When is Medicare primary under a Group Insurance Plan?
Medicare is only secondary to your group coverage if you work
for a company with 20 or more employees (could be a combination of
part-time and full-time, based on total number of hours per year)
and you worked 20 weeks or more, in the current or preceding year.
They do not have to be consecutive weeks. If you work less than 20
weeks or your employer employs less than 20 employees, or both,
your medicare coverage is your primary insurance coverage.
Primary status of group benefits takes place as soon as the
employment and work week criteria are met. It will be primary for
at least the rest of the current calendar year and all of the
Primary status for medicare takes place on January 1st of the
following year after an employer employs less than 20 employees or
you work less than 20 weeks in that year. Medicare remains primary
until employment or work week criteria meet levels to make group