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Medicare Supplement Plans Massachusetts 2027

Reviewed by Russell Noga, Licensed Medicare Insurance Broker (all 50 states) | Last updated October 8, 2026

Massachusetts skips the standard Medigap plan letters. Instead it has a Core plan, a Supplement 1A plan, and, for those eligible for Medicare before 2020, a Supplement 1 plan. Most people just starting Medicare are choosing between Core and Supplement 1A.

Along with Minnesota and Wisconsin, Massachusetts is one of three states with a different approach to standardizing Medigap. Its plans follow the state’s own rules, so coverage, enrollment and pricing work somewhat differently than elsewhere in the country.

This guide covers every Massachusetts plan, how they stack up, what drives price and how to pick one. For national plans, see Medicare Supplement plans 2027.

✔ Licensed across all 50 states
✔ Built on CMS 2027 data
✔ No-cost plan comparison

Key Highlights

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In Massachusetts, the options are Core, Supplement 1A and, for those eligible before 2020, Supplement 1.

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For people new to Medicare, Supplement 1A is the most complete plan.

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In Massachusetts, benefits are standardized; insurers set different prices.

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Prescriptions are not covered by Medigap; add Part D.

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Massachusetts has its own enrollment rules; review them before applying.

Compare plans and enroll online

Massachusetts Medigap Plans Compared

Plan Who Can Buy Coverage Level May Fit If
Core Anyone with Medicare Basic gaps such as Part A and Part B coinsurance You want a lower premium and accept some costs
Supplement 1A Anyone with Medicare Wide coverage, including the Part A deductible and skilled nursing coinsurance; the Part B deductible is not covered You’re looking for the most complete plan offered to new enrollees
Supplement 1 Limited to people who qualified for Medicare before January 1, 2020 Like Supplement 1A plus the Part B deductible You became eligible before 2020 and want the most coverage

Massachusetts sets the exact benefits. Before buying, review the outline of coverage for each plan.

Core vs Supplement 1A

Core Plan

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Lower premium

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Covers basic Medicare coinsurance

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You pay more when you use care

Supplement 1A

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Higher premium

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Covers most gaps, including the Part A deductible

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Predictable costs; Part B deductible not covered

Supplement 1A usually makes sense if you see doctors often or want predictable costs. Core may suit you if you are healthy and want the lowest premium, but get prices on both before you decide.

Understanding Medicare Supplement Plans in Massachusetts for 2027

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How Massachusetts Medigap Differs

Apart from plan names, Massachusetts sets its own rules on when and how you may buy Medigap and how insurers may price it, and these can offer more protection than federal rules. Before applying, check current enrollment windows and rules with SHINE, the free Medicare counseling program in Massachusetts, or with a licensed agent.

Medigap vs Medicare Advantage in Massachusetts

Medicare Advantage Original Medicare + Medigap
Monthly premium Often low or $0 (2027 average $12, CMS) Higher; varies by plan letter, age and ZIP
Doctors Usually a network Any provider in the U.S. that accepts Medicare
Costs when you get care Copays and coinsurance up to a yearly maximum Low and predictable; on Plan G, little or nothing once the Part B deductible is met
Drug coverage Usually included Add a separate Part D plan
Dental, vision, hearing Many plans may include some coverage Not included
Changing later Every year during Annual Enrollment Health questions in most states once your Medigap Open Enrollment Period ends

For Massachusetts, read the Medigap column as Core or Supplement 1A instead of Plan G.

Part D Drug Coverage

$700

Maximum 2027 Part D deductible, up from $615.

$2,400

2027 Part D out-of-pocket cap, up from $2,100.

About $36

CMS average standalone Part D premium for 2027, an increase of under $1.

$7

Projected 2027 average for the drug portion of a Medicare Advantage premium, a decrease from $11.32.

Prescriptions are not covered by Massachusetts Medigap plans. Pair your plan with a standalone Part D plan, and see if you are eligible for Prescription Advantage, the state pharmacy assistance program in Massachusetts, which can help pay drug costs along with Part D.

Costs and pricing of Supplement Plans in Massachusetts

How Medigap Prices Are Set

Your Age

Many insurers charge more as you get older.

Your ZIP Code

Prices vary by state and area.

Tobacco Use

Tobacco users usually pay more.

Discounts

Household or other discounts, which vary by insurer and state.

Pricing Method How the Premium Is Set Over Time
Community-rated All people in an area pay one premium, whatever their age Does not go up as you age, but may go up for inflation and other reasons
Issue-age-rated Based on your age when you buy Does not go up as you age, but may go up for other reasons
Attained-age-rated Based on your current age Rises as you age, on top of other increases

Which method applies depends on the insurer and the state. Before buying, find out how a policy is priced, not only what it costs now.

What Original Medicare Leaves You to Pay

In Massachusetts, a Medigap plan is designed to fill the gaps left by Original Medicare:

Original Medicare Gap What It Means for You
Part A deductible Deductible charged per hospital benefit period; $1,736 in 2026
Part A hospital coinsurance Daily charges after day 60 of a hospital stay
Part B deductible A yearly deductible; $283 in 2026
Part B coinsurance Typically 20% of approved amounts, with no annual cap
Skilled nursing coinsurance Daily charges for days 21 through 100 of a covered stay

No limit unless you add a supplement: Original Medicare does not cap out-of-pocket costs. If you lack Medigap or other coverage, the 20% you may owe for Part B services has no ceiling.

Federal Guaranteed Issue Rights

Beyond Massachusetts’s own rules, federal law lets you buy Medigap without health questions in certain cases, generally within 63 days after other coverage ends:

You May Have a Right to Buy If

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Your Medicare Advantage plan exits your area or stops serving Medicare

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You enrolled in Medicare Advantage when you first became eligible at 65 and want to go back within the first year

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You left a Medigap policy to try Medicare Advantage for the first time and want to go back within a year

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Employer or union coverage that pays after Medicare stops

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Your Medigap insurer goes bankrupt or deceives you

Medicare Advantage in Massachusetts

Medicare Advantage, sometimes called Part C, lets you receive your Medicare benefits through a Medicare-approved private insurer. These plans cover everything Original Medicare Part A and Part B cover, with the exception of hospice care, which Original Medicare continues to pay for. Most also bundle Part D drug coverage, and many may tack on extras like routine dental, vision and hearing benefits.

The trade-off is that Medicare Advantage plans generally rely on doctor and hospital networks and may call for referrals or prior authorization for certain services. Each Medicare Advantage plan sets a yearly out-of-pocket maximum for covered medical care, something Original Medicare lacks. You still pay your Part B premium, along with the plan’s premium if there is one.

Feature HMO PPO
Out-of-network care Not covered except emergencies and urgent care Covered at a higher cost
Referrals for specialists Usually required Usually not required
Premiums Usually lower Usually higher
Out-of-pocket maximum In-network limit In-network limit plus a higher combined limit
Best for Lower costs, local care Flexibility, travel, keeping specific doctors

Advantages

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Often a low or $0 premium

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A yearly out-of-pocket maximum

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Drug coverage usually included

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Dental, vision and hearing benefits may be included in many plans

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One card and one plan

Tradeoffs

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Networks; except for emergencies, HMOs require in-network care

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Prior authorization and referrals are common

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Copays add up if you use a lot of care

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Plans and networks can change every year

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Moving to Medigap later may involve health questions

How Medigap Claims Work

Usually you won’t ever file a Medigap claim. Your doctor sends the bill to Medicare, Medicare pays its portion, and the claim passes automatically to your Medigap insurer, which then pays its portion. A Medicare Summary Notice and an explanation of benefits show you what each one paid.

Rate Increases and Switching Insurers Later

Once you buy Medigap, its benefits never change, but its premiums can. Insurers submit rate increases to state regulators, frequently once a year. Since the same plan letter has the same benefits everywhere, moving to a cheaper insurer can cut costs while your coverage stays the same.

The drawback is underwriting. Outside your Medigap Open Enrollment Period or a guaranteed issue situation, most states allow the new insurer to ask health questions and turn you down. Do not cancel your current policy until the new one has been approved and is in force.

Turning 65 in Massachusetts

When you turn 65 in 2027, you get a seven-month Initial Enrollment Period: the three months before your birthday month, the birthday month itself and the three months that follow. If you sign up in the first three months, coverage begins on the first day of your birthday month.

Turning 65 Checklist

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Enroll in Part A and Part B, unless you have qualifying employer coverage and decide to postpone Part B

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Choose between Medicare Advantage and Original Medicare plus Medigap

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Enroll in a drug plan, or a Medicare Advantage plan that includes drugs, to avoid a late Part D penalty

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If you go with Medigap, purchase during your six-month Medigap Open Enrollment Period

Help Paying Medicare Costs

When your income and savings are limited, two programs can greatly lower your Medicare costs:

Medicare Savings Programs

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Run by your state Medicaid office

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May cover your Part B premium, and in some cases deductibles and coinsurance

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Income and asset limits vary by state

Extra Help (Part D)

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Run by Social Security

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Lowers Part D premiums, deductibles and copays

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Those enrolled in a Medicare Savings Program qualify automatically

If you qualify for both Medicare and full Medicaid, you may also be able to join a Dual Special Needs Plan. See help for low-income Part D beneficiaries.

Medigap for Couples

Spouses each need their own Medigap policy. If their health needs differ, they can pick different plans, such as Core for one spouse and Supplement 1A for the other. Household discounts may be available from some insurers; ask about them when comparing.

Choosing Between Core and Supplement 1A

Step by Step

1

Think about how much care you use. Frequent specialist visits or an upcoming surgery lean toward Supplement 1A.

2

Get quotes on both plans from several insurers. Within Massachusetts the benefits match, but the prices differ.

3

Test a costly year. Factor a hospital stay into each plan’s costs and compare the results.

4

Plan for the long run. Switching to fuller coverage later can be tougher than starting there.

For peace of mind, most people new to Medicare who can afford it pick Supplement 1A. Core is mainly a fit for healthy people who want the lowest premium and could cover Medicare’s cost sharing in a rough year.

Free Help in Massachusetts

In Massachusetts, SHINE (Serving the Health Insurance Needs of Everyone) provides free, unbiased Medicare counseling.

Free Help Comparing Plans

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Available any time: Medicare Plan Finder on Medicare.gov

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1-800-MEDICARE (1-800-633-4227), reachable 24 hours a day on all seven days of the week

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Your State Health Insurance Assistance Program (SHIP), which provides free, unbiased counseling

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A licensed agent or insurance broker, who can compare plans across several insurers for free

Gather your Medicare card, a list of your drugs and doses, your doctors and your preferred pharmacies before you call. That way a long conversation becomes a quick one.

What Medigap Does Not Cover

Not Covered by Medigap

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Prescription drugs: add a standalone Part D plan

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Routine dental care, hearing aids, and eye exams for glasses

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Long-term custodial care, whether in a nursing home or at home

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Private-duty nursing

In 2027, a standalone Part D plan can have a deductible of no more than $700 and an out-of-pocket cap of $2,400. Buy it with Medigap to avoid a late enrollment penalty that lasts for life.

Your Medigap Open Enrollment Period in Detail

You get a six-month Medigap Open Enrollment Period beginning in the first month you are both 65 or older and enrolled in Part B. It occurs only once and can’t be restarted. During this period, insurers have to sell you any Medigap plan they offer in your state at the same price healthy people pay.

If you work past 65, keep employer coverage and postpone Part B, your Medigap Open Enrollment Period does not begin until you sign up for Part B. Signing up for Part B early when you do not need it starts the clock and can waste this protection.

Switching From Medicare Advantage to Medigap

Step by Step

1

See if you have a guaranteed issue right. One example is when your plan is ending or you are still in your first year of Medicare Advantage.

2

If you don’t, look up your state’s rules. A few states grant extra rights; most permit health questions.

3

Get your Medigap application in before leaving Medicare Advantage. Confirm your approval first.

4

Join a Part D plan. Medigap does not cover drugs.

5

Time your exit from Medicare Advantage correctly. Use Annual Enrollment or the window from January to March.

Medigap With Employer or Retiree Coverage

With coverage through a current employer, you may not need Medigap yet, and postponing Part B can save your Medigap Open Enrollment Period for later. Retiree coverage works differently: it can act like a supplement, so weigh it against Medigap before you give it up, since you may not be able to regain retiree coverage.

You generally have a guaranteed issue right to buy certain Medigap plans when employer or union coverage that pays after Medicare comes to an end.

Pre-Existing Condition Waiting Periods

When you purchase Medigap during your open enrollment period or under a guaranteed issue right, you generally cannot be turned down or charged extra because of health conditions. Even so, if you lacked creditable coverage beforehand, the insurer may apply a waiting period of up to six months before it pays for a pre-existing condition. Having had creditable coverage shortens or eliminates that wait.

The 30-Day Free Look Period

When you swap one Medigap policy for another, you generally have 30 days to decide if you want to keep the new one. During that period, pay both premiums, and hold off on canceling the old policy until you’re confident in the new one.

How to Read a Medigap Quote

Check Each Quote For

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Plan letter, so you compare like with like

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Monthly premium plus any first-year or enrollment discount

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Pricing method: community-rated, issue-age or attained-age

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Household or payment discounts applied

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Effective date and any application conditions

When a quote has an introductory discount, find out what the premium will be once it expires.

Common Medigap Mistakes

Avoid These

1

Letting your open enrollment period pass. After it ends, you may face health questions.

2

Picking on current price only. Pricing method and rate history count.

3

Forgetting Part D. The late penalty is permanent.

4

Switching from Medigap to Medicare Advantage with no way back planned. Returning could mean answering health questions.

5

Dropping a policy before the new one is approved. This could leave you with no coverage.

Medigap and Medicaid

With full Medicaid, you generally do not need Medigap, and insurers generally are not allowed to sell you a policy that duplicates Medicaid benefits. A Medicare Savings Program, if you qualify, may pay your Part B premium and sometimes deductibles and coinsurance; check whether a Medigap policy would still add value for you.

Massachusetts Medicare Advantage Changes

Massachusetts has 97 Medicare Advantage plans for 2027, down from 103, and Mass Advantage is leaving Worcester County. Members whose plans end generally have a guaranteed issue right to buy Massachusetts Medigap coverage.

Bottom Line

The Bottom Line

Massachusetts has its own Medigap plans: Core, Supplement 1A and Supplement 1, which is for people eligible before 2020. Compare prices for Core and Supplement 1A across insurers, review the enrollment rules in Massachusetts, and add a Part D plan.

Compare plans and enroll online

Frequently Asked Questions

➤ What Medigap plans are available in Massachusetts?

Massachusetts offers its own Medigap plans: Core, Supplement 1A and, for people eligible for Medicare before 2020, Supplement 1. These replace the national lettered plans, so compare insurers’ prices for the same Massachusetts plan type.

➤ What is Supplement 1A?

Supplement 1A is the most complete Medigap plan available to people new to Medicare in Massachusetts. It covers most of the gaps in Original Medicare but does not pay the Part B deductible, similar to how Plan G works in other states.

➤ Can I buy Plan G in Massachusetts?

No. Massachusetts does not sell lettered Medigap plans like Plan G and uses its own standardized plans instead. Supplement 1A is the closest equivalent, since it also leaves the Part B deductible for you to pay.

➤ Do Massachusetts Medigap plans cover drugs?

No. Massachusetts Medigap plans do not include outpatient prescription drug coverage, so you need a separate Part D plan alongside your Core or Supplement 1A policy. You can also check whether you qualify for Prescription Advantage, the state’s drug assistance program.

➤ Where can I get free Medicare help in Massachusetts?

SHINE offers free, unbiased Medicare counseling to Massachusetts residents. Counselors can help you compare Core, Supplement 1A and Part D plans and explain any help you may qualify for with costs. You can also get quotes from a licensed agent at no charge.

➤ When can I buy a Medigap plan in Massachusetts?

The best time is your six-month Medigap Open Enrollment Period, which starts the month you are 65 or older and enrolled in Part B. During that window insurers cannot use health questions to deny you or charge more. Check with SHINE about any additional Massachusetts enrollment rights.

➤ Can I have a Massachusetts Medigap plan with Medicare Advantage?

No. Medigap plans only work with Original Medicare and cannot be used with a Medicare Advantage plan. If you are in Medicare Advantage and want Medigap, you would need to return to Original Medicare and add a separate Part D plan.

Have Questions?

Speak with a licensed insurance agent

1-833-641-4938

TTY users 711

Mon-Fri: 8am-9pm ET

Find & Compare Plans Online

Speak with a licensed insurance agent

1-833-641-4938TTY 711

Mon-Fri: 8am-9pm ET

ZRN Health & Financial Services, LLC, a Texas limited liability company

( Medicare Expert )

Russell Noga is the CEO of ZRN Health & Financial Services, and head content editor of several Medicare insurance online publications. He has over 15 years of experience as a licensed Medicare insurance broker helping Medicare beneficiaries learn about Medicare, Medicare Advantage Plans, Medigap insurance, and Medicare Part D prescription drug plans.