Getting ready to enroll in a Medicare Advantage or Medicare Part D plan for 2019? You may have more plans to choose from, the premiums may be lower, and some Medicare Advantage plans are adding benefits. That's why this open enrollment period is a particularly good time to shop for coverage even if you've been happy with your current plan.

Open enrollment for Part D and Medicare Advantage runs from October 15 to December 7 for coverage starting January 1, 2019. Here are eight changes to be on the watch for this enrollment season.

More Medicare Advantage Plan Choices

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There will be approximately 600 new Medicare Advantage plans in the U.S. in 2019, according