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Provider Information

Medicaid ABA Applications

Providers must enroll as ABA providers with the Maryland Medical Assistance Program before they register with Optum Provider Connect.  Please note that all ABA providers must have a unique NPI # for ABA services prior to completing the Medicaid application. 

ePREP for Provider Medicaid Enrollment and Registration with Optum

The state of Maryland has implemented the electronic Provider Revalidation and Enrollment Portal (ePREP). This resource enables online provider enrollment, re-enrollment, revalidation, information updates, and demographic changes. For resources to assist you with ePREP, visit the Maryland Department of Health Provider Enrollment information page.

To create a user profile or log into and existing account for Maryland Medicaid’s ePREP portal, visit After enrollment at Maryland Medicaid, register with Optum using Provider Connect.


Clinical/Utilization Management