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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 Portal Instructions for Providers

 

 

 

Claims Submission on the MESA Portal

Dental Claims Submission (Document and Video)

DUR Override Codes Panel (Document)

Home Health Claim Submission (Document)

Inpatient Claims Submission (Document)

Inpatient Institutional Claims Portal Submission (Video Part A)

Inpatient Institutional Claims Portal Submission (Video Part B)

Long Term Care Claim Submission (Document)

Outpatient Claims Portal Submission (Document)

Pharmacy Claims Portal Submission (Video)

Pharmacy Billing for Medication Therapy Management on a Professional Claim  (Document)

Professional Claim Portal Submission (Document and Video)

TPL Claims Submission (Document)

Coordinated Care Organizations

CCO Claims Search (Document)

CCO Member Eligibility Verification (Document)

Delegate Accounts (Document)

Managing Delegates (Document)

Crossover Claims on the MESA Portal

Inpatient Crossover Claim Submission (Document)

Outpatient Crossover Claim Submission (Document)

Professional Crossover Claim Submission (Document)

General

Add Program (Document)

Delegate Accounts (Document)

Provider Portal Overview (Video)

Provider Portal Process (Document and Video)

Financial

Remittance Advice Financial Transaction Page – Provider Portal (Document)

Member Eligibility

Create a Newborn Enrollment in the Provider Portal (Document)

Eligibility, Benefit Usage Verification and Retro Eligibility (Document)

Eligibility Resource (Document)

Member Coverage Descriptions (Document)

Submitting a Newborn Enrollment (Document)

Treatment History Navigation and Search (Document)

Verify Member Eligibility (Document and Video)

MS Automated Voice Response System (AVRS)

AVRS Quick Reference for Providers (Document)

Prior Authorization

Create Pharmacy Prior Authorizations (Video)

PA Letter – Provider Portal Pharmacy Reports (Document)

PA Letters (Document)

Prior Authorization Overview (Video)

Universal PA Form Rules, Part 1 (Document)

Universal PA Form Rules, Part 2 (Document)

Provider Enrollment

How to Save an Enrollment Application and Identify and Resolve Errors (Video and Document).

Provider Enrollment Panels (Document)

Provider Enrollment Application Needing Signature (Video and Document)

Provider Revalidation (Document)

Provider Recredentialing (Document)

Trading Partner

TPID Linking for Outside Service (Document)

TPID Linking for Self Service (Document)

Trading Partner Enrollment (Document and Video)

Trading Partner Portal Enrollment (Video)

 

 

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