Medicare Medicare guides

Read this before you decide

Short, plain-language pages on the Medicare choices Manuel helps with. None of them asks you for anything.

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The two things worth checking first

Your doctors and your prescriptions. They decide more than the premium does.

Turning 65

The window when the decisions get made, and what to have ready.

Open Turning 65

Dental and vision

Original Medicare doesn’t cover most dental care. Here is what to check.

Open Dental and vision

When to enroll

The enrollment year

The enrollment year A twelve-month chart of enrollment windows. Medicare Open Enrollment runs October 15 to December 7. HealthCare.gov Open Enrollment runs November 1 to January 15. The two overlap from November 1 to December 7. The Medicare Advantage Open Enrollment Period runs January 1 to March 31. both open, Nov 1 – Dec 7 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Medicare Open Enrollment Oct 15 – Dec 7 Marketplace enrollment Nov 1 – Jan 15 Medicare Advantage OEP Jan 1 – Mar 31 The enrollment year Sources: Medicare.gov and HealthCare.gov, checked September 2026 Marketplace special enrollment periods usually last 60 days after a qualifying life event. Going 63 days or more without creditable drug coverage can mean a Part D penalty. The enrollment year A twelve-month chart of enrollment windows. Medicare Open Enrollment runs October 15 to December 7. HealthCare.gov Open Enrollment runs November 1 to January 15. The two overlap from November 1 to December 7. The Medicare Advantage Open Enrollment Period runs January 1 to March 31. Shaded: both open, Nov 1 – Dec 7 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Medicare Open Enrollment Oct 15 – Dec 7 Marketplace enrollment Nov 1 – Jan 15 Medicare Advantage OEP Jan 1 – Mar 31 The enrollment year Sources: Medicare.gov, HealthCare.gov Marketplace special enrollment periods usually last 60 days. 63 days without creditable drug coverage can mean a Part D penalty.
Sources: Medicare.gov and HealthCare.gov enrollment periods, checked September 2026.

Next step

Still not sure?

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