Why Original Medicare Alone Isn't Enough
Original Medicare (Parts A and B) is a solid foundation, but it was never designed to cover everything. The gaps it leaves behind can translate into serious financial exposure — and in 2026, those gaps are wider than ever.
Here's what you're responsible for under Original Medicare in 2026:
| Cost Type | 2026 Amount |
|---|---|
| Part A Deductible (per benefit period) | $1,736 |
| Part B Deductible (annual) | $283 |
| Part B Coinsurance | 20% of all approved costs — no cap |
| Hospital Coinsurance (Days 61–90) | $433/day |
| Skilled Nursing Facility Coinsurance (Days 21–100) | $216.50/day |
| Annual Out-of-Pocket Maximum | None |
The most dangerous gap of all? Original Medicare has no out-of-pocket maximum. A serious illness or prolonged hospital stay could cost you tens of thousands of dollars — with no ceiling. Medicare Supplement insurance (Medigap) is specifically designed to seal these gaps, giving you predictable costs and financial peace of mind.
2026 Part B Premium Alert
The Most Popular Medigap Plans: G vs. N
Medigap plans are standardized by the federal government, meaning a Plan G from one insurer covers exactly the same benefits as a Plan G from another. The difference between carriers comes down to price, customer service, and rate stability — not coverage.
Of the 10 standardized plan types available, Plan G and Plan N are the most popular choices for new enrollees in 2026.
Plan G: The Gold Standard
Plan G is the most comprehensive Medigap plan available to new enrollees. After you pay the annual Part B deductible ($283 in 2026), Plan G covers 100% of all remaining Medicare-approved costs — no copays, no coinsurance, no surprises.
Plan G covers:
- Part A hospital deductible and coinsurance
- Part A hospice care coinsurance
- Skilled nursing facility coinsurance
- Part B coinsurance (after the Part B deductible)
- Part B excess charges
- First 3 pints of blood
- 80% of foreign travel emergency care
Best for: Frequent healthcare users, anyone with chronic conditions, retirees who travel, or anyone who values maximum predictability in their healthcare budget.
Plan N: The Budget-Friendly Alternative
Plan N offers nearly identical core coverage to Plan G but trades lower monthly premiums for modest out-of-pocket costs when you use care.
Key differences vs. Plan G:
Plan G
- Part B Excess Charges Covered
- No Office Visit Copays
- No ER Copays
- Part A Deductible Covered
Plan N
- Part B Excess Charges NOT Covered
- Up to $20 Office Visit Copay
- Up to $50 ER Copay (if not admitted)
- Part A Deductible Covered
Best for: Relatively healthy seniors with infrequent doctor and ER visits who want to save on monthly premiums.
Plan G vs. Plan N: Cost Comparison
| Factor | Plan G | Plan N |
|---|---|---|
| Average Monthly Premium (age 65) | $120 – $180 | $80 – $140 |
| Office Visit Copay | $0 | Up to $20 |
| ER Copay (not admitted) | $0 | Up to $50 |
| Part B Excess Charges | Covered | Not Covered |
| Best For | Frequent care, predictability | Healthy, low-utilization seniors |
Medicare Savings Tip
Top-Rated Medicare Supplement Companies of 2026
Because Medigap benefits are standardized, choosing the right insurance company is just as important as choosing the right plan. Below are the top-ranked carriers for 2026 based on premiums, rate increase history, financial strength, and customer satisfaction.
🥇 1. Mutual of Omaha — Best Overall
Mutual of Omaha consistently earns top marks for its competitive pricing, exceptional rate stability, and outstanding customer service. Their large risk pool helps keep rate increases more predictable than most competitors, and they offer flexible underwriting options.
Pros
- Highly competitive Plan G and Plan N premiums
- Strong long-term rate stability
- Top-rated customer service and claims handling
- Available in all 50 states
Cons
- Online quoting not always available in every state
- Must speak with an agent for some plan options
🥈 2. UnitedHealthcare / AARP — Best for Brand Trust & Digital Tools
UnitedHealthcare, backed by the AARP brand, is the largest Medigap insurer in the nation by enrollment. They offer excellent digital tools, a trusted brand, and nationwide availability. Note that AARP membership (about $12–$16/year) is required.
AM Best Rating: A (Excellent)
Pros
- Largest Medigap provider in the U.S.
- Strong digital tools and online account management
- AARP brand recognition and member perks
- Available in all 50 states
Cons
- Premiums can run slightly higher than competitors
- Requires AARP membership to enroll
🥉 3. Cigna — Best for Customer Perks
Cigna earns strong marks for customer satisfaction, offering extras like 24/7 nurse hotlines and wellness perks alongside competitive premiums. Their AM Best A (Excellent) rating reflects solid financial stability.
AM Best Rating: A (Excellent)
Pros
- Competitive Plan G and N premiums
- 24/7 nurse line and wellness benefits included
- Highly rated customer service
Cons
- Not available in Massachusetts or Minnesota
- Some premium rates are higher for older enrollment ages
4. Humana — Best for Add-On Benefits
Humana is a strong choice if you want to bundle dental, vision, or hearing coverage alongside your Medigap plan. Their premiums vary more by location, so it pays to compare carefully.
AM Best Rating: A (Excellent)
Pros
- Easy-to-use online quoting and enrollment tools
- Dental and vision add-on bundles available
- Strong AM Best financial rating
Cons
- Premium pricing varies significantly by location
- Not available in Massachusetts, Minnesota, or Wisconsin
5. State Farm — Best for Agent-Based Support
State Farm is a solid option for seniors who prefer working face-to-face with a local insurance agent. Their financial strength is well-established, though they offer fewer Medigap-specific data points compared to specialty carriers.
Pros
- Trusted brand with strong local agent network
- Long-standing financial stability
Cons
- Less Medigap-specific data and plan variety
- Availability and plan options vary by state
Quick Company Comparison
| Company | AM Best Rating | Avg. Plan G Premium | Availability | Best For |
|---|---|---|---|---|
| Mutual of Omaha | A+ (Excellent) | $120–$150/mo | All 50 states | Overall value |
| UnitedHealthcare/AARP | A (Excellent) | $130–$165/mo | All 50 states | Brand trust, digital tools |
| Cigna | A (Excellent) | $115–$155/mo | 48 states | Customer perks |
| Humana | A (Excellent) | $135–$175/mo | 47 states | Add-on benefits |
| State Farm | A (Excellent) | Varies | Select states | Agent relationships |
Medigap vs. Medicare Advantage: Which Is Right for You?
One of the biggest decisions you'll face is whether to pair Original Medicare with a Medigap plan — or ditch Original Medicare altogether in favor of a Medicare Advantage (Part C) plan. Here's an honest breakdown:
Side-by-Side Comparison
| Factor | Medigap + Original Medicare | Medicare Advantage |
|---|---|---|
| Monthly Premium | $80–$300+ | $0–$14 avg. |
| Out-of-Pocket Maximum | Very low (gaps mostly filled) | Up to $9,250/year |
| Doctor/Hospital Choice | Any Medicare-accepting provider nationwide | Network-restricted (HMO/PPO) |
| Referrals Required | No | Often yes (HMO plans) |
| Drug Coverage | Separate Part D plan needed | Usually bundled |
| Dental/Vision/Hearing | Not included | Often included |
| Travel Coverage | Yes (some plans cover 80% abroad) | Limited |
| Predictable Costs | ✅ High | ⚠️ Variable |
Pros
- Medigap: See any doctor in the U.S. — no networks, no referrals
- Medigap: Predictable costs ideal for chronic conditions or frequent care
- Medicare Advantage: $0 premiums common, extras like dental and vision
- Medicare Advantage: Annual out-of-pocket cap ($9,250 max)
Cons
- Medigap: Higher monthly premiums than Medicare Advantage
- Medigap: No built-in drug, dental, or vision coverage
- Medicare Advantage: Network restrictions may limit provider access
- Medicare Advantage: High potential out-of-pocket costs if you need lots of care
Choose Medigap if: You have ongoing health needs, see specialists regularly, travel frequently, or simply want to know exactly what you'll pay every month.
Choose Medicare Advantage if: You're generally healthy, comfortable with a network, and want to minimize monthly premiums while gaining extras like dental and vision.
How and When to Enroll: Open Enrollment & Guaranteed Issue Rights
Getting the timing right is critical with Medigap. Miss your window, and you could face medical underwriting — meaning insurers can charge you more or even deny coverage based on your health history.
Your Medigap Open Enrollment Period
Your 6-month Medigap Open Enrollment Period begins on the first day of the month you turn 65 AND are enrolled in Medicare Part B. During this window:
- Insurers cannot deny you coverage based on health conditions
- You cannot be charged more due to pre-existing conditions
- You can enroll in any Medigap plan offered in your state
⚡ Example: If you turn 65 and enroll in Part B on July 1, your open enrollment window runs July 1 – December 31.
Guaranteed Issue Rights
Even outside your open enrollment window, certain life events trigger guaranteed issue rights, allowing you to enroll without underwriting:
- Your Medicare Advantage plan is discontinued
- You move out of your plan's service area
- You lose employer-sponsored group health coverage
- You enrolled in Medicare Advantage at 65 and want to switch back within 12 months (trial right)
After Open Enrollment: Medical Underwriting
If you apply for Medigap outside your open enrollment window and no guaranteed issue right applies, insurers can:
- Require a health questionnaire
- Charge higher premiums based on health history
- Deny your application entirely
Don't Miss Your Window
How to Compare Quotes and Choose the Right Plan
Because Medigap benefits are 100% standardized, price and carrier stability are the deciding factors when comparing plans.
Step-by-Step Guide
- Determine your plan type first. Decide between Plan G (maximum coverage) or Plan N (lower premiums, minor cost-sharing). Your health usage patterns should guide this decision.
- Get quotes from multiple carriers. The same Plan G can vary by $50–$100/month depending on the insurer and your ZIP code. Always compare at least 3–5 quotes.
- Check rate increase history. Low premiums today mean nothing if a carrier raises rates 15% every year. Ask about historical rate increases before committing.
- Verify AM Best financial ratings. Stick to carriers with an AM Best rating of A (Excellent) or better to ensure long-term claims-paying reliability.
- Review household discounts. Many carriers offer 5–12% discounts if two people in the same household enroll together.
- Consider the pricing methodology. Medigap plans use three pricing structures — community-rated (same price for all ages), issue-age-rated (locked at your age at enrollment), and attained-age-rated (increases as you age). Issue-age or community-rated plans often provide the best long-term value.
Medicare Savings Tip
Frequently Asked Questions
What is the best Medicare Supplement plan for 2026?
Plan G is widely considered the best overall Medicare Supplement plan for 2026. It covers virtually all gaps in Original Medicare — including the Part A deductible, all coinsurance, and Part B excess charges — after you pay the annual Part B deductible of $283. For healthy seniors seeking lower premiums, Plan N is an excellent runner-up. The "best" plan ultimately depends on your health needs and budget.
How much do Medicare Supplement plans cost in 2026?
Medigap premiums vary based on your age, ZIP code, gender, tobacco use, and the carrier you choose. For a 65-year-old non-smoker, Plan G premiums typically range from $120 to $180 per month, while Plan N premiums typically range from $80 to $140 per month. Always compare quotes from multiple carriers, as the same plan can vary by $50–$100/month depending on the insurer.
What are the top 5 Medicare Supplement insurance companies?
Based on premiums, rate stability, financial strength, and customer satisfaction, the top 5 Medigap companies in 2026 are: (1) Mutual of Omaha, (2) UnitedHealthcare/AARP, (3) Cigna, (4) Humana, and (5) State Farm. All five carry strong AM Best financial ratings, but Mutual of Omaha consistently earns the highest marks for overall value, rate stability, and customer service.
Is Medigap better than Medicare Advantage?
Neither option is universally better — it depends on your situation. Medigap pairs with Original Medicare to give you unlimited provider access and very predictable costs, making it ideal for people with ongoing health needs or frequent travel. Medicare Advantage offers lower monthly premiums (often $0) and extras like dental/vision, but restricts you to a network and can expose you to up to $9,250 in out-of-pocket costs per year.
Can I be denied a Medicare Supplement plan?
During your 6-month Medigap Open Enrollment Period (which begins when you're 65 and enrolled in Part B), insurers cannot deny you coverage or charge more based on your health. Outside this window, unless you qualify for guaranteed issue rights, insurers may require medical underwriting and can deny coverage or charge higher premiums based on your health history. This is why enrolling during your open enrollment window is so important.