What must an applicant provide to check their Medicaid application status online?

To check their Medicaid application status online, an applicant must provide their case number. The case number is a unique identifier assigned to each applicant's file, allowing the system to retrieve and display specific information related to that individual's Medicaid application. This streamlined process ensures that applicants can quickly and efficiently access their status without needing to provide additional personal information or documents.

The other options, while relevant to different aspects of Medicaid eligibility, are not necessary for checking the status online. Proof of residency is important for demonstrating eligibility but is not required to access the status. A summary of health history and a list of dependents may be necessary during the application process, but they do not serve as means to retrieve application status on the online portal.