Cigna (HealthSpring) vs. UnitedHealthcare Medicare Supplement Plans

Choosing a Medicare Supplement plan can feel overwhelming - especially when you're comparing two well-known insurance companies with seemingly similar coverage. The truth is, while the benefits are identical by law, the premiums, customer service, and overall value can differ dramatically.

If you're deciding between HealthSpring (formerly Cigna) and UnitedHealthcare for your Medigap coverage, you're looking at two very different companies.

HealthSpring offers some of the lowest premiums in the market - Plan G averages around $166/month for a 65-year-old, making it one of the most affordable options available.

UnitedHealthcare, on the other hand, costs a bit more but delivers industry-leading customer service and household discounts that can close the price gap for married couples.

This guide breaks down everything you need to know: premiums for Plan G, Plan N, and High-Deductible Plan G; customer service ratings; state availability; and which company makes the most sense for your situation. By the end, you'll know exactly which carrier offers the best value for your budget and needs.

Let's start with the quick answer, then dive into the details.

Quick Verdict

If you're short on time, here's what you need to know:

HealthSpring (formerly Cigna) wins on price. With Plan G averaging around $166/month for a 65-year-old woman, they're among the cheapest Medicare Supplement carriers in the country.

They're available in 48 states and offer up to 25% in stacking discounts (household + annual pay + autopay + online enrollment).

The trade-off? A higher-than-average customer complaint rate, meaning you may encounter more service issues than with other carriers.

UnitedHealthcare wins on service and stability. As the largest Medicare Supplement carrier in the U.S., they have 45+ years of Medicare experience, an A+ financial rating (the highest possible), and the lowest customer complaint rate in the industry.

Premiums run $180–$260/month for Plan G depending on your ZIP code - higher than HealthSpring, but not dramatically so. For married couples, a 7% household discount helps narrow the gap.

If you value peace of mind and don't want to deal with service headaches, UnitedHealthcare delivers.

What Is Medicare Supplement Insurance?

Before we dive into the pricing comparisons, let's make sure you understand what you're buying.

Original Medicare covers roughly 80% of your healthcare costs. You're responsible for the remaining 20% - and here's the kicker: there's no out-of-pocket maximum.

One serious illness or surgery can cost you tens of thousands of dollars.

2026 Medicare Cost-Sharing Without a Supplement:

• Part A deductible: $1,736 per benefit period
• Part B deductible: $283/year
• Part B coinsurance: 20% of all Medicare-approved services (no cap)
• Skilled nursing facility coinsurance: $194.50/day (days 21–100)
• Foreign travel emergencies: Not covered at all

What Medicare Supplement Insurance Does

A Medigap plan fills those gaps by paying your share of Medicare-covered costs.

You get predictable monthly premiums, no network restrictions, and the ability to see any doctor in the U.S. who accepts Medicare - no referrals needed.

The Key Truth: All Medigap Plans Are Standardized

Here's what most people don't realize: the federal government requires every insurance company to offer the same benefits for the same plan letter.

A Plan G from HealthSpring covers the exact same services as a Plan G from UnitedHealthcare. Word for word. Dollar for dollar.

The only differences between companies are:

• Monthly premium
• Customer service quality
• Available discounts
• Company financial stability

This is why price matters so much. You're not getting "less coverage" by choosing the cheaper option - you're getting identical coverage for less money.

Most Popular Medigap Plans in 2026:

• Plan G - Most comprehensive for new Medicare beneficiaries; covers everything except the $283 Part B annual deductible (96% of new enrollees choose this)
• Plan N - Lower premium with small copays ($20 office visits, $50 ER visits); does NOT cover Part B excess charges
• High-Deductible Plan G - Lowest monthly premium; you pay the first $2,950/year before full coverage kicks in
• Plan F - Most comprehensive plan available (only for those eligible for Medicare before Jan 1, 2020)

Premium Comparison - Plan G (Most Popular Plan)

This is where the rubber meets the road. Plan G is what 96% of new Medicare beneficiaries choose, and for good reason - it's the most comprehensive coverage available to anyone enrolling today.

After you pay the $283 Part B annual deductible, Plan G covers 100% of Medicare-approved costs including:

• Part A deductible ($1,736/benefit period)
• Part A and B coinsurance (the 20% you'd normally pay)
• Skilled nursing facility coinsurance
• Part B excess charges (up to 15% above Medicare rates)
• Hospice coinsurance
• Foreign travel emergency (80% after $250 deductible, up to $50,000 lifetime)

Let's be clear: HealthSpring saves you $168 to $1,128 per year compared to UnitedHealthcare for the exact same coverage. Over 10 years, that's $1,680 to $11,280 in savings.

The Household Discount Factor

For married couples where both spouses enroll, UnitedHealthcare's 7% household discount changes the math slightly:

• UnitedHealthcare at $200/month = $186/month with discount
• HealthSpring at $166/month = no household discount change
• Gap narrows to $20/month for couples

Even with the discount applied, HealthSpring is still cheaper. That $20/month adds up to $240/year or $2,400 over 10 years.

Plan G Verdict: HealthSpring wins - decisively. Unless you have a specific reason to pay more (which we'll discuss in the customer service section), choosing HealthSpring for Plan G is the smart financial move. You're getting identical coverage for significantly less money.

Premium Comparison - Plan N (Lower Premium Alternative)

If you're looking to save even more, Plan N offers lower monthly premiums in exchange for small copays.

What's Different About Plan N:

• Lower monthly premium than Plan G
• Small copays: up to $20 for office visits, up to $50 for ER visits (waived if admitted)
• Does NOT cover Part B excess charges - make sure your doctors don't bill above Medicare rates

Plan N Verdict: HealthSpring wins again - or ties, depending on your ZIP code. Even at the low end of UnitedHealthcare's range ($120/month), you're breaking even. At the high end ($180/month), HealthSpring saves you $720/year.

Before choosing Plan N from either company, confirm your doctors don't charge excess charges. If they do, Plan G is the safer choice since Plan N doesn't cover them.

Premium Comparison - High-Deductible Plan G (Budget Option)

If you're healthy and rarely use medical care, High-Deductible Plan G offers the lowest possible monthly premiums.

How It Works: Same benefits as regular Plan G, but you pay the first $2,950/year out-of-pocket before coverage kicks in. Monthly premiums are dramatically lower - perfect for healthy seniors who want catastrophic protection without high monthly costs.

High-Deductible G Verdict: This one's a tie. UnitedHealthcare actually has competitive pricing on High-Deductible Plan G, often coming in at the lower end of their range ($40–$50/month). Compare quotes in your specific ZIP code.

Financial Stability Comparison

Both companies are financially strong and backed by massive organizations. Yes, UnitedHealthcare's A+ rating is technically higher than HealthSpring's A rating.

But let's be realistic: both companies are rock-solid. The chance of either one failing is essentially zero.

Health Care Service Corporation (HealthSpring's parent) insures 26+ million people and is one of the largest health insurers in America. They're not going anywhere.

Financial Winner: UnitedHealthcare - on paper. In practice, the difference doesn't justify paying thousands more over time.

Key difference: HealthSpring is available in Minnesota and Wisconsin; UnitedHealthcare is not. If you live in MN or WI, HealthSpring is your only option between the two - and a good one.

How to Enroll

You've compared the options and you're ready to move forward. Here's exactly how to enroll - and why timing is everything.

The Best Time: Your Medigap Open Enrollment Period

Your 6-month Medigap Open Enrollment Period begins the month you turn 65 AND enroll in Medicare Part B. This window is critical because it gives you three major protections:

#1. Guaranteed acceptance: Insurance companies cannot deny you for any health reason, regardless of pre-existing conditions

#2. Best available rates: No medical underwriting surcharges based on your health history

#3. Full plan selection: Access to every available plan letter without restrictions

After this six-month window closes, you may be subject to medical underwriting. That means insurance companies can ask detailed questions about your health, request medical records, and either deny coverage or charge significantly higher premiums based on your medical history.

Some seniors end up paying 30-50% more simply because they missed their Open Enrollment Period.

Applying to HealthSpring

Getting started with HealthSpring is straightforward:

1. Visit healthspring.com or call 800-997-1654 to begin your application
2. Verify plan availability in your state -Note that some states may still display Cigna branding during the transition period. This is the same company with identical coverage.
3. Request your personalized quote - Enter your ZIP code and date of birth to see your exact monthly premium for Plan G, Plan N, or High-Deductible Plan G
4. Complete your application - Takes approximately 15-20 minutes online or by phone. No membership fees or additional requirements.
5. Coverage begins - Your policy typically starts the first day of the month following your application approval

Applying to UnitedHealthcare

If you prefer UnitedHealthcare's service and support, here's the enrollment process:

1. Obtain required membership - You'll need an active membership ($16/year) to access UnitedHealthcare Medicare Supplement plans
2. Visit uhc.com or call 1-833-591-5020 to start your application
3. Get your personalized quote - Enter your ZIP code, date of birth, and other basic information to see your exact rates
4. Submit your application - Apply online, by phone, or work with a licensed independent insurance agent at no cost to you
5. Coverage begins - Your policy typically starts the first day of the month following approval

Your 30-Day Free Look Period

Both companies provide a 30-day free look period after enrollment. If you're not satisfied with your plan for any reason, you can cancel within 30 days and receive a full refund of all premiums paid - no questions asked.

This protection allows you to enroll during your Medigap Open Enrollment Period to secure guaranteed acceptance and best-available rates, then take up to 30 days to ensure you've made the right choice.

Which Company Is Right for You?

Let's cut through the noise. For most seniors, the decision is straightforward.

Choose HealthSpring (formerly Cigna) if:

• You want to save $168 to $1,128 per year ($1,680 to $11,280 over 10 years)
• You're comfortable with average customer service for routine claims
• You want to stack discounts up to 25% for even more savings
• You don't want to pay a membership fee
• You live in Minnesota or Wisconsin (UnitedHealthcare isn't available)
• You need Plan B (Pennsylvania only) or Plans C/D (New Jersey only)

Choose UnitedHealthcare if:

• You're willing to pay significantly more for top-tier customer service
• You're married and the 7% household discount closes some (but not all) of the premium gap
• You anticipate needing frequent customer support or have complex health needs
• You need Plan K, L, or M (HealthSpring doesn't offer these)
• You're already paying the membership fee anyway
• Peace of mind from the "most established carrier" matters more to you than saving money

For most seniors, HealthSpring is the smarter financial choice. You're getting identical Plan G coverage for $1,680 to $11,280 less over 10 years.

Unless you have a specific reason to prioritize customer service over price - frequent complex claims, past bad experiences with insurance companies, extreme preference for hand-holding - saving that money makes more sense.

For married couples, run the numbers with UnitedHealthcare's 7% household discount. Even with the discount, HealthSpring usually still wins, but the gap narrows to $15–$20/month ($1,800–$2,400 over 10 years).

At that point, paying slightly more for better service might be worth it to some couples.

For anyone who values premium customer service above all else, UnitedHealthcare earns their higher price tag. But be honest with yourself: are you really going to use that customer service enough to justify spending an extra $12,000 over 20 years?

Bottom Line

When you strip away the branding, marketing language, and carrier reputation, Medicare Supplement comes down to something very simple: A Plan G is a Plan G.

The federal government standardizes the benefits. That means HealthSpring and UnitedHealthcare must cover the exact same medical expenses under the same plan letter. Neither company can offer “better” medical coverage on Plan G.

So the real differences are:

• Premium
• Long-term rate increases
• Financial strength
• Customer service experience
• Available discounts

From a pure value perspective, HealthSpring (formerly Cigna) is priced more aggressively in many markets. At roughly $166 per month in several states, the annual savings compared to UnitedHealthcare can range from a few hundred dollars to well over $1,000 per year.

Over 10 years, that can mean thousands - sometimes five figures - in total savings.

And because HealthSpring allows stackable discounts in many states, the gap can widen even further for married couples or those paying annually.

Now, UnitedHealthcare does offer advantages:

• An A+ (Superior) AM Best rating
• The largest Medicare Supplement enrollment in the country
• Long-standing brand recognition
• Strong customer service infrastructure
• 45+ years focused on Medicare

For beneficiaries who value maximum brand stability, top-tier service metrics, and the reassurance of the largest carrier in the country, paying more may feel worth it.

But for the average Medicare beneficiary - someone who understands how Medigap works, expects to use coverage normally, and wants to control long-term healthcare costs - the price difference is difficult to ignore.

If two companies are offering identical coverage, and one consistently costs less while maintaining strong financial ratings, that’s typically the smarter financial decision.

At the end of the day, this isn’t about which company is “better.” It’s about which one delivers the best value in your ZIP code.

For most seniors in competitive states, HealthSpring offers stronger pricing with comparable financial stability - and that makes it the better value choice.