Medicare 2026

Two ways to build your Medicare coverage in Plymouth: how the pieces fit

PLYMOUTH, Mass. — If you are turning 65 soon or helping a parent sort through Medicare mail, you have probably noticed the choice comes down to two very different structures. One path keeps you in Original Medicare and lets you add a Medigap policy (and usually a stand-alone Part D drug plan). The other path bundles your coverage inside a Medicare Advantage plan run by a private insurer. Both are legal, both are common, and neither is "better" on paper — they are just built differently. Understanding the plumbing is the part that makes the rest of the decision easier.

Path one: Original Medicare, with Medigap and Part D added on

Original Medicare is the federal program itself — Part A (hospital) and Part B (doctor and outpatient). You can use it at any provider in the country that accepts Medicare, which is most of them. There is no network and no referral needed to see a specialist.

The trade-off is that Original Medicare, by itself, does not cap what you might pay out of pocket. That is where a Medigap policy (also called Medicare Supplement) comes in. Medigap is sold by private insurers, but the letter plans (Plan G, Plan N and so on) are standardized by law, so a Plan G at one company covers the same medical costs as a Plan G at another. What differs is the premium and the customer service.

Original Medicare does not include most prescription drug coverage, so people on this path usually add a stand-alone Part D drug plan. Per CMS, Part D has a $2,100 annual out-of-pocket cap and a $615 maximum deductible in 2026, moving to a $2,400 cap and a $700 maximum deductible in 2027. The old "donut hole" coverage gap was eliminated in 2025, leaving three simpler phases.

Path two: Medicare Advantage (Part C)

Medicare Advantage, or Part C, is an all-in-one alternative offered by private insurers under contract with Medicare. When you enroll in an Advantage plan, that plan — not Original Medicare — pays your claims, though you keep your Medicare rights.

Advantage plans usually bundle hospital, medical and drug coverage into one card and one monthly premium (which is on top of your Part B premium). They typically use networks — HMOs, PPOs and others — so where you go and whether you need a referral depend on the plan's rules. They also set an annual out-of-pocket maximum for medical care, which Original Medicare alone does not.

Plymouth is in Plymouth County, where availability of Medicare Advantage plans is set at the county level by CMS. You can look up the exact list for your ZIP code on medicare.gov's Plan Finder.

The structural differences that matter most

A few contrasts tend to drive the decision:

• Who pays the claim. Under Original Medicare, the federal program pays, and Medigap picks up much of what is left. Under Advantage, the private plan pays according to its own rules.
• Access to providers. Original Medicare is accepted almost anywhere in the U.S.; Advantage plans generally rely on networks.
• How drugs are covered. Original Medicare users add a stand-alone Part D plan; most Advantage plans include drug coverage.
• Predictability vs. bundling. Medigap plans tend to have higher premiums but fewer surprises at the point of care. Advantage plans often have lower premiums but more variable cost-sharing, up to the plan's out-of-pocket max.

The Medigap timing rule people miss

There is one important wrinkle if you think you might want the Original Medicare + Medigap path down the road. When you first enroll in Part B at 65, you get a six-month Medigap Open Enrollment window in which insurers must sell you a policy regardless of your health. Outside that window, and outside a few limited protected situations, Medigap insurers in most states can use medical underwriting.

Massachusetts has its own Medigap rules that are more consumer-friendly than the federal baseline, but the timing question still matters. If you start out in Medicare Advantage and later want to switch to Original Medicare with a Medigap, the ability to buy that Medigap may depend on your health at that time. This is worth thinking through before, not after.

When you can change your mind

Medicare gives you built-in chances to switch paths each year:

• Annual Enrollment Period (Oct. 15 – Dec. 7): You can join, drop or change a Medicare Advantage or Part D plan for the following year.
• Medicare Advantage Open Enrollment (Jan. 1 – March 31): If you are already in an Advantage plan, you can switch to a different Advantage plan or return to Original Medicare (and add a Part D plan).

One more figure worth knowing: IRMAA, the income-related surcharge on Part B and Part D, begins above $109,000 in income for a single filer in 2026. That surcharge follows you on either path.