How do I go about getting transferred to Medicaid in Missouri?

Q) My son & I are moving to Richmond, Missouri. My son has SSI and receives health care through Georgia Medicaid now. How do I go about getting him transferred to Medicaid in Missouri–Likewise for food stamps. Where do I get a list of psychiatrists and family practice physicians who accept Medicaid; preferably in or near Richmond.
Thank You for your response

A) You need to contact Richmond Missouri Medicaid and Food Stamp office and ask them what information they will need to get Medicaid in their state.

Here is the link for Missouri medical providers to search for a list of psychiatrists and family practice physicians.https://dssapp.dss.mo.gov/ProviderList/sprovider.asp