Can you have Medicare and insurance at the same time?

Editorial team Published on

Yes, you can have Medicare and another health insurance plan at the same time.

When you have dual coverage, a rule called coordination of benefits decides which insurance pays first.

How Payment Works

  • Primary Payer: This insurance pays your medical bills first, up to its limit.
  • Secondary Payer: This insurance pays the remaining costs that the primary plan did not cover.

Common Types of Additional Insurance

  • Employer or Retiree Coverage: You can keep health coverage from a job or a spouse's job. One plan pays first based on the size of the company.
  • Medicaid: People with low income can have both. This is called being dually eligible.
  • TRICARE: Military members and veterans can combine TRICARE with Medicare.
  • Medigap (Supplemental): You can buy a private Medigap policy to help pay costs that Original Medicare does not cover.

Important Limits

  • You cannot have an ACA Marketplace plan and Medicare at the same time.
  • You do not get to choose which plan pays first; the rules depend on your specific type of insurance.

Should I keep my health insurance if I have Medicare?

Whether you should keep your other health insurance depends entirely on the type of insurance you have.

Marketplace or Individual Plans (ACA)

  • Drop it: You generally should not keep or buy a Marketplace coverage plan if you have Medicare.
  • Once you are eligible for Medicare, you lose any tax credits or savings on a Marketplace plan.
  • It is also illegal for anyone who knows you have Medicare to sell you a Marketplace policy.

Employer or Union Coverage

  • You can keep it: If you or your spouse are still working and have group health coverage from an employer with 20 or more employees, you can keep it alongside Medicare.
  • Who pays first: In large companies (20+ employees), the employer plan pays first, and Medicare pays second. In smaller companies (fewer than 20), Medicare usually pays first.
  • Check rules: Ask your employer's benefits administrator how their plan coordinates with Medicare before making a choice.

Retiree Coverage

  • Keep or drop based on cost: If you receive health insurance from a former employer or union retirement plan, Medicare will pay first and your retiree plan will pay second.
  • Evaluate whether the monthly retiree premium is worth the out-of-pocket savings it provides.

Medicaid

  • Keep both: If you qualify for both programs (dual-eligible), you should keep Medicaid. Medicaid can help cover costs that Medicare does not, such as certain premiums, copays, and long-term care.

What is the best health insurance to have with Medicare?

The "best" insurance to pair with Medicare depends on whether you choose to stick with Original Medicare and add a supplement, or replace it with an all-in-one private plan.

Option 1: Medigap (Medicare Supplement) + Original Medicare

If you want the freedom to see any doctor who accepts Medicare nationwide without needing referrals, you should pair Original Medicare (Parts A and B) with a Medigap policy. Medigap covers the out-of-pocket costs (like copays and coinsurance) that Original Medicare leaves behind.

  • Plan G and Plan N are generally considered the best and most comprehensive choices available for standard coverage.
  • Top-rated providers: Mutual of Omaha, State Farm, and AARP/UnitedHealthcare consistently rank highest for stability, customer service, and rate history.

Option 2: Medicare Advantage (Part C)

If you want extra perks—like dental, vision, hearing, and built-in prescription drug coverage—at a lower monthly premium, a Medicare Advantage plan replaces your Original Medicare with a private insurance contract. These plans usually use local provider networks (HMOs or PPOs).

  • Top-rated national providers:
    • Humana: Highly rated for widespread plan availability and robust major-carrier options.
    • Aetna: Noted for high federal government (CMS) star ratings and extensive $0-premium plan availability.
    • UnitedHealthcare: Best for sheer network size, offering access to massive provider directories.
    • HealthSpring (formerly Cigna): Known for low-cost plan availability.

What are the biggest mistakes people make with Medicare?

The biggest mistake people make with Medicare is missing enrollment windows, which can lead to permanent financial penalties and coverage gaps.

Timing and Enrollment Mistakes

  • Missing Deadlines: Failing to sign up during your Initial Enrollment Period (IEP) around age 65 triggers lifelong financial penalties for Part B and Part D.
  • Misjudging Work Coverage: Assuming you can delay enrollment while working past 65 without checking if your employer plan is "creditable coverage" (plans with fewer than 20 employees often require Medicare to go first).
  • Missing the Medigap Window: Waiting past your 6-month Medigap Open Enrollment Period (which starts when you turn 65 and enroll in Part B) means you may have to pass medical underwriting to get a supplemental plan.

Plan Choice and Cost Mistakes

  • Focusing Only on Premiums: Choosing a plan with a low or $0 monthly premium without checking deductibles, copays, or maximum out-of-pocket costs.
  • Ignoring Annual Changes: Not reviewing your plan’s Annual Notice of Change (ANOC) or skipping the Annual Enrollment Period, which leads to surprise costs as drug formularies and doctor networks shift yearly.
  • Assuming Doctors are In-Network: Failing to verify if your preferred physicians and hospitals accept your specific Medicare Advantage or Part D network.
  • Thinking Medicare is Free: Forgetting that Original Medicare has monthly premiums, deductibles, and coinsurance, and does not cover routine dental, vision, or hearing care.

How does Medicare work if you already have insurance?

When you have Medicare and other health insurance, the process called coordination of benefits decides which insurance pays first.

The primary payer pays up to its limit first, and then sends any remaining balance to the secondary payer. You can review official details at the Medicare Coordination of Benefits Guide.

Who Pays First?

The payment order depends on your specific employment status and type of coverage:

  • Working past age 65 (Large Employer): If your employer or your spouse’s employer has 20 or more employees, the group health plan pays first and Medicare pays second.
  • Working past age 65 (Small Employer): If the employer has fewer than 20 employees, Medicare pays first and the group plan pays second.
  • Retired: If you are retired and have retiree coverage, Medicare pays first and your retiree plan pays second.
  • COBRA: If you have COBRA continuation coverage, Medicare pays first and COBRA pays second.
  • Medicaid: Medicare always pays first; Medicaid steps in second to help cover remaining costs like copays and deductibles for eligible individuals.
  • Disability under 65: If you have coverage from an employer with 100 or more employees, that plan pays first. If fewer than 100 employees, Medicare pays first.
  • End-Stage Renal Disease (ESRD): Your group health plan pays first for a 30-month coordination period, and Medicare becomes the primary payer after that.
  • Workers' Compensation or No-Fault/Liability: These programs always pay first for related medical claims.

Key Rules to Remember

  • No choosing: You cannot choose which insurance company pays first; it is strictly decided by the rules above.
  • Part B requirement: If your employer or retiree plan is secondary, that plan may require you to sign up for Medicare Part B before it will pay any claims.
  • Conditional payments: If your other insurance does not pay a claim within 120 days, Medicare may make a temporary "conditional payment" to prevent you from being billed, which it will later recover.

Can I Have Medicare and Employer Health Coverage?

9 related questions found

How much does health insurance cost if you have Medicare?

The total cost of your health insurance under Medicare typically ranges from $202.90 to over $450 per month in 2026, depending entirely on how you structure your coverage. While Medicare is a federal program, it is not entirely free, and you are responsible for monthly premiums, deductibles, and cost-sharing.

Your final monthly cost is determined by choosing between two primary paths: Original Medicare (often paired with supplemental plans) or a Medicare Advantage plan.

Option 1: Original Medicare (Parts A & B) + Supplements

Most beneficiaries choose to add private supplemental coverage to Original Medicare to pay for prescription drugs and cap high out-of-pocket medical costs.

Coverage ComponentAverage Monthly Premium (2026)Key Details
Part A (Hospital Insurance)$0 for most peopleFree if you or your spouse paid Medicare taxes for at least 10 years. Otherwise, it costs up to $565/month.
Part B (Medical Insurance)$202.90 (Standard)Everyone pays this base amount. If your individual income is over $109,000, you will pay a higher surcharge (IRMAA).
Part D (Prescription Drugs)~$34.50 (Average)Offered by private insurers; exact premiums vary depending on the specific plan and medications covered.
Medigap (Supplement Policy)$100 – $220 (Average)Private policies that pay for your 20% out-of-pocket coinsurance and deductibles. Plans like Plan G typically cost $150–$220/month.
Estimated Total Path 1$388 – $458 per monthGives you predictable fixed monthly costs with little to no unexpected medical bills.

Option 2: Medicare Advantage (Part C)

Medicare Advantage plans are bundled, comprehensive alternatives provided by private insurance companies like Humana or UnitedHealthcare. They replace Original Medicare and often include drug, dental, and vision coverage.

  • The Part B Premium: You must still pay the standard $202.90/month to the government.
  • Additional Plan Premium: The average additional plan premium is ~$14/month. However, a vast majority of enrollees choose a $0 premium plan option.
  • Estimated Total Path 2: $202.90 – $220 per month.
  • Note on Out-of-Pocket Costs: While the premium is lower than Option 1, you will pay copays or coinsurance as you visit the doctor, up to a maximum in-network out-of-pocket limit of $9,250 for the year.

Hidden Costs: Deductibles to Keep in Mind

Beyond monthly premiums, you must budget for the initial out-of-pocket amounts you have to pay before insurance kicks in:

  • Part B Annual Deductible: $283/year (Applies to doctor visits and outpatient care under Original Medicare).
  • Part A Hospital Deductible: $1,736 per benefit period (What you pay if you are admitted to the hospital).
  • Part D Drug Deductible: Up to $615/year, depending on your plan. (Note that out-of-pocket spending on Part D prescription drugs is strictly capped at $2,100 for the year).

Detailed personalized rates can be calculated through the official Medicare Plan Finder based on your specific zip code, income, and prescription needs.

What are the four things Medicare doesn't cover?

Original Medicare does not cover four major categories of health needs: routine dental care, eyeglasses and routine eye exams, hearing aids and exams, and long-term (custodial) care.

Key Uncovered Services

  • Routine Dental Care: Original Medicare excludes cleanings, fillings, tooth extractions, root canals, and dentures. It only covers very limited, specific procedures tied to another medical treatment (such as a dental exam before certain organ transplants or jaw reconstruction).
  • Vision Care: Routine eye exams, eyeglasses, and contact lenses are not covered. Medicare does cover medically necessary treatments for specific eye diseases like cataracts or glaucoma, but not the glasses needed afterward.
  • Hearing Care: Routine hearing tests, hearing aid fittings, and hearing aids themselves are excluded from Original Medicare. Diagnostic exams are covered only if ordered by a physician to evaluate a medical problem.
  • Long-Term Care: Custodial care—such as help with daily activities like bathing, dressing, eating, or using the bathroom—is not covered when it is the main kind of care you need. Medicare Part A only covers short-term skilled nursing care after a qualifying hospital stay.

Other common exclusions include care received outside the United States, cosmetic surgery, and routine foot care. You can find comprehensive details on Original Medicare Coverage Exclusions directly from Medicare.gov.

What is the best and most affordable health insurance for seniors?

Kaiser Permanente is the best and most affordable health insurance company overall for seniors aged 60 and older, featuring the lowest average monthly premiums and top customer satisfaction ratings.

Best Options by Category

  • Best Overall & Price: Kaiser Permanente offers the lowest average rates for older adults and high quality of care, though it is limited to specific geographic service areas.
  • Best Runner-Up for Value: UnitedHealthcare provides competitive rates nationwide alongside robust digital tools and extra benefits like $0 primary care visits on select plans.
  • Best for Pre-65 Retirees: Blue Cross Blue Shield offers extensive networks and strong Marketplace plan options through Healthcare.gov for adults who retired before qualifying for Medicare.

Understanding Coverage Types for Seniors

  • Aged 65 and Older: Original Medicare (Parts A and B) paired with a Medigap (supplemental) or Medicare Advantage (Part C) plan is usually the most cost-effective path. Medicare Advantage plans often bundle prescription drugs, vision, and dental.
  • Under Age 65 (Early Retirees): Affordable Care Act (ACA) Marketplace plans provide income-based tax credits and subsidies that significantly lower monthly premiums.

Is it better to go on Medicare or stay on private insurance?

Whether Medicare is better than private insurance depends on your age, employment status, cost, and whether you need to cover dependents. Neither option is universally better; the right choice changes based on your personal health needs and financial situation.

When Private Insurance is Better

  • Covering family: Private insurance allows you to cover a spouse or dependent children, whereas Original Medicare provides individual coverage only.
  • Working at a large company: If you work for a company with 20 or more employees, your employer plan is often cheaper because the employer heavily subsidizes the monthly premium.
  • Out-of-pocket caps: Standard private insurance plans include a maximum out-of-pocket limit, protecting you from catastrophic medical bills, which Original Medicare (Parts A and B) lacks unless you buy a supplement.
  • Health Savings Accounts (HSAs): You can continue contributing to an HSA with private insurance, but you cannot contribute once enrolled in Medicare.

When Medicare is Better

  • Lower costs in retirement: Once you stop working or if your employer's coverage is expensive, Medicare Part A is often premium-free, and overall Medicare costs can be lower than individual Marketplace plans for older adults.
  • Freedom of choice: Original Medicare lets you see any doctor or specialist in the U.S. who accepts Medicare without needing a referral or prior authorization.
  • Small employers: If you work for a company with fewer than 20 employees, Medicare usually becomes your primary payer, making it risky or more expensive to stay solely on the small-group plan.
  • Predictable care for chronic needs: Medicare offers specialized plans (like Special Needs Plans) that can manage chronic conditions effectively.

Key Trade-offs to Remember

  • Original Medicare Gaps: Original Medicare only covers about 80% of outpatient costs and does not include prescription drugs (Part D), dental, vision, or hearing. You often need to add a Medigap supplement or switch to a Medicare Advantage plan to get full protection.
  • Network Restrictions: While Original Medicare has no network limits, private insurance and Medicare Advantage restrict you to specific local doctor and hospital networks.

What is the most popular supplemental insurance for Medicare?

Medicare Supplement (Medigap) Plan G is the most popular supplemental insurance plan for Medicare.

Most Popular Medigap Plans

  • Plan G: Covers nearly all out-of-pocket costs from Original Medicare except the Part B deductible, making it the top choice for new beneficiaries.
  • Plan F: Offers the most comprehensive coverage (including the Part B deductible) but is restricted to people who were eligible for Medicare before January 1, 2020. It is the second-most popular plan.
  • Plan N: Provides lower monthly premiums with small copayments for certain office and emergency room visits, serving as a cost-effective alternative.

Top Insurance Providers

  • AARP by UnitedHealthcare: Widely recognized with nationwide availability and extra perks like SilverSneakers.
  • Mutual of Omaha: Known for competitive long-term pricing and strong financial stability.
  • State Farm: Highly rated for customer satisfaction and low complaint records.