Nearly half of Americans approaching 65 have significant misconceptions about Medicare. According to a Kaiser Family Foundation survey, 47% of adults nearing Medicare eligibility couldn't correctly identify basic program features. These misconceptions don't just cause confusion, they lead to permanent financial penalties, coverage gaps, and thousands in unnecessary costs.
Here are 12 myths that trip people up, and the facts that could save you real money.
Myth 1: Is Medicare Really Free?
Reality: No. Part A (hospital coverage) is premium-free for most people, but that's where "free" ends. In 2026, Part B costs $202.90/month ($2,434.80/year). You'll also face a $1,736 Part A hospital deductible per benefit period, a $283 Part B deductible, and 20% coinsurance on Part B services with no out-of-pocket maximum. Add a Medicare Supplement premium ($100 to $300/month) and Part D drug plan ($10 to $60/month), and most beneficiaries pay $3,000 to $8,000 per year. See our state-by-state cost breakdown.
Myth 2: Does Medicare Cover Everything?
Reality: No, and the gaps are significant. Original Medicare does not cover:
- Dental care (cleanings, fillings, dentures, extractions)
- Vision care (routine eye exams, glasses, contacts)
- Hearing aids and hearing exams for fitting
- Most long-term care (nursing home custodial care, assisted living)
- Care outside the United States (with limited exceptions)
- Cosmetic surgery
According to CMS, these uncovered services account for a significant portion of healthcare spending among seniors. Many people address these gaps through Medicare Advantage plans (which often include dental, vision, and hearing) or separate supplemental policies.
Myth 3: Can You Sign Up for Medicare at Any Time?
Reality: No, and missing your window costs you permanently. Your Initial Enrollment Period is a 7-month window around your 65th birthday. Miss it, and you can only enroll during the General Enrollment Period (January to March), with coverage starting July 1, and you'll pay a 10% Part B penalty per year of delay, for life. That's not a one-time fine; it's a permanent surcharge on every Part B premium payment. See our complete enrollment timeline.
Myth 4: Are All Medicare Advantage Plans the Same?
Reality: No, plans vary enormously. Two $0-premium Medicare Advantage plans in the same zip code can have completely different doctor networks, drug formularies, copay structures, and out-of-pocket maximums. One might cover your cardiologist and medications; another might not. According to KFF, there are an average of 43 Medicare Advantage plans available per county. Read about 7 costly Advantage mistakes.
Myth 5: Can You Switch from Medicare Advantage to a Supplement Plan Anytime?
Reality: Not without consequences. After your initial 6-month Medigap Open Enrollment Period, switching from Advantage to a Supplement requires medical underwriting. If your health has declined, which is statistically likely over time, you could be denied coverage entirely. According to AHIP, approximately 8% of Advantage enrollees try to switch each year, but many can't qualify. This is the #1 factor to consider when choosing between Advantage and Supplement.
Myth 6: Do Medicare Supplement Plans Differ by Company?
Reality: Benefits are identical, only the price differs. Medigap plans are standardized by the federal government. Plan G from Mutual of Omaha covers exactly the same things as Plan G from UnitedHealthcare, Aetna, or any other carrier. The only differences are the premium, the carrier's financial strength (A.M. Best rating), and their rate increase history. This means you should shop purely on price, company stability, and rate track record. Read our guide to choosing between Plan G, N, and HD G.
Myth 7: Do You Need Part D if You Don't Take Any Medications?
Reality: Yes, skipping Part D costs you permanently. If you delay Part D enrollment without creditable drug coverage, you'll face a 1% penalty per month of delay added to your Part D premium for life. Example: delay 24 months = 24% surcharge. At the national base premium of $36.78/month, that's an extra $8.83/month permanently. According to CMS, over 400,000 beneficiaries are currently paying Part D late-enrollment penalties. Even a $7/month plan protects you from this penalty. Read our complete Part D guide.
Myth 8: Can Your Spouse Use Your Medicare?
Reality: No, Medicare is individual coverage. Unlike employer plans, you cannot add a spouse or dependent to Medicare. Each person must independently qualify (through age, disability, or work history) and enroll separately. A spouse can qualify based on their partner's work record (if the working spouse has 40+ quarters of Medicare-taxed employment), but they still need their own enrollment.
Myth 9: Is Medicare Advantage Always Cheaper Than a Supplement?
Reality: Only in healthy years. Medicare Advantage has lower monthly premiums (often $0), but charges copays and coinsurance at every doctor visit, lab test, and hospital stay. In a year with a major health event, you could pay up to the out-of-pocket maximum ($5,000 to $8,850 in 2026). A Supplement Plan G costs $120 to $200/month but your total out-of-pocket is capped at the Part B deductible ($283/year). For someone with a $100,000 hospitalization, Plan G costs $283. Advantage could cost $8,850.
Myth 10: Is Medicare the Same as Medicaid?
Reality: They're completely different programs. Medicare is federal health insurance based on age/disability. Medicaid is a joint federal-state program based on income. They serve different populations with different rules, but approximately 12 million Americans qualify for both ("dual eligibles"). Read our full Medicare vs. Medicaid comparison.
Myth 11: Does Medicare Cover Ozempic and Weight Loss Drugs?
Reality: Starting in 2026, yes, with limitations. The Treat and Reduce Obesity Act removed the Part D anti-obesity medication exclusion. Medicare Part D plans can now cover FDA-approved weight loss drugs like Wegovy and Zepbound for beneficiaries with a BMI of 30+ (or 27+ with weight-related conditions). But coverage varies by plan, prior authorization is usually required, and costs can still be $50 to $300/month until you hit the $2,100 out-of-pocket cap. Read our complete guide to Medicare and weight loss drugs.
Myth 12: Can You Only Get Help with Medicare During Enrollment Periods?
Reality: Licensed agents are available year-round. While you can only change plans during specific enrollment windows, you can get education, plan reviews, and preparation help any time. In fact, the best time to start working with an agent is 2 to 3 months before a decision deadline, not during the enrollment rush. Schedule a free consultation anytime.
Frequently Asked Questions About Medicare Myths
What's the most expensive Medicare myth?
Missing enrollment deadlines (Myth 3). A 10% Part B penalty per year of delay is permanent. Delay 5 years = 50% surcharge on Part B premiums for the rest of your life. At $202.90/month, that's an extra $101.45/month, $1,217/year, forever.
Where can I find accurate Medicare information?
The most reliable sources are Medicare.gov (official CMS website), your State Health Insurance Assistance Program (SHIP), and independent licensed agents who are not affiliated with a single carrier. Be cautious of TV commercials and mailers, they often promote specific plans rather than helping you compare all options.
Is there a penalty for having too much Medicare coverage?
No financial penalty, but you can overpay. For example, if you have a Medicare Supplement AND Medicare Advantage, one of those plans isn't necessary (they serve different purposes). An independent agent can help you right-size your coverage.