If an individual requires treatment for drug and alcohol addiction in Davis, CA. and is lucky enough to have health insurance, a great number of drug rehab programs work with those who have health insurance and will cooperate with men and women to discover what is and is not approved. A number of private health insurance companies in Davis, California cover the costs of outpatient and inpatient drug treatment, but the timeframe which is included can vary. Private health insurance most often covers the first month of drug treatment, although there are people whose plan is more extensive and can cover a more long-term length of time in a Davis, CA. alcohol and drug treatment center. It is best to seek advice of their plan directly with the help of their rehab program to determine what is and what is not approved by their private health insurance.