Most rehabs recommend, and most people follow, that anyone entering rehab goes to one that is a significant distance away from where they live, either in another state or in another country.
The logic behind this is that rehab is something of a bubble for a period of time, and it is better for the client / patient to be in this bubble away from their normal environment, home, family, work etc.
As a rehab is a clinical facility, and should oversee any medical detox and therapeutic work that needs doing, it is crucially important that you check the local accreditation and licensing requirements for where the rehab is located, and make sure the rehab fully complies.
This is a state by state list in the US where these requirements can be checked
Columbia ( District)