The standard premium for Medicare Part B increased by $5.00 in 2013, making it $104.90 per month, according to Medicare.gov. Medicare Part B premiums rose a total average of $8.50 per month over the five years prior to 2013.
In the early days of 2013, it was announced that the standard premium for Medicare Part B would increase by $9.00 per month in 2013. However, the real increase was less, notes Medicare.gov.
The Medicare part B deductible rose to $147 in 2013, a $7 increase over the premium amount in 2012, explains Medicare.gov. As per the rules, the premium is required to partially cover Medicare expenses. Therefore, the increase in premium is in keeping with projected cost increases.