Drug addiction treatments are generally covered by national health insurance schemes in the United States. These schemes cover the treatments offered by only government rehab centers. To avail better services, a private rehab center can be a better option as they provide comprehensive care and most of them are working with religious groups.
In case you are looking out for a drug rehab center which focuses mainly on spiritual aspects of healing the drug abuse problems and its addiction, then search for a private clinic and don't depend on a government-funded clinic. In some cases, depending on the place and patient, even treatments in private centers get covered under the national health insurance scheme.