To compare Medigap plans, match your likely costs and doctors to each plan’s benefits, rules, and total yearly price.
Medigap fills the gaps in Original Medicare. Picking the right lettered plan and company isn’t hard once you break the job into a few quick checks. This guide shows you how to compare Medigap plans step by step, what to weigh, and where to verify details with official sources.
Medigap Basics In Plain English
Medigap (Medicare Supplement Insurance) is private insurance that pairs with Part A and Part B. It helps with deductibles, coinsurance, and copays for covered care. You can use it with any provider that takes Medicare assignment. You can’t pair it with a Medicare Advantage plan, and it covers one person per policy. Benefits are standardized by letter in most states—so Plan G benefits are the same from every company; prices and service differ. Newer enrollees can’t buy Plan F or C.
Benefit Snapshot: What Each Letter Really Solves
Use this quick table to map common out-of-pocket items to the plans that tackle them well. It’s a high-level view to help you shortlist two or three letters before you get quotes.
| Medical Cost Or Rule | What It Means For You | Plans With Strong Help* |
|---|---|---|
| Part A Coinsurance & Hospital Days | Daily hospital bills after day 60 can add up fast. | A–N (all plans cover these well) |
| Part B Coinsurance (20%) | Typical outpatient bills leave you with 20%. | A–N (Plan N has small copays) |
| Part A Deductible | Per-benefit-period hospital deductible. | B, D, G, K (50%), L (75%), M (50%), N |
| Part B Deductible | Yearly outpatient deductible. | F, C only (not for new enrollees) |
| Part B Excess Charges | Extra 15% from non-participating providers. | G covers; N doesn’t |
| Skilled Nursing Facility Coinsurance | Daily copay after day 20 in rehab. | C, D, F, G, K (50%), L (75%), M, N |
| Foreign Travel Emergency | Emergencies outside the U.S. (limited). | C, D, F, G, M, N |
| Out-Of-Pocket Cap | Yearly ceiling to limit risk. | K and L only (unique caps) |
| Preventive Services | Medicare covers most; coinsurance left on some items. | A–N (via Part B coinsurance help) |
| Blood (First 3 Pints) | Hospitals bill for the first units each year. | A–N (standardized coverage) |
*Lettered benefits are set by federal rules in most states. Minnesota, Massachusetts, and Wisconsin standardize differently.
How To Compare Medigap Plans: Step-By-Step
This is a tight process you can finish in an afternoon. You’ll move from needs, to plan letters, to quotes, to fine print, and wrap with a confident pick.
Step 1: List Your Care Patterns
Scan the last two years of care. Count specialist visits, therapy sessions, routine imaging, and any recurring drugs (Medigap doesn’t cover drugs; that’s Part D, but frequent visits hint at higher Part B coinsurance). List your doctors and the clinics you refuse to give up. Note travel habits—snowbirds and frequent travelers love nationwide access.
Step 2: Pick Two Or Three Letters To Price
Use the snapshot above to narrow choices. Many people price Plan G (broad coverage), Plan N (lower premium with modest copays), and either K or L (lower premium with a safety cap). If you often see non-participating providers, keep Plan G on your list for excess charge protection. If you want a firm ceiling, add K or L.
Step 3: Pull Official Benefits Charts
Confirm your short list against the current standardized chart on Medicare.gov’s compare plan benefits page. That single page shows what each letter does, line by line. It’s the fastest way to verify you’re not missing a gap.
Step 4: Gather Quotes The Smart Way
Get at least five quotes for the same plan letter, same ZIP, and same start month. Ask each company if the price is community-rated, issue-age, or attained-age. That rating method tells you how premiums shift over time. Ask about household discounts, auto-pay, or EFT savings. Confirm your health answers will be accepted if you’re outside your six-month Medigap Open Enrollment.
Step 5: Check Rules That Can Change Your Pick
Look up “guaranteed issue rights” for your situation on the official buying a Medigap policy page or the CMS Medigap guide PDF. These rules can let you buy without medical underwriting after certain events. Timing windows are short, so verify dates before you switch or drop anything.
Step 6: Call Your Short-List Doctors
Ask billing desks one question: “Do you accept Medicare assignment?” If yes, you’re good with any Medigap letter you pick. If they don’t, Plan G’s excess-charge protection rises in value. If your favorite clinic is in a state that bans excess charges, that risk may be lower.
Step 7: Do A Real Yearly Cost Matchup
Don’t chase the lowest premium alone. Build an apples-to-apples tally: yearly premium + likely copays/coinsurance + worst-case exposure. For Plan N, include the small office and ER copays you’d hit under normal use. For K or L, include the out-of-pocket cap as your true worst case.
Comparing Medigap Plans With A Shortlist
Here’s a simple way to lay out three finalist letters and see the winner pop off the page. Print this section or recreate it in a spreadsheet while you call carriers.
Coverage Fit
Start with the benefits that matter most to you. If you see specialists often, steady Part B coinsurance relief matters. If you value a hard stop on spending, only K and L provide a cap. If you split time in different states, provider freedom beats network perks you’d see in Medicare Advantage.
Doctor Access
Because Medigap rides on Original Medicare, any doctor who takes Medicare assignment is in play. That’s a wide field. If you’re eyeing providers who may bill excess charges in your state, favor Plan G. If your state bans excess or your doctors are all participating, Plan N can be an easy win.
Price Behavior Over Time
Two companies can sell the same Plan G with very different price paths. Community-rated pricing tends to be steadier across ages; attained-age starts lower but climbs with age; issue-age is based on the age you are when you buy. Add inflation and claim trends on top. That’s why you want at least five quotes and the pricing method on each one.
How To Compare Medigap Plans On Price And Risk
Use this checklist to compare total exposure, not just the monthly premium. Place your three finalist letters side by side and circle the best match for your health profile and budget.
| What To Compare | What To Look For | Why It Matters |
|---|---|---|
| Monthly Premium | Quote for your exact start month, ZIP, and tobacco class. | That’s the baseline you’ll pay, even in a healthy year. |
| Pricing Method | Community-rated, issue-age, or attained-age. | Predicts how fast prices rise over time. |
| Part B Excess Charges | Covered (Plan G) or not (Plan N). | Protects you if a provider bills above the Medicare amount. |
| Office/ER Copays | Plan N has small copays; G doesn’t. | Frequent visits can tip the totals. |
| Out-Of-Pocket Cap | Only K and L set a cap. | Gives a safety stop in a rough year. |
| Household Discount | % off when two live at same address. | Can shave hundreds per year. |
| Company Rate History | Ask about 3–5 year trend. | Hints at future increases. |
| Underwriting | Health questions if outside open enrollment. | Can affect acceptance and price. |
| Extras | Gym perks or discounts (not medical benefits). | Nice to have, but don’t outweigh core coverage. |
Plan G vs. Plan N vs. K/L: Picking Your Lane
Plan G
Broad protection with no Part B copays and coverage for excess charges. You still pay the Part B deductible. Many retirees land here because the math is simple and risk is low.
Plan N
Lower premium, small office and ER copays, and no excess-charge coverage. It’s popular when doctors all accept assignment or in states that ban excess charges. If you average several visits a month, tally those copays against the G premium gap.
Plan K Or L
Lower premiums with a cost-share approach during the year and a built-in cap. If you want a known ceiling and can handle sharing costs up to that limit, these plans shine. They’re rare in some areas, so shop broadly.
Timing Rules That Can Save You Money
Your six-month Medigap Open Enrollment starts when you’re 65+ and enrolled in Part B. During that window, companies must sell you any plan they offer in your state. Outside that window, many states allow medical underwriting. Certain life events trigger “guaranteed issue rights” that can let you enroll without underwriting for a short period. You can confirm these windows in the Choosing a Medigap Policy guide.
Drug, Dental, And Vision: What’s Not In The Box
Medigap pairs with a stand-alone Part D plan for drugs. If you need dental or vision, you’ll buy those separately. Don’t pay a higher Medigap premium just to chase small non-medical perks. Make your pick on the core benefit grid first.
What To Ask Every Company Before You Apply
- Is this price community-rated, issue-age, or attained-age?
- Any household or EFT discounts? What are the rules to keep them?
- Will this application be underwritten? If yes, what triggers a decline?
- How have increases looked over the last three to five years on this letter plan?
- Do you offer a 30-day free-look period if I’m switching from another Medigap plan?
Simple Worksheet To Finish Your Pick
Step A: Lock Your Doctors
Call billing and confirm “Medicare assignment” and excess-charge habits. If any top doctor won’t take assignment, mark Plan G as your default unless state rules remove that risk.
Step B: Tally Three Quotes Per Letter
Price your top two or three letters with at least three companies each. Note the pricing method and any discounts. Line them up by yearly premium from lowest to highest.
Step C: Run A Normal-Year And Rough-Year Scenario
Normal year: your routine visits, therapy, and imaging. Rough year: add a hospital stay and several specialist visits. Compare totals under each letter. Pick the plan that still feels comfortable in the rough year.
Need One-On-One Help?
If you want unbiased counseling before you enroll or switch, connect with your state-run SHIP office through Medicare’s “Talk to Someone” page. These counselors don’t sell policies and can walk you through quotes and timing.
Key Takeaways You Can Act On Today
- Shortlist your letters using the benefit snapshot: G, N, and K/L cover most needs.
- Use the official benefits chart to confirm what each letter does.
- Price at least five companies and record the pricing method.
- Match the plan to your doctors and state rules on excess charges.
- Check if a timing window gives you guaranteed issue rights.
- Pick based on yearly risk, not just the lowest premium.
When you follow these steps, how to compare medigap plans stops feeling messy. You’ll see one letter and one company rise to the top, and you’ll buy with confidence.