Original Medicare path
Original Medicare includes Part A and Part B. A person may consider separate Part D prescription coverage and may be eligible for Medicare Supplement insurance.
A practical Missouri timeline
Turning 65 in Missouri: Medicare Preparation Guide
Start early enough to understand your timing, coordinate current coverage, and learn how the major Medicare paths fit before a deadline is close.
Begin with the official calendar
For many people, the Initial Enrollment Period lasts seven months
The usual Initial Enrollment Period begins three months before the month a person turns 65, includes the birthday month, and ends three months after. Coverage start dates can depend on when enrollment occurs and individual circumstances.
Prepare in stages
A practical path before age 65
1
Four to six months before
Review current health and prescription coverage. Ask the employer or plan administrator how coverage coordinates with Medicare and whether the drug coverage is considered creditable.
2
About three months before
Confirm whether automatic enrollment applies or whether an application through Social Security is needed. Learn when Part A and Part B would begin.
3
Before selecting a coverage path
Compare the roles of Original Medicare, Medicare Advantage, Part D, and Medigap. Review providers, prescriptions, pharmacies, costs, travel, and service preferences.
Working past 65
Employer coverage can change the timing decision
Do not assume you should enroll in or delay every part of Medicare simply because you are still working. The employer’s size, whether coverage is based on current employment, dependent status, drug coverage, COBRA, retiree coverage, and Health Savings Account contributions can matter.
Ask the employer or plan administrator for written information and use Social Security and Medicare guidance. Tax questions involving an HSA should be directed to an appropriate tax professional.
Understand the decision map
Original Medicare and Medicare Advantage are two different paths
Medicare Advantage path
Medicare Advantage is another way to receive Medicare-covered services through a private plan. Current plan provider access rules, rules, costs, coverage, and service areas require review.
Prepare for a private conversation
Information to organize without putting it in a public form
- Your Medicare eligibility and expected retirement timeline
- Current employer, retiree, COBRA, military, or other health coverage
- Providers and health-care facilities you expect to use
- Current prescriptions and preferred pharmacies
- Travel or multi-state care needs
- Coverage priorities and budget questions
Keep Medicare numbers, Social Security numbers, medical history, prescription lists, provider lists, banking information, and account credentials out of public forms and ordinary email. Southern Shield can explain how to prepare for an appropriate private review.
Official sources
Confirm enrollment timing and current rules
Medicare.govWhen to sign up for MedicareSocial Security AdministrationMedicare enrollment stepsMedicare.govWorking past 65Medicare.govMedigap enrollment information
Official sources reviewed July 21, 2026. Reverify current eligibility, enrollment, coordination, and coverage-start rules before publication and for every individual timeline.
Continue preparing for Medicare
Use the broader resource guide and Medigap questions to organize your next steps.
Contact and enrollment notice: Contacting Southern Shield does not enroll you in a Medicare plan, create coverage, or establish a Scope of Appointment. Additional required steps may apply before specific plan discussions. Do not send Medicare numbers, medical information, prescription details, financial information, or account information through public forms or ordinary email.
“We do not offer every plan available in your area. Any information provided is limited to those plans we do offer in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options.”