The four parts of Medicare, in plain English
Medicare is one program, but it is built from four “parts.” Knowing what each one does is the foundation for every decision that follows.
- Part A (hospital insurance) covers inpatient hospital stays, short-term skilled nursing after a qualifying hospital admission, hospice, and some home health care. Most people pay no premium for Part A because they paid Medicare taxes while working.
- Part B (medical insurance) covers doctor visits, outpatient care, preventive services, lab work, and durable medical equipment. Part B has a monthly premium.
- Part C (Medicare Advantage) is a private, all-in-one alternative that bundles Part A and Part B — and usually Part D — into a single plan, often with extra benefits. More on this below.
- Part D (prescription drug coverage) is drug coverage offered through private plans. You add it to Original Medicare as a stand-alone plan, or you get it built into most Medicare Advantage plans.
The core choice: Original Medicare + Medigap vs. Medicare Advantage
Almost everything about how to choose a Medicare plan comes down to one fork in the road. There is no universally right answer — the honest comparison is about trade-offs.
Path 1: Original Medicare + Medigap + a Part D plan
You keep the traditional government program (Parts A and B), then buy a Medigap (Medicare Supplement) policy to cover the deductibles and coinsurance Original Medicare leaves you owing, and add a stand-alone Part D drug plan.
- Pros: See almost any doctor or hospital nationwide that accepts Medicare — no networks and no referrals. Costs are predictable, and there are generally no prior-authorization hurdles for covered care. Great for people who travel or split time between states.
- Cons: You pay a monthly Medigap premium on top of your Part B premium, plus a separate Part D premium. Medigap does not include dental, vision, or hearing.
Path 2: Medicare Advantage (Part C)
A private plan replaces the way you receive your benefits, bundling hospital, medical, and usually drug coverage — frequently with extras like dental, vision, hearing, and a fitness benefit.
- Pros: Often a low or $0 monthly premium, an all-in-one plan with a yearly out-of-pocket maximum, and extra benefits Original Medicare does not include.
- Cons: You are limited to the plan’s provider network (HMO or PPO), you may need referrals, and many services require prior authorization. Benefits, networks, and drug lists can change every year, so what fits this year may not fit next year.
This is why Medicare Advantage vs. Medigap is a personal decision: if freedom to choose any doctor and predictable costs matter most, Path 1 often wins; if a low premium and bundled extras matter more and you are comfortable with a network, Path 2 may be the better fit.
Medicare enrollment periods and deadlines
Missing a Medicare deadline can cost you — some late-enrollment penalties last for life. Here are the enrollment periods that matter, stated as they stand for 2026.
- Initial Enrollment Period (when to sign up for Medicare): the 7-month window around your 65th birthday — the 3 months before your birthday month, that month, and the 3 months after.
- General Enrollment Period: January 1 – March 31, for people who missed their Initial Enrollment Period.
- Medicare Open Enrollment (Annual Enrollment Period): October 15 – December 7. This is the big one — switch between Original Medicare and Medicare Advantage, or change your Advantage or Part D plan. Changes take effect January 1.
- Medicare Advantage Open Enrollment: January 1 – March 31, for people already enrolled in a Medicare Advantage plan who want to switch Advantage plans or return to Original Medicare.
- Special Enrollment Periods: triggered by life events such as losing employer coverage or moving out of your plan’s service area.
Watch the penalties. Signing up late for Part B or Part D without other qualifying coverage can add a permanent surcharge to your premium, so do not let a deadline slide just because you feel healthy.
The Medigap timing rule most people miss
There is one deadline worth circling. Your best — and safest — time to buy a Medigap policy is your 6-month Medigap Open Enrollment Period, which starts the month you are 65 or older and enrolled in Part B. During this window you have a guaranteed issue right: insurers must sell you a policy at the best available rate regardless of your health history. Wait until later and, in most cases, you can be medically underwritten — charged more, or turned down, based on pre-existing conditions.
How to compare Medicare plans the right way
Once you know which path you are leaning toward, compare real plans instead of guessing.
- Use the official Medicare Plan Finder at Medicare.gov — it is free and shows the actual plans available at your Kansas City ZIP code.
- Enter your prescription drugs so you can see each plan’s formulary, copays, and total yearly drug cost — not just the premium.
- Confirm your doctors and hospitals are in-network before you enroll in a Medicare Advantage plan.
- Compare the out-of-pocket maximum and total expected cost, not the premium alone. A $0-premium plan is not free if your care and drugs cost more.
- Re-check every fall during Open Enrollment — plans change their networks, drug lists, and prices each year.
Free Medicare counseling in Kansas City (and why it beats the ads)
Here is the single best piece of Medicare help Kansas City families can use, and it costs nothing. Because the metro spans two states, each side has its own free, unbiased counseling program run for consumers, not for commissions:
- Kansas — SHICK (Senior Health Insurance Counseling for Kansas): free, one-on-one, unbiased Medicare counseling.
- Missouri — CLAIM: Missouri’s free counseling program, offering the same kind of neutral, no-cost help.
You can reach both through our free Medicare counseling (SHICK / CLAIM) listing. One honest warning: the TV commercials with celebrity spokespeople and the callers who offer to “review your Medicare benefits” are licensed salespeople paid on commission — not neutral advisers. SHICK and CLAIM counselors have nothing to sell, which is exactly why they are worth calling first.
What Medicare does not cover: long-term care
One of the costliest misunderstandings in senior care is assuming Medicare pays for a nursing home or ongoing help at home. It generally does not. Medicare can cover a short-term skilled or rehab stay after a hospital admission, but it does not pay for long-term custodial care — the day-to-day help with bathing, dressing, eating, and supervision that assisted living and nursing homes provide. That is a different program.
If long-term care is on your mind, read our guide to Medicare vs. Medicaid for long-term care and see what senior care costs in the Kansas City metro so you can plan ahead.
Common questions about Medicare
When should you sign up for Medicare?
For most people, the time to sign up for Medicare is your Initial Enrollment Period — the 7 months around your 65th birthday (the 3 months before your birthday month, your birthday month, and the 3 months after). If you are already getting Social Security, you are usually enrolled in Part A and Part B automatically. If you are still working past 65 with solid coverage from a current employer, you may be able to delay Part B without a penalty, but the rules are specific — confirm your situation with Medicare or a free SHICK/CLAIM counselor before you skip a deadline.
When is Medicare open enrollment in 2026?
Medicare Open Enrollment — also called the Annual Enrollment Period — runs October 15 through December 7 every year, including 2026. During this window you can switch between Original Medicare and Medicare Advantage, change Medicare Advantage or Part D drug plans, or join a drug plan. Changes you make take effect January 1 of the following year. There is also a separate Medicare Advantage Open Enrollment Period from January 1 to March 31 for people already in an Advantage plan.
How do you choose a Medicare plan?
Start with the core decision: Original Medicare (Parts A and B) with an optional Medigap policy and a stand-alone Part D drug plan, versus a single Medicare Advantage plan (Part C) that bundles it all. Then compare real plans on the Medicare Plan Finder at Medicare.gov — check that your specific doctors are in-network and that each of your prescription drugs is on the plan’s formulary. Weigh monthly premiums against out-of-pocket limits, and think about whether you travel or want to keep any doctor nationwide. Free, unbiased counseling through SHICK in Kansas or CLAIM in Missouri can walk you through it at no cost.
What is the difference between Medicare Advantage and Medigap?
They solve different problems and you generally do not use both together. Medigap (Medicare Supplement) works alongside Original Medicare to help pay the deductibles and coinsurance that Original Medicare leaves you owing; you keep any doctor who accepts Medicare and add a separate Part D drug plan. Medicare Advantage (Part C) replaces the way you get your benefits — a private plan bundles hospital, medical, and usually drug coverage, often with extras like dental, vision, hearing, or a gym benefit, but it uses provider networks and may require referrals and prior authorization. Advantage often has a lower or $0 premium; Medigap trades a higher premium for more predictable costs and freedom of choice.
Where can you get free Medicare help in Kansas City?
Kansas City families straddle two states, and each has its own free, unbiased Medicare counseling program. In Kansas it is SHICK (Senior Health Insurance Counseling for Kansas); in Missouri it is CLAIM. Both offer no-cost, one-on-one help comparing plans and are not trying to sell you anything. You can reach them through our resources page. Be cautious with TV ads and cold-callers offering to “review your Medicare” — those are licensed salespeople paid on commission, not neutral counselors.
General information for Kansas City families, not insurance advice. Medicare rules, plans, and dates change every year — confirm current details at Medicare.gov or with a licensed counselor before enrolling.