Coverage Is Standardized — the Rest Is What You're Comparing
A Plan G is a Plan G.
Paying more does not buy broader standardized Plan G or Plan N medical benefits — it buys a different premium, underwriting company, and discount structure.
If you want an even lower monthly premium and don't mind a bigger deductible, High-Deductible Plan G works the same way once you hit the yearly deductible.
Because the coverage itself is identical, price becomes one of the biggest deciding factors when you're comparing the same plan between these two companies.
Medicare.gov confirms price is the only difference between the same lettered plan sold by different companies.
The Price Battle: BCBS vs. UnitedHealthcare by State
To see how Blue Cross Blue Shield and UnitedHealthcare actually compare, we ran Medicare Supplement quotes through CSG Actuarial's quoting platform using sample ZIP codes in all 50 states.
We compared both Plan G and Plan N wherever rates from both companies were available.
In our sample, BCBS came in lower more often — but the winner changed substantially by state.
Plan G — 40 states with both rates
BCBS lower in 28 states
UnitedHealthcare was lower in the other 12.
Plan N — 39 states with both rates
BCBS lower in 23 states
UnitedHealthcare was lower in the other 16.
That doesn't mean BCBS will automatically be cheaper for you — Medicare Supplement premiums vary by ZIP code and applicant information.
But it does show why we don't think you should choose a Medigap company based on brand recognition alone.
Use the tool below to select your state and see how the two companies compared in our sample quote.
Sample premiums based on one ZIP code per state — your actual quote depends on your exact ZIP code, age, and household discounts. See "About This Data" below.
How We Ran the Comparison
Rates were generated through CSG Actuarial using a 65-year-old female, non-smoker applicant, with one sample ZIP code in each state. Rates were pulled on August 9, 2026. Household discounts were not included. Actual rates vary by ZIP code and applicant.
Massachusetts, Minnesota, and Wisconsin use their own state-specific Medigap systems, so no comparable rate was available for either company in our sample.
In a handful of other states, only one company returned a comparable rate for the ZIP code we quoted; the tool shows that single rate rather than a comparison in those cases.
State Availability
The price tool above now also shows which specific plan letters BCBS sells in a handful of states we've researched so far — we're expanding that state by state, so check back if your state isn't covered yet.
Massachusetts, Minnesota, and Wisconsin use their own state-specific Medigap standardization systems rather than the lettered-plan system used elsewhere — which is exactly why the price tool above shows no comparable rate for those three states.
Confirm carrier and plan availability separately for those three states rather than assuming it from a lettered-plan comparison.
A Plan G from Blue Cross and a Plan G from UnitedHealthcare cover the same standardized Medicare gaps.
But the wellness extras packaged alongside the policy can differ by state — sometimes more than people expect.
We reviewed official carrier materials state by state to see whether each company offers a fitness benefit to its Medigap members — select your state below to see what we found.
Wellness-perk findings are based on carrier materials we reviewed and are not standardized Medigap benefits — they can change or be discontinued, and should be confirmed for your exact plan before you rely on them.
UnitedHealthcare is the more consistent of the two: where our research found it, Renew Active is typically included at no additional cost.
BCBS is much more state-specific: depending on your local Blue company, a benefit like SilverSneakers may be included free, tied to a particular "Plus" plan variant, available for an extra fee, or something we couldn't confirm at all for Medigap members specifically.
These are wellness/discount programs, not insurance benefits, and they can change or be discontinued at any time — confirm what's actually on your specific policy before enrolling.
If the premiums in your state are within a few dollars, an included fitness benefit may reasonably break the tie.
But if one company is $40, $60, or $90 less per month for the same Plan G benefits — which our state-by-state data shows happening in plenty of states — I'd put far more weight on the premium and rate history than on a gym membership.
What I've Seen
Clients ask me about wellness perks fairly often, but I can't remember a client telling me years later that a fitness discount was the reason they were happy with their coverage.
The premium and the company's rate history mattered far more to how they felt about the decision down the road.
Which Company Is Right for You?
Start with whichever company is cheaper for the plan you want in your state.
Then check whether that company actually offers the version you want — standard Plan G or Plan N, not a different variant — and whether either company includes a wellness perk you'd actually use.
If the premium gap is small, a genuinely useful included perk can tip the decision.
If the gap is large, it usually shouldn't.
I'd lean toward BCBS when:
- Its local premium is meaningfully lower in your state
- Its recent rate history looks reasonable
- There isn't a feature of the UnitedHealthcare policy that justifies the difference
- You prefer a local company with regional customer service, or a stronger household discount
I'd lean toward UnitedHealthcare/AARP when:
- Its local premium is meaningfully lower in your state
- Its recent rate history looks reasonable
- There isn't a feature of the BCBS policy that justifies the difference
- You prefer a nationally coordinated brand, or you're already an AARP member
Choose neither — for now — if:
Your state's tool result shows both companies priced well above other options, or your state wasn't in our comparable-rate sample.
In many markets, carriers like HealthSpring-branded Medicare Supplement plans (where available), Mutual of Omaha, or a regional insurer offer the identical Plan G or Plan N benefit for noticeably less.
Since the coverage is standardized, that difference is worth checking before you enroll with either brand name.
My Take
In my experience comparing Medigap rates, neither BCBS nor UnitedHealthcare should get an automatic advantage just because of its name — and now we have real numbers across all 50 states that back that up.
I'd choose either company when the tool above shows it's cheaper in your state and its policy structure is competitive, but I wouldn't pay substantially more for the same standardized coverage solely for brand recognition.
How to Evaluate Rate Stability
Most people keep a Medigap policy for a decade or more, so the premium you'd pay in year one matters less than how that premium tends to move over time.
Past rate increases can't predict future ones, but a concrete process helps:
- Ask the agent or carrier for the exact underwriting company and policy form number behind your quote.
- Where available, review your state insurance department's rate filings or approved rate-change notices for that specific policy series.
- Ask whether the block of business is still open to new enrollment. Closed blocks may face different rate dynamics because they're no longer receiving new entrants, although results vary by block and state.
- Confirm whether the rate is attained-age, issue-age, or community-rated — the rules on which methods are allowed vary by state.
- Ask whether any introductory or enrollment discount phases out as you age, on top of standard annual increases.
- Consider whether you could pass medical underwriting today if you wanted to switch carriers later.
Both BCBS and UnitedHealthcare can answer these questions for a specific policy series and state — the answers vary by carrier, state, and even by which underwriting entity issued the policy.
From the Field
The question I get most often isn't "is BCBS or UnitedHealthcare better" — it's "which one will still be a good deal in five years."
I don't have a crystal ball for that, but I do always ask about the policy form number and whether the block is still open, because that's usually a better predictor of future increases than the brand name on the card.
How the Companies Differ
The underwriting company is the legal insurer that actually issues the policy, files rates with the state, collects your premium, and is responsible for paying covered claims.
Blue Cross Blue Shield is a federation of independent, locally operated companies, not one national insurer — each local BCBS company sets its own premiums, underwriting rules, and rate history, which is part of why the state-by-state results above swing so widely.
UnitedHealthcare is more centralized, but its Medigap plans are sold under an AARP-branded arrangement and may be issued by a different UnitedHealthcare-affiliated entity depending on your state — confirm the legal underwriting company shown on your quote rather than assuming it's the same one nationwide.
Published Data
In August 2025, AM Best downgraded the Financial Strength Rating of UnitedHealth Group's health and dental insurance subsidiaries — collectively referred to as UnitedHealthcare — from A+ (Superior) to A (Excellent), citing significant deterioration in operating performance tied largely to Medicare Advantage costs.
The rating action applied to UnitedHealth Group insurance subsidiaries and reflected broader operating-performance concerns.
It should not be interpreted as a change in standardized Medigap benefits or as a specific finding about Medigap claims-paying ability.
Most Blue Cross Blue Shield companies carry ratings in the same A to A+ range — the exact rating depends on which local BCBS company you're comparing.
How We Compared These Companies
Pricing throughout this article comes from real quotes we ran through CSG Actuarial's quoting platform, using one sample ZIP code per state for both Plan G and Plan N.
We treat the state-by-state tool above as the article's primary pricing data — everything else here (company structure, financial strength, discounts, extras) is secondary context for when premiums are close.
Carrier benefits, discounts, underwriting rules, membership requirements, and optional programs may change — confirm all details before applying.
Sources and Review Standards
- CSG Actuarial — sample Medicare Supplement quotes, Plan G and Plan N, all 50 states
- Medicare.gov — Medigap standardization and state-specific systems in MA/MN/WI
- Medicare.gov — price as the only difference between companies for the same plan letter
- AM Best — August 2025 rating action on UnitedHealth Group and its subsidiaries
- Blue Cross Blue Shield Association — federation structure
- UnitedHealthcare — AARP licensing arrangement
- KFF — Medigap rating methods and state-by-state rules
- AHIP — 2024 Medicare Supplement enrollment data (plan-type popularity)
Sample premiums are illustrative and may not reflect current rates in your area. Confirm current premiums using your ZIP code and applicant information before enrolling. Wellness-perk findings come from carrier materials we reviewed state by state; they are not standardized Medigap benefits, can change without notice, and should be confirmed for your exact plan before you rely on them.
Plan Popularity
According to AHIP's 2024 enrollment report, Plan G and Plan N account for a large share of Medigap enrollment — roughly 43% and 33% of Medigap enrollees, respectively, or close to three out of every four enrollees combined.
That figure describes existing Medigap enrollees across standardized plan letters, not all new Medicare beneficiaries generally, since many beneficiaries choose Medicare Advantage or no supplemental coverage at all.
Bottom Line
Neither Blue Cross Blue Shield nor UnitedHealthcare is automatically the better Medicare Supplement company.
Both brands are associated with large, established insurers, although financial ratings should be checked for the specific underwriting company offering the policy.
Across our sample of all 50 states, BCBS came out cheaper more often than UnitedHealthcare for both Plan G and Plan N — but the margin, and sometimes the winner, changes state by state.
Before enrolling with either company, I'd:
- Check your state in the tool above
- Confirm the current premium in your specific ZIP code
- Ask about household and enrollment discounts, and how long any introductory discount lasts
- Ask about that policy series' rate history, underwriting entity, and rating method
- Compare at least one or two other financially stable carriers selling the same plan letter — our Medicare Supplement comparison chart and roundup of top-rated companies are good starting points
The right choice is the carrier offering the coverage you want at a sustainable price in your ZIP code — not necessarily the company with the most familiar name.
