When does Mary’s Medicare supplement open enrollment period begin if she turns 65 on September 23, 2019?

The correct timeframe for Mary's Medicare supplement open enrollment period begins three months before she turns 65 and extends three months after she turns 65. Since Mary turns 65 on September 23, 2019, her open enrollment period would start in June 2019, last through September 2019, and continue through December 2019.

However, the specific focus here is on the aspect that the enrollment period can also be mentioned in context with her turning 65. The choice indicating September 2019 to February 2020 captures the fact that she qualifies to enroll in a Medicare supplement immediately upon turning 65, allowing her to take advantage of her options for at least those initial months following her birthday up until February 2020. This period is significant because it is often associated with guaranteed issue rights, which ensures that as a new Medicare beneficiary, Mary cannot be denied coverage or charged more based on her health status during this time.

Other timelines provided do not accurately represent the open enrollment window pertinent to her 65th birthday and the rules governing Medicare supplement policies.