Medicare Supplement

How Medicare Supplement letters are standardized in Brockton

BROCKTON, Mass. — If you're new to Medicare, or helping a parent sort through their options, you've probably run into a wall of letters: Plan A, Plan G, Plan N, and more. These are Medicare Supplement plans — often called Medigap — and the letters aren't random. They're standardized categories set up so shoppers can actually compare apples to apples.

Making Sense of Medigap in Brockton

Here's a plain-language look at what Medigap does, how the letter system works, and what Brockton residents should know before they choose.

What Medigap Actually Does

Original Medicare (Part A and Part B) covers a big share of your hospital and doctor costs, but not all of it. There are deductibles, coinsurance amounts, and — importantly — no annual out-of-pocket limit on Original Medicare by itself.

A Medigap policy is private insurance you can buy to help pay some of those leftover costs. Depending on the plan letter, it may cover things like:

• The Part A hospital deductible and coinsurance
• Part B coinsurance (typically the 20% you'd otherwise owe)
• The first three pints of blood
• Hospice coinsurance
• Skilled nursing facility coinsurance
• Foreign travel emergency care (on some plans)

Medigap works only with Original Medicare. It does not work alongside a Medicare Advantage plan, and it does not include prescription drug coverage — you'd add a separate Part D plan for that.

Why the Letters Exist

Before standardization, Medigap plans were a mess to compare. Today, the federal government requires every Medigap plan sold under a given letter to cover the same core benefits, no matter which insurance company sells it.

That means Plan G from one carrier covers the same basic benefits as Plan G from another. The differences are usually price, customer service, and extras like discount programs — not the underlying coverage.

The currently sold letters are A, B, C, D, F, G, K, L, M, and N. Plans C and F are only available to people who became eligible for Medicare before January 1, 2020. Everyone newer to Medicare chooses from the remaining letters.

Massachusetts Is a Little Different

Here's something important for Brockton readers: Massachusetts is one of three states (along with Minnesota and Wisconsin) that standardizes Medigap plans its own way. Instead of the lettered plans used in most states, Massachusetts offers Core and Supplement 1 (and Supplement 1A for newer enrollees) plans, with a defined set of benefits.

Brockton is in Plymouth County, and the Medigap options available to you follow the Massachusetts framework — not the national letter grid you may see in general Medicare guides. If you've moved here from another state, or you're reading a national article about "Plan G," the specifics may not line up with what's sold locally.

For personalized help understanding Massachusetts's version, the state's SHINE program (Serving the Health Insurance Needs of Everyone) offers free counseling. It's Massachusetts's official State Health Insurance Assistance Program (SHIP).

How to Think About Choosing

Since the benefits within each standardized plan are set by rule, the shopping question becomes simpler:

1. How much upfront cost am I comfortable with? Some plans have lower monthly premiums but leave more out-of-pocket exposure. Others cost more each month but cover nearly everything. 2. Do I travel outside the U.S.? Some plans include foreign travel emergency benefits. 3. What's the carrier's pricing history? Medigap premiums can rise over time. Ask how the plan is "rated" — community-rated, issue-age-rated, or attained-age-rated — because that affects how your premium may change as you get older. 4. When am I enrolling? Your best window to buy a Medigap policy is your six-month Medigap Open Enrollment Period, which begins the month you turn 65 and are enrolled in Part B. During that window, insurers can't turn you down or charge you more due to health history. Outside that window, in most states, medical underwriting can apply — though Massachusetts has some of the more consumer-friendly rules in the country. Check with SHINE for specifics.

Medigap vs. Medicare Advantage — Not the Same Thing

This trips up a lot of people. Medicare Advantage (Part C) is an alternative way to get your Medicare benefits through a private plan. Medigap is a supplement that works alongside Original Medicare. You cannot have both at the same time.

If you're weighing the two paths, think about provider networks (Advantage plans usually have them; Original Medicare + Medigap generally lets you see any provider who accepts Medicare), predictability of costs, and whether you want drug coverage bundled or separate.

A Quick Word on 2026 Costs

While Medigap premiums are set by private insurers, other parts of Medicare have program-level figures worth knowing for 2026:

• Part D prescription drug plans now have a $2,100 annual out-of-pocket cap on covered drugs.
• The Part D maximum deductible is $615.
• The old "donut hole" coverage gap has been eliminated as of 2025 — Part D now has three phases.
• The Medicare Prescription Payment Plan lets you spread drug costs across the year in monthly installments if you choose.
• IRMAA surcharges on Part B and Part D premiums begin above $109,000 in income for single filers in 2026.