If a man or woman is in need of assistance for drug and alcohol addiction in Washington, California and is fortunate enough to have health insurance, the majority of drug rehab facilities work with those who have health insurance and will cooperate with clients to determine what is and is not approved. A number of private health insurance entities in Washington, California cover the costs of outpatient and inpatient alcohol and drug treatment, although the time which is covered can differ. Private health insurance will more than likely cover the first month of alcohol and drug rehab, but there are people whose plan is more extensive and can cover a longer length of time in a Washington, California alcohol and drug treatment center. It is advisable that individuals seek advice of their plan directly with the help of their rehabilitation facility to establish what services are covered by their private health insurance.