Medical Expense✓ Verified · outline & fact-checked · Sep 2026Difficulty 1/5
The Medicare Part B General Enrollment Period runs each year:
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Answer & full 3-part explanation (select an option above, or peek)
Why A is correct
The Medicare Part B General Enrollment Period (GEP) runs from January 1 through March 31 each year. It exists for people who missed their Initial Enrollment Period and did not qualify for a Special Enrollment Period. Coverage generally begins on July 1 following enrollment during the GEP. Because the enrollee enrolled late and outside a protected period, a late enrollment penalty may apply in addition to the regular premium.
Why the other options are wrong
- B) October 15 through December 7 is the Medicare Part D Annual Enrollment Period, not the Part B General Enrollment Period.
- C) July 1 through September 30 is not a Medicare enrollment window for Part B.
- D) April 1 through June 30 is not a Part B enrollment period under Medicare rules.
Memory hook
GEP = the first three months of the year: Jan 1 - Mar 31. Late enrollees get in, but July 1 is when coverage starts.