Can HealthCare.Gov Enroll someone in Medicaid?

A good friend in Louisiana went to renew ACA coverage and was told (by the site) he was put on Medicaid when he entered his income figures (which are low). He left it at that assuming he was now enrolled in Medicaid, but can it really be as simple as that? Should he now receive a MediCaid card or account number or some such? What should he do next? I am worried about this, and grateful for any help you can provide.