Medicaid is a type of health insurance which is offered to people in certain low-income tax brackets. Eligibility for Medicaid is dependent on income and other factors such as whether or not the person has dependents and if they receive any other assistance. Medicaid may possibly even cover the costs associated with drug or alcohol rehabilitation, and there are many drug and alcohol rehab centers throughout the country which are covered through Medicaid. Most drug and alcohol rehab programs which are covered through Medicaid may only provide a limited treatment curriculum and may only supply such treatment on a short term basis, usually 30 days or less. People who have Medicaid should explore which programs cover the greatest amount of treatment for the most amount of time to reap the full benefits of a Medicaid rehab program.