Why Do You Have To Enroll In Medicare? 
Technically , you do n't have to enroll in Medicare . It 's just very cost advantageous for healthcare expenses . Original Medicare -LRB- Parts A & B -RRB- pay for about 80 % of your healthcare expenses and you can have the other 20 % covered by adding a Medigap plan - a Part D plan can cover prescription costs -LRB- you would have cost-sharing for prescriptions -RRB- . If you 're not on group coverage through your employer -LRB- if you 're still working -RRB- and still have a traditional under 65 health plan , you will likely be spending a lot more on your health insurance compared to your Medicare coverage . Please feel free to contact me for further assistance . Thanks very much . 