Drug addiction and alcoholism can effect many older Americans and seniors, and this problem is projected to only worsen in the coming years. Seniors who are covered by Medicare, an insurance plan funded through the federal government for Americans in this age bracket, can use their benefits to receive vital treatment services for drug or alcohol addiction at a wide variety of substance abuse rehab centers around the country. Medicare covers both inpatient and outpatient treatment programs, and seniors who are in need of treatment can consult with their primary care physician to choose a treatment program covered by Medicare which would be suitable for them.