Drug and alcohol addiction impacts many mature U.S. residents and seniors, and this situation is going to only become worse in the coming years. senior citizens who are insured by the Medicare plan, an insurance program provided by the federal funding for individuals in this age range, may use their benefits to receive vital rehab treatment for drug or alcohol abuse at a number of alcohol and drug treatment programs throughout the Costa Mesa, CA. area. Medicare pays for both residential and outpatient alcohol and drug treatment centers, and senior citizens in Costa Mesa, California whom wish to take part in treatment can consult with their primary care doctor to choose a Costa Mesa, CA. drug treatment program covered by Medicare which would be appropriate for them.