, enroll through Medicaid Enterprise System Assistance (MESA) Provider Portal, run by Gainwell Technologies. The process has 4 steps, listed below with the documents the state asks for.
- Program
- Mississippi Medicaid (Mississippi Division of Medicaid, DOM)
- Enrollment portal
- Medicaid Enterprise System Assistance (MESA) Provider Portal
- Fiscal agent
- Gainwell Technologies (DOM fiscal agent; sends recredentialing notices and does revalidation site visits)
- Application fee
- DOM charges institutional provider taxonomies on its list (e.g., home health, hospice, ASCs, ESRD, FQHCs, mental health centers, rehab facilities) $750 for 2026. The fee applies at initial enrollment, reactivation, revalidation or re-enrollment, ownership changes and new practice locations, and is paid by check to the Division of Medicaid (marked with the application tracking number) and mailed to Gainwell. Providers that already paid Medicare or another state are exempt. Federal rule (42 CFR 455.460): the state must collect the CMS application fee from institutional providers that are newly enrolling or re-enrolling; individual physicians and non-physician practitioners are exempt, as are providers already enrolled in (or that already paid the fee to) Medicare or another state's Medicaid/CHIP. CMS set the fee at $750 for calendar year 2026.
- Fingerprinting
- Revalidating providers may have to submit fingerprints as part of screening. Federal rule (42 CFR 455.434, 455.450(c)): providers the state places in the 'high' categorical risk level, and anyone owning 5% or more of such a provider, must submit fingerprints for a criminal background check.
- Site visit
- Revalidating providers may need a site visit, done by Medicaid's fiscal agent. Federal rule (42 CFR 455.432, 455.450(b)-(c)): the state must do site visits before and after enrollment for providers in the 'moderate' or 'high' risk levels, and any enrolled provider must allow unannounced on-site inspections.
- Revalidation
- DOM restarted revalidation on October 1, 2023, mailing notices to providers enrolled five years or more; revalidation is done in the MESA Provider Portal. DOM published a Medicaid Provider Revalidation Roadmap in August 2026. Federal rule (42 CFR 455.414): every enrolled provider must be revalidated at least once every 5 years.
- Provider manual
- Provider manual
Steps
- Register for access to the MESA Provider Portal ('Register Now')
- Complete the enrollment application, choosing to credential through DOM's CVO or a DOM-approved delegated credentialing entity if joining MississippiCAN/CHIP
- Pay the application fee by check (institutional taxonomies) and complete fingerprinting/site visit if required
- After DOM enrollment, credentialing and screening, contract with the coordinated care organization(s) of choice
Documents the state asks for
Joining managed-care plan networks
- Credentialing
- Yes — centralized. Under Senate Bill 2799 (2021), since October 1, 2022 MississippiCAN and CHIP providers are enrolled, credentialed and screened by DOM, and coordinated care organizations must accept that credentialing instead of credentialing providers themselves. DOM's credentialing verification organization credentials providers and re-credentials them at least every three years unless a DOM-approved delegated entity does it. Providers then sign contracts with each CCO they choose; a CCO may still credential separately for non-Medicaid lines of business. Centralized credentialing: yes.
- Plans (state list)
- Magnolia Health
- Molina Healthcare
- TrueCare
Frequently asked questions
How do I become a Medicaid provider in Mississippi?
To bill Mississippi Medicaid, enroll through Medicaid Enterprise System Assistance (MESA) Provider Portal, run by Gainwell Technologies. The process has 4 steps, listed below with the documents the state asks for.
Is there an application fee to enroll in Mississippi Medicaid?
DOM charges institutional provider taxonomies on its list (e.g., home health, hospice, ASCs, ESRD, FQHCs, mental health centers, rehab facilities) $750 for 2026. The fee applies at initial enrollment, reactivation, revalidation or re-enrollment, ownership changes and new practice locations, and is paid by check to the Division of Medicaid (marked with the application tracking number) and mailed to Gainwell. Providers that already paid Medicare or another state are exempt. Federal rule (42 CFR 455.460): the state must collect the CMS application fee from institutional providers that are newly enrolling or re-enrolling; individual physicians and non-physician practitioners are exempt, as are providers already enrolled in (or that already paid the fee to) Medicare or another state's Medicaid/CHIP. CMS set the fee at $750 for calendar year 2026.
How often must Mississippi Medicaid providers revalidate?
DOM restarted revalidation on October 1, 2023, mailing notices to providers enrolled five years or more; revalidation is done in the MESA Provider Portal. DOM published a Medicaid Provider Revalidation Roadmap in August 2026. Federal rule (42 CFR 455.414): every enrolled provider must be revalidated at least once every 5 years.