Yes, you can switch between Medicare Advantage and Original Medicare, but timing matters. During the Annual Enrollment Period from October 15 through December 7, you can freely switch from Medicare Advantage to Original Medicare or vice versa. Additionally, the Medicare Advantage Open Enrollment Period from January 1 through March 31 allows you to switch from one Medicare Advantage plan to another or drop Medicare Advantage and return to Original Medicare. Special Enrollment Periods also provide switching opportunities when you experience qualifying life events like moving out of your plan’s service area, losing other coverage, or entering a nursing home. If you switch back to Original Medicare, you may want Medigap coverage, but insurers can use medical underwriting to deny coverage or charge higher premiums unless you qualify for guaranteed issue rights. When moving out of state with Original Medicare, no changes are needed, but Medicare Advantage and Part D plans typically require switching to plans available in your new area.