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How to Join the UnitedHealthcare network

Facility/Hospital-Based Providers, Group/Practice Providers and Individually-Contracted Clinicians

Step 1:
Learn about commercial and Medicare requirements for joining our network. Get credentialed through the Mississippi Division of Medicaid’s Medicaid Enterprise System Assistance (MESA) provider portal.

All MississippiCAN and CHIP providers must get credentialed through the Mississippi Division of Medicaid’s Medicaid Enterprise System Assistance (MESA) provider portal.

Step 2: 
Once we receive your state-approved credentialing application for commercial and/or Medicare participation, we’ll send you a contract – called your participation agreement. This usually happens within 10 business days.Request a participation agreement to join the UnitedHealthcare network. Once we receive your state-approved credentialing application, we’ll send you a contract – called your participation agreement. This usually happens within 10 business days.

All MississippiCAN and CHIP providers: If your Medicaid credentialing is complete with the Mississippi Division of Medicaid and you have an active MS Medicaid ID number, please submit your practice’s letter of intent or request for participation by contacting us through chat within the UnitedHealthcare Provider Portal.

You should receive a reference number (starts with PR) for your request within an hour. If you have not received a PR number within 24 business hours, please check your spam or junk folders before resubmitting. Please do not copy anyone on your participation request, as this can cause a submission error that prevents your letter from being received.

As part of your application, please include a statement that the practice is requesting a new medical group agreement, along with the specific medical group specialty, practice roster and copies of Form W-9. The average turnaround time for demographic loading is 30 days, with an additional 30–45 days for completion of the contract process. Please be aware that credentialing approval does not imply or guarantee participation with our health plans. Approved and signed physician contracts are required for participation.

Step 3:
Set up your online tools, paperless options and complete your training.

Behavioral Health Providers

Learn how to join the Behavioral Health Network, review Community Plan Behavioral Health information, or submit demographic changes at Community Plan Behavioral Health.

UnitedHealthcare Dental

Once your credentialing is complete with the Mississippi Division of Medicaid (Gainwell) and you have your welcome letter for your provider(s) and/or office(s); please follow the below steps to submit your request for participation with UnitedHealthcare Dental:

**This is applicable to any additional service locations added to provider(s).

  1. Please visit us online: www.uhcdental.com.  
  2. Once on the website, please click on “Join Our Network”.
  3. On the Join Our Network page, under “Get Started”, number 2 (Southeast region); click on “Contact us”.
  4. This should bring up your email, please make sure to fill this out in its entirety and include a copy of your Provider’s Gainwell Welcome Letter. Please make sure to identity that this is for MS Medicaid (MSCAN/MSCHIP). This will initiate the contracting process for Dental with UnitedHealthcare.

March Vision Care

Once your credentialing is complete with the Mississippi Division of Medicaid and you have an active MS Medicaid ID, please go to https://www.marchvisioncare.com/becomeprovider.aspx where you will complete the form by filling in the requested information. Once submitted, you will be contacted by a representative from our Network team. 

Optum Physical Health

1. Current Participating Optum Providers:

  • Send Letter of Interest by email to netdevpubsec@optum.com or fax to 1-855-277-9173
    Including the following:
    • Group Name or Provider Name
    • Tax ID Number
    • NPI Number
    • Place of Service Address
    • Phone Number
    • Fax Number
    • Email Address
  •  Within 1-3 business days a UHC Community Plan Application packet will be sent via Adobe Sign.  An email confirmation is sent stating that you should be receiving the application via Adobe Sign.
  • Processing time is typically 15 business days after receipt of all required documents and information.  You will receive a Welcome Letter via email once processed.
  • The effective date of your Community Plan participation will be 30 days out from when we receive your completed application and all required documents and information.
  • Send any questions to netdevpubsec@optum.com or call our MPS at 1-800-873-4575.

2. New Non-Participating Optum Providers:

For new providers/groups wanting to become part of the Optum Physical Health Network, please submit your request for participation on our website – www.myoptumhealthphysicalhealth.com and select “Interested in becoming a Provider” or by calling 1-800-873-4575.

Hospitals and Healthcare Facilities

Submit your request to join our network through UnitedHealthcare’s Onboard Pro self-service tool.

All MississippiCAN and CHIP providers must be credentialed through the Mississippi Division of Medicaid’s Medicaid Enterprise System Assistance (MESA) provider portal.