If someone must receive treatment for drug and alcohol addiction in Greenfield, CA. and is lucky enough to be covered through health insurance, most alcohol and drug rehab facilities accept payment in the form of health insurance and will cooperate with individuals to see which treatment programs are approved. A number of private health insurance entities in Greenfield, California cover outpatient and inpatient drug and alcohol treatment, although the time which is included can differ. Private health insurance most often covers the first 4 weeks of drug treatment, although there are individuals whose plan is more extensive and may cover a longer stay in a Greenfield, CA. drug and alcohol rehabilitation center. It is recommended that individuals their plan directly with the help of their treatment center to decide what services are approved by their private health insurance.