Medicare Supplement

Medigap Plans A–N: A South Kingstown Guide

South Kingstown, R.I. — If you're weighing Original Medicare and hearing about "Medigap" or "Medicare Supplement" plans, the letters can feel like alphabet soup. Plan A, Plan G, Plan N — what do they cover, and why do they all use letters? Here's a plain-English walk-through built for readers here in Washington County.

What Medigap actually does

Medigap is private insurance that works alongside Original Medicare (Part A and Part B). Original Medicare pays its share of covered hospital and doctor services, and then your Medigap policy pays some or all of what's left — things like coinsurance, copays, and in some cases deductibles.

A few important boundaries: Medigap only works with Original Medicare, not with Medicare Advantage. It doesn't cover most dental, vision, hearing, or long-term care. And, again, it doesn't include drug coverage.

Why the plans use letters

Under federal rules, Medigap plans sold in most states — including Rhode Island — are standardized. That means the government sets exactly what each lettered plan has to cover. A Plan G from one carrier covers the same core benefits as a Plan G from any other carrier. What can differ is the monthly premium and the customer service you get.

Currently, the plans available to new enrollees are A, B, D, G, K, L, M, and N. Plans C and F are still held by people who were eligible for Medicare before January 1, 2020, but they're no longer sold to people who became eligible on or after that date. Plans K and L are cost-sharing plans with an annual out-of-pocket limit.

How to think about picking a letter

Because the benefits inside each letter are fixed, choosing a Medigap plan really comes down to two questions:

1. How much cost-sharing do you want to handle yourself versus pay for through a higher premium? 2. Which insurance company do you want to buy that lettered plan from?

Plans with richer coverage (fewer out-of-pocket costs when you use care) generally have higher monthly premiums. Plans that leave you with more cost-sharing usually cost less each month. Neither approach is "right" — it depends on your budget, your health, and how predictable you want your bills to be.

Timing matters — a lot

The single most important date for Medigap is the start of your Medigap Open Enrollment Period. This is a one-time, six-month window that begins the month you're both 65 or older and enrolled in Part B. During that window, insurers in Rhode Island must sell you any Medigap policy they offer, at the best available rate, without asking about your health.

Outside that window, in most cases, insurers can use medical underwriting — meaning they can charge more or turn you down based on your health history. A few limited "guaranteed issue" rights exist later, but the open enrollment window is your cleanest shot.

Where South Kingstown fits in

South Kingstown is in Washington County. Medigap policies are sold by private insurers licensed in Rhode Island, and the lettered benefits are the same statewide. If you're comparing carriers, premium differences for the same lettered plan are normal — that's why it pays to shop before you sign.

If you also want prescription coverage, you'd pair your Medigap plan with a stand-alone Part D drug plan. For 2026, Part D has a $2,100 annual out-of-pocket cap on covered drugs, a maximum deductible of $615, and an optional Medicare Prescription Payment Plan that lets you spread drug costs across the year.

Getting unbiased help

Rhode Island's State Health Insurance Assistance Program (SHIP), known locally as SHIP-RI through the Office of Healthy Aging, offers free one-on-one counseling. Counselors don't sell plans, and they can walk you through the letters, your enrollment window, and how Medigap compares with Medicare Advantage.