Start with what your condition actually costs you

Before you compare plan names and numbers, write down what you actually spend on your chronic condition right now. List every medication you take, how often you see specialists, what tests or imaging you need, and whether you use physical therapy, mental health care, or equipment like a CPAP machine. Then find the price for each one under each plan you are considering — not the plan's advertised premium, but what you will pay out of pocket for the care you actually use.

The plan with the lowest monthly premium is almost never the cheapest plan for someone managing diabetes, heart disease, COPD, or arthritis. A plan that charges $50 more per month but covers your three medications at $5 each instead of $50 each will save you hundreds of dollars a year. Medicare.gov has a tool called the Plan Finder that lets you enter your specific drugs and doctors, and it will show you the real cost for each plan.

Many people skip this step and pick a plan based on what a family member has or what sounds familiar. That choice often costs them thousands of dollars annually in unexpected out-of-pocket costs.

Key Takeaways

  • Enter your actual medications and doctors into Medicare.gov's Plan Finder tool to see what you will pay under each plan, not just the monthly premium.
  • Plans with lower premiums often have higher deductibles and copays, so the cheapest plan to join is rarely the cheapest plan to use.
  • If your condition requires frequent specialist visits or expensive medications, a plan with higher premiums but lower copays and deductibles usually costs less overall.
  • Your prescriptions and doctors may move in and out of a plan's network each year, so you must check coverage every December during open enrollment.
  • If your income is below certain thresholds, you may receive help paying premiums and out-of-pocket costs through programs like Extra Help or Medicaid.

Understand the difference between Original Medicare and Medicare Advantage

Original Medicare (Part A and Part B) is run by the federal government. You pay a monthly premium for Part B, and you can see any doctor or specialist who accepts Medicare anywhere in the country. You pay a deductible, then Medicare covers 80 percent of approved services and you pay 20 percent. For someone with a chronic condition who sees multiple specialists, this predictability can matter — you know the rules will not change mid-year, and you do not have to worry about whether a new specialist is in-network.

Medicare Advantage (Part C) is sold by private insurance companies. These plans bundle Part A, Part B, and usually Part D (prescription drugs) into one plan. They often have lower or zero monthly premiums, but they use networks — you must see doctors in their network or pay more, and you need referrals to see specialists. They also have annual out-of-pocket spending limits, which can protect you if your condition requires expensive care. However, the network and which drugs are covered can change every year.

For chronic conditions, the choice depends on your situation. If you have one main doctor and a few specialists you see regularly, and those doctors are in the Advantage plan's network, Advantage can be cheaper. If you see multiple specialists or travel frequently, or if your doctors are not in the network, Original Medicare plus a Medigap policy (supplemental insurance) may cost less and give you more freedom.

Know what each type of out-of-pocket cost means

Medicare plans use four numbers to describe what you pay: premium, deductible, copay, and coinsurance. Understanding the difference matters when you have a chronic condition, because you will hit all four.

The premium is what you pay every month, whether you use care or not. The deductible is the amount you must pay out of your own pocket before the plan starts to pay. Once you meet the deductible, you then pay either a copay (a flat fee per visit or prescription, like $15 for a doctor visit) or coinsurance (a percentage of the cost, like 20 percent). For someone with a chronic condition who will use care every month, a high deductible means you will pay more early in the year before the plan kicks in.

Original Medicare has no deductible for most services, but it charges 20 percent coinsurance after you meet a small deductible for hospital stays. Medicare Advantage plans vary widely — some have no deductible, others have deductibles of $500 or more. A plan with a $0 premium and a $1,000 deductible will cost you $1,000 out of pocket before it covers anything, which matters if you need medications or doctor visits in January.

Check whether your medications are covered and at what cost

Every Medicare plan has a formulary — a list of medications it covers. Your medications may be on the formulary, but the plan may require you to try a cheaper drug first, or it may charge you a higher copay for your specific drug than for similar ones. Some plans put expensive medications in a tier that costs $100 or more per prescription.

Do not assume your current medications will be covered the same way next year. Plans change their formularies every January. A drug that cost you $10 per month in 2024 might cost $50 in 2025 under the same plan, or it might not be covered at all and you will need to switch to a different drug or switch plans.

Use the Plan Finder tool and enter each medication you take. The tool will show you the copay for each drug under each plan. If a plan does not cover one of your medications, call the plan directly and ask what alternatives they cover and whether you can request an exception. Some plans will cover a drug not on the formulary if your doctor writes a letter explaining why you need that specific medication.

Verify your doctors are in the plan's network

If you choose a Medicare Advantage plan, you must use doctors in that plan's network, or you will pay much more. Before you join, check that your primary care doctor, your specialists, and the hospital or urgent care you use are all in the network. Do not call the doctor's office and ask — use the plan's website or call the plan directly, because doctor's offices often do not know which insurance networks they are in.

Even if your doctor is in the network now, they may leave the network next year. This happens frequently. During the annual open enrollment period in October and November, check again whether your doctors are still in the plan. If your main specialist leaves the network and you want to stay with them, you will need to switch to a different plan or switch to Original Medicare.

For Original Medicare, you can see any doctor who accepts Medicare. There is no network to check. This is one reason people with complex chronic conditions often choose Original Medicare — they do not have to worry about their specialist leaving a network.

Understand prescription drug coverage and the donut hole

Medicare Part D (prescription drug coverage) has a coverage gap called the donut hole. In 2024, you pay your regular copay until your total drug costs reach $5,850. Then you enter the donut hole and pay a higher percentage of drug costs until your out-of-pocket spending reaches $8,550. After that, catastrophic coverage kicks in and you pay only a small copay for the rest of the year.

If you take expensive medications for a chronic condition, you may hit the donut hole. Once you do, your copays jump significantly. Some plans offer better coverage in the donut hole than others. When you compare plans, look not just at the regular copay but also at what you will pay if you enter the donut hole. A plan that charges $15 per prescription in the regular coverage period might charge 25 percent of the drug cost in the donut hole — which could be $100 or more per prescription for an expensive medication.

Extra Help is a federal program that covers Part D premiums and out-of-pocket costs for people with limited income and resources. If you think you might may have access to, contact your State Health Insurance information Program (SHIP) — they can help you determine whether you are may be able to access and help you enroll.

Compare plans during open enrollment, not before

Open enrollment for Medicare runs from October 15 through December 7 each year. This is the only time you can change plans. During this window, you can switch from Original Medicare to Medicare Advantage, from Advantage to Original Medicare, or from one Advantage plan to another. You cannot change plans outside this window unless you have a may have access to life event like moving to a new state, losing employer coverage, or becoming may be able to access for Medicaid.

Plans change their premiums, deductibles, copays, and formularies every January 1. A plan that was cheap and covered your medications well in 2024 might be expensive and drop your medications in 2025. You must check your coverage every year during open enrollment. Set a reminder in October to review your plan using the Plan Finder tool. If a better plan exists for your situation, switch during open enrollment. If your plan is still the best option, you do not have to do anything — you will automatically stay in your current plan.

Many people do not realize they can switch plans every year. They pick a plan once and stay in it for years, even if it no longer fits their needs. This costs them money. Spend 30 minutes in October comparing your options. It is the only time you can make a change.

Frequently Asked Questions

What if my doctor is not in any Medicare Advantage plan's network?

Choose Original Medicare (Part A and Part B) instead. You can see any doctor who accepts Medicare. You will also want to buy a Medigap policy (supplemental insurance) to cover the 20 percent coinsurance that Original Medicare does not pay. Medigap plans have different levels of coverage and different costs depending on where you live.

Can I switch plans if my medication stops working or my doctor recommends a different one?

If you are in a Medicare Advantage plan and your new medication is not covered, you can ask the plan for a formulary exception — a request to cover a drug not on the formulary. Your doctor must submit the request. If the plan denies it, you can appeal or wait until open enrollment in October to switch to a plan that does cover the medication. You cannot switch plans outside open enrollment unless you have a may have access to life event.

How do I know if I may have access to for Extra Help with drug costs?

Extra Help is available to people with limited income and resources. The income and resource limits vary by year. Contact your State Health Insurance information Program (SHIP) to find out whether you may have access to. You can find your state's SHIP by calling 1-800-MEDICARE or visiting Medicare.gov. SHIP staff can help you explore for Extra Help at no cost.

Should I choose the plan with the lowest premium?

No. For someone with a chronic condition, the lowest premium plan is often the most expensive plan overall. A plan with a $0 premium but a $1,500 deductible and high copays will cost you more than a plan with a $50 monthly premium but lower deductibles and copays. Use the Plan Finder tool to calculate your total expected costs under each plan, including premiums, deductibles, copays, and coinsurance.

What happens if I move to a different state?

Medicare plans are state-specific. If you move, your current plan may not be available in your new state. A move is a may have access to life event that lets you switch plans outside open enrollment. Contact your new state's SHIP or call 1-800-MEDICARE to find out what plans are available where you are moving and to switch plans before your move takes effect.