Provides information about Medicare Advantage plans (Part C) and Prescription Drug Plans (Part D) available to people receiving Original Medicare who are interested in obtaining additional coverage through the private health insurance market. Medicare Open Enrollment Period lasts Oct. 15 - Dec. 17 annually.   Many Part C and Part D plans are available with varying monthly premiums and deductibles.   Monthly premiums and deductibles vary each year.   Different plans cover varying medications with differing costs. Those who have drug coverage through an employer, union or any other source should check with their current plan to see if their coverage is considered as good or better than Part D benefits.   Assistance with choice of plan: -  Callers can also obtain this information by calling Medicare.   -  Medicare staff are not permitted to advise callers which plan to choose.