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MESA Portal for Providers

MESA Portal for Providers

The Mississippi Division of Medicaid’s transition to a new Fiscal Agent, effective Oct. 3, 2022, includes a new Medicaid Management Information System (MMIS) and provider portal known as MESA: Medicaid Enterprise System Assistance. The goal of MESA is to enhance connections between health services systems and improve access to health information for Medicaid providers and the members they serve.

Access to the new MESA web portal is required for submitting, adjusting, and correcting claims; to access, save, or print your Remittance Advice (RA); submitting and amending prior authorization (PA) and requests; and verifying member enrollment.

The information and links on this page are designed to help providers register in the new portal and begin using it efficiently.

Click the Provider Login button below to go to the MESA login screen, and follow the MESA Tips below to navigate the portal.

 

 

MESA Tips (Newly Added)

MESA Tip: Provider Enrollment Application Needing Signatures of An Authorized Person

MESA Tip: Dental Claims Submission

MESA Tip: Long Term Care Claims Submission

MESA Tip: Home Health Claims Submission

MESA Tip: Pharmacy Claims Submission

MESA Tip: Provider Enrollment Panels

 

MESA Tips

MESA Tip: TPL Claims Submission

MESA Tip: Treatment History Navigation and Search

MESA Tip: Professional Claim Submission

MESA Tip: TPID Linking to Outside Service

MESA Tip: TPID Linking to Self Service

MESA Tip: Delegate Accounts (Updated)

MESA Tip: Eligibility, Retro Eligibility and Benefit Usage Verification

MESA Tip: Professional Crossover Claim Submission

MESA Tip: Inpatient Crossover Claim Submission

MESA Tip: Outpatient Crossover Claim Submission

MESA Tip: Create A Newborn Enrollment in Provider Portal

MESA Tip: AVRS Quick Reference for Providers

MESA Tip: Delegate Accounts

MESA Tip: Eligibility Verification

MESA Tip: PA Letter – Provider Portal Pharmacy Reports

MESA Tip: Universal PA Form Rules, Part 1

MESA Tip: Universal PA Form Rules, Part 2

MESA Tip: Trading Partner Enrollment

MESA Tip: DUR Override Codes Panel

MESA Tip: Recredentialing/Revalidation Application Sections B1,B2 or E Updates

 

MESA Provider Portal FAQs

Additional MESA Portal Resources

Key Contacts

Contact/Office Telephone Number
Provider/Beneficiary Services 1-800-884-3222
Provider Services Fax Number 1-866-644-6148
Member Services Fax Number 1-866-644-6050
Automated Voice Response System (AVRS) 1-800-884-3222
Electronic Data Interchange (EDI) 1-800-884-3222
Pharmacy Call Center 1-833-660-2402
Pharmacy Services Fax Center 1-866-644-6147

 

CHIP Providers

  • All Mississippi providers enrolling as Medicaid providers and/or CHIP providers must enroll in the new MESA system.
  • All providers enrolling as MississippiCAN and CHIP providers will be credentialed through the MESA system.
  • All providers enrolling as MississippiCAN and CHIP providers must contact each Coordinated Care Organization (CCO) to contract with and enter their provider network.

Additional Provider Resources