Can I change my Medicare Supplement plan whenever I want?

Not always. Outside of your Medigap Open Enrollment Period or a qualifying guaranteed issue situation, an insurance company may ask health questions, charge more, or decline your application based on your answers to those health questions. Do not cancel your current Supplement plan until you have been approved for and accepted new coverage.

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From the Blog:

Medicare Supplement (Medigap) Underwriting

You want to enroll in a new Medicare Supplement plan after being on a different Medicare plan for a few years.
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