When is the Medicare Advantage Disenrollment Period? January 1 through March 31. What can you do during this time? You can leave your current Medicare Advantage plan and switch to Original Medicare (Parts A and B) If you switch to Original Medicare, you can also join a Medicare prescription drug plan. Coverage begins the first day of the month after your enrollment form is received. What can’t you do during this time? You can’t switch from Original Medicare to a Medicare Advantage plan, or switch from one Medicare Advantage to another. You can’t switch from one Medicare prescription drug plan to another. You can’t join, switch, or drop a MSA (Medical Savings Account) Plan If you decide to switch back to Original Medicare (Parts A and B), you are eligible to apply for a Medicare Supplement plan. For information on the products ManhattanLife offers, contact our Medicare Supplement Specialists by phone at (800) 369-3600 or by email at firstname.lastname@example.org. Our Specialists are always happy to discuss your individual circumstances and suggest a plan that can meet your needs. Visit our website at medigap.manhattanlife.com for more information, to chat live with an expert, or to receive your free quote on Medicare Supplement plans offered in your state.