Medicare Supplement Plan B builds directly on Plan A’s basic benefits by adding one specific piece of coverage: the Medicare Part A deductible, paid in full whenever it applies.
What Plan B Covers
- Everything included in Plan A
- The Medicare Part A deductible
Plan B is one of the less commonly sold Medigap plans today, since Plan G typically offers substantially more coverage for a premium difference that many people find worthwhile. Still, if a hospital stay is your main concern and you want to keep costs low, it’s worth having us compare it directly against Plan G pricing in your area.
What’s Still Missing
Even with the Part A deductible fully covered, Plan B still leaves you personally responsible for the full Part B deductible every single year, skilled nursing facility coinsurance, and any foreign travel emergency costs whatsoever. It’s a modest step up from Plan A, not a comprehensive plan — which is exactly why it occupies such a narrow niche in the market.
The Real Comparison: Plan B vs. Plan G
Plan G covers everything Plan B covers, plus the Part B deductible, plus Part B excess charges, plus skilled nursing coinsurance, plus foreign travel emergency care. That’s a substantial amount of additional protection for what’s often a modest premium increase over Plan B. In the quotes we’ve run, it’s uncommon for Plan B’s premium savings to outweigh the value of everything Plan G adds — but “uncommon” isn’t “never,” so we still check actual numbers rather than assuming.
Who Actually Chooses Plan B
In practice, Plan B genuinely tends to come up for people who specifically want the Part A deductible handled (since a hospital stay is their single biggest worry) but are trying hard to keep premiums as low as possible otherwise, and for whom a specific carrier’s actual Plan B pricing happens to beat its own Plan G premium by more than the coverage gap would reasonably suggest it should.
Seeing the Actual Trade-Off in Dollar Terms
It helps to walk through what Plan B’s one added benefit actually means in practice. The Medicare Part A deductible applies once per benefit period — generally once per hospital admission, not once per doctor visit — so in a year with no hospitalization at all, that particular benefit costs you nothing whether you have Plan A or Plan B. The only year Plan B’s extra coverage actually pays off is a year with a qualifying hospital stay, and even then, the value is capped at a single Part A deductible. That’s the whole trade you’re paying an extra premium for: protection against one specific, capped cost, in years you happen to need it. Whether that’s worth the premium difference over Plan A depends entirely on how that specific carrier prices the two plans relative to each other, which is exactly the kind of comparison we run rather than assume.
How Plan B Premiums Are Priced
Like other standardized Medigap plans, Plan B premiums are set using community rating, issue-age rating, or attained-age rating, depending on the carrier. Attained-age policies often start cheaper but climb faster as you age; issue-age and community-rated policies tend to start a bit higher but grow more predictably over time. Because Plan B is one of the lower-volume plan letters at most carriers, it’s worth specifically asking how that carrier’s Plan B book has trended on rate increases historically — a thinner pool of policyholders can sometimes see steeper adjustments over time than a carrier’s higher-volume plans like Plan G or Plan N.
Plan B vs. the Cost-Sharing Plans
Because Plan B, Plan K, and Plan L all tend to attract budget-conscious buyers looking for something more affordable than Plan G, we usually compare all three together rather than looking at Plan B alone. Plan B covers the Part A deductible in full but leaves the Part B deductible and skilled nursing coinsurance completely uncovered, with no overall cap on your annual exposure. Plan K and Plan L, by contrast, cover a percentage of most Medicare-covered costs and cap your total yearly out-of-pocket exposure at a known, fixed limit. In many of the comparisons we’ve run, that annual cap ends up being worth more to a budget-conscious client than Plan B’s narrower, uncapped protection — though it genuinely depends on the specific premiums each carrier is charging in your county at the time you’re comparing.
A Client Example
A client comparing Plan A and Plan B for the first time assumed Plan B was obviously worth the extra premium, since “it covers more.” When we pulled actual quotes from carriers licensed in her county, the annual premium difference between the two plans turned out to be larger than a full Part A deductible — meaning that even in a year with a hospital stay, she’d have come out ahead financially by choosing Plan A and simply paying the deductible herself, compared to paying Plan B’s higher premium every single year regardless of whether she was ever hospitalized. That’s not universally true of every carrier or every county, which is exactly why we ran her specific numbers rather than assuming “more coverage” automatically meant “better value” for her situation.
Plan B and Medicare Advantage Aren’t a Combination
Worth stating plainly, since it’s a genuine point of confusion for some clients: Plan B, like every Medigap plan, only works alongside Original Medicare, not a Medicare Advantage plan. You wouldn’t hold a Plan B policy on top of Medicare Advantage coverage, and it wouldn’t add any extra benefit even if you tried, since the two simply aren’t designed to stack together. If you’re currently enrolled in a Medicare Advantage plan and you’re weighing a move to Original Medicare plus a Medigap policy instead, that’s a genuinely bigger decision involving your specific doctors, your prescriptions, and your current plan’s network — worth a separate, dedicated conversation rather than folding it into a narrow plan-letter comparison.
What Happens if You Move
Plan B is guaranteed renewable and works the same way nationwide, since Medigap fills gaps in Original Medicare rather than operating through a local provider network. If you relocate to another state, your existing Plan B policy continues to work wherever Medicare is accepted, though premiums for the same plan letter can vary meaningfully by state and county — worth having us re-shop your coverage after a move, even though nothing requires you to switch carriers just because your address changed.
Enrollment Timing and Guaranteed Issue Rights
Your 6-month Medigap Open Enrollment Period begins the month you’re both 65 or older and enrolled in Part B, whether or not you’re still working — delaying Part B because you have employer coverage simply delays the start of this window until you actually enroll. Applying during that stretch generally means a carrier can’t turn you down or charge more due to health conditions. Outside that window, Plan B applications are typically subject to medical underwriting, though certain life events — losing employer coverage or a Medicare Advantage plan closing in your area, for example — can open a separate guaranteed-issue right regardless of timing. Given how narrow a plan Plan B is, it’s especially worth locking in guaranteed acceptance during your initial window if you’re at all unsure whether you’ll want to upgrade to broader coverage later, since re-qualifying after a health change isn’t something you can count on.
Common Questions
Is Plan B widely available?
Fewer carriers actively market Plan B compared to Plan G or Plan N, so availability can be genuinely more limited depending on your specific area. We’ll check what’s actually offered by carriers in your county before assuming it’s a realistic option for you.
Should I skip straight to comparing Plan G instead?
For most people, yes — but it genuinely costs nothing to have us check both, and occasionally the actual numbers surprise us. We’d rather run the comparison than assume.
Let’s Run Your Actual Numbers
Because Plan B occupies such a narrow spot in the Medigap lineup, it’s genuinely one of the plans where a real, side-by-side comparison against Plan A, Plan G, and the cost-sharing plans matters more than usual — the “obvious” choice based on the plan letter alone often isn’t the one that actually saves you the most money once real premiums are on the table. We’ll pull current quotes from the carriers actually licensed in your specific county, walk through your health history and any conditions worth factoring in, and lay out exactly what each option would cost you in a typical year and in a genuinely bad one, so you’re choosing based on real numbers rather than which plan sounds like the safer middle ground.
We’ll pull real Plan B and Plan G quotes for carriers serving Bethel, Cincinnati, and the rest of Hamilton, Clermont, Butler, and Warren County so you can see the actual trade-off, in person at our Bethel office if you’d prefer, or over the phone at whatever time works best for your schedule.