Turning 65 in Moore? Your Medicare dates, month by month

Turning 65 in Moore: what to do first

If you live in Moore and are getting close to 65, the calendar is the whole game. Here is how Medicare.gov describes your first sign-up window and when coverage starts, plus where a Medicare Supplement fits.

The window that matters most: Medigap Open Enrollment

Your Medicare Supplement (Medigap) Open Enrollment Period is a one-time, 6-month window. It starts the first month you are 65 or older and have Medicare Part B. During it, a company can't refuse to sell you any Medigap policy it offers in Oklahoma and can't charge you more because of pre-existing health problems. After it ends, you may not be able to buy a policy, or it may cost more.

Your 7-month Initial Enrollment Period

Your Initial Enrollment Period lasts 7 months: it starts 3 months before the month you turn 65 and ends 3 months after it. If you sign up for Part B before the month you turn 65, coverage starts the month you turn 65. If you sign up the month you turn 65 or later in the window, coverage starts the next month. If your birthday is on the 1st, Medicare counts your eligibility from the month before.

Next steps

1. Confirm your Part A and Part B start dates with Social Security or Medicare.gov.
2. Mark your 6-month Medigap window, which starts with Part B once you are 65.
3. Compare Medicare Supplement plan letters and add Part D drug coverage.
4. If a supplement premium doesn't fit your budget, we can also review Medicare Advantage plans I offer.

Nearby: Turning 65 in OKC · Age 64 checklist · Medicare at 65 in Oklahoma. Already have a supplement? Oklahoma's birthday rule may let you change plans each year.

Sources (checked Oct 30, 2026): Medicare.gov: Medigap Open Enrollment Period · Medicare.gov: When does Medicare coverage start?

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