Within what time frame must Medicare supplement open enrollment occur after enrolling in Medicare Part B for those aged 65 or older?

The correct timeframe for Medicare supplement open enrollment after enrolling in Medicare Part B for individuals aged 65 or older is six months. This six-month period begins the month that a person turns 65 and is enrolled in Medicare Part B. During this open enrollment period, individuals have guaranteed issue rights, meaning the insurance company cannot deny coverage or charge higher premiums based on pre-existing conditions.

This six-month window is critical for seniors as it provides them with the best opportunity to secure supplemental insurance coverage without facing medical underwriting hurdles. After this open enrollment period, obtaining Medicare supplement coverage may involve stricter health questions and potential coverage denial or increased premiums based on health status.