If an individual requires treatment for drug addiction and dependence and is fortunate enough to be covered through health insurance, most drug rehab programs in Calexico, California accept payment in the form of health insurance and will cooperate with people to determine what is and is not covered. Many private health insurance entities cover outpatient and residential drug and alcohol treatment, although the time in rehab which is considered covered can vary. Private health insurance will more than likely cover the first 30 days of drug and alcohol rehab, but there are individuals whose insurance is more extensive and can extend to a more long-term stay in an alcohol and drug rehab program. It is best to consult with their insurance company directly and to ask for any help as needed from their treatment facility to establish what is covered by your private health insurance.