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 even cover the costs associated with drug or alcohol rehabilitation, and there are a lot of drug rehab centers throughout the country which are covered through Medicaid. Most drug and alcohol treatment 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. Individuals who have Medicaid should look for which programs cover the greatest amount of treatment for the most amount of time to reap the full benefits of a Medicaid rehab program.