7 Mistakes To Avoid When Switching Your Medicare Advantage Plan

Updated on January 22nd, 2021

Reviewed by Louise Norris

We aim to help you make informed healthcare decisions. While this post may contain links to lead generation forms, this won’t influence our writing. We follow strict editorial standards to give you the most accurate and unbiased information.

If you’re thinking of switching your Medicare Advantage plan (also known as Medicare Part C), you’re probably looking for things like lower prices on prescriptions, smaller monthly insurance premiums, and access to a greater number of doctors.

Changing plans may bring up challenges, however. To address some of your concerns, we’ve talked with licensed Medicare agents, who see seven common errors that seniors make when switching Medicare Advantage plans.

Understanding these initial Part C mistakes will help make you comfortable switching Medicare Advantage plans on your own.

Common Problems from Having the Wrong Medicare Advantage Plan

Staying on a plan that serves you poorly can cause a number of issues, like:

  • Being stuck on the phone with unmotivated customer service,
  • Overpaying each year for prescriptions by $500 to $1,000, or more,
  • Your doctors not accepting the plan you choose,
  • Your total costs, including premiums, deductibles, copays, and coinsurance, being higher than they need to be.

Above all, not knowing how to compare plans can leave you indecisive and afraid to switch to a better plan. What a shame!

Mistake #1 – Not Understanding the Difference Between an HMO and a PPO

There are several types of Medicare Advantage plans, but most people who enroll in one will choose either an HMO or a PPO.

HMO (Health Maintenance Organization) plans are generally lower in cost, and sometimes even sport a $0/month premium.  (Remember, however, that Medicare Advantage enrollees still have to pay the Part B premium, even if they have a $0 premium Advantage plan.) An HMO generally also has lower doctor copayments than a PPO. But, an HMO will typically have a finite network of doctors for you to see. Go outside the network and your insurance will not pay the bill, with limited exceptions.

Can you benefit from a plan switch?

Review Medicare Advantage plans and look for savings.

A PPO (Preferred Provider Organization) plan will generally cost you a little more in premiums than an HMO and have slightly higher copayments. However, it will include out-of-network coverage. That gives you a greater choice of doctors, which is important if you travel often or have many specialists to see.

Mistake #2 – Choosing a Plan That Has Poor Coverage for Your Prescriptions

matrix drug hands | switching Part C Part D prices | HealthCare.com

Most Medicare Advantage plans include Medicare Part D prescription drug coverage – but not all Part D coverage is the same. This is an expensive mistake.

By far the biggest difference among Medicare Advantage plans with Part D is the price you’ll pay for your prescriptions. Each plan has its own formulary (a list of prescriptions) that it covers. That’s why the prices of individual prescription drugs vary widely among plans.

Part D differences are one reason why the best plan for your spouse, neighbor or friend probably won’t be the best plan for you. Even among different Medicare Advantage + Part D plans offered by the same insurance company, copayments on prescriptions can vary widely.

Thankfully, it’s very easy to choose between plans by comparing their prescription drug prices. After you go through the comparison once or twice, it becomes straightforward. Afterwards, it’s a simple matter to repeat the process each year.

Why would you want to compare every year? To save money, of course. Drug prices, plan benefits, and your own prescription needs may change, and you want to make sure you always have the best plan for your particular prescriptions.

Mistake #3 – Choosing a Plan With a Painfully Small Number of Doctors

Some Medicare Advantage plans – particularly HMOs –  have “closed” networks. That means that your insurer will only pay the medical professionals that are part of their network, and won’t pay for you to see anyone else. Of course, some HMOs are so huge that they have thousands of doctors signed up who take their insurance, especially around large metropolitan areas.

If you like the idea of a small monthly premium — or in many cases, no premium, though you still have to pay for Part B — the chances are good that you can find enough doctors you’ll like among the hundreds who take your HMO plan in a big city.

Before you enroll in any plan, look at its list of in-network doctors on the insurance company’s website. If you have doctors that you want to stay with, and you want an HMO, first make sure they are listed on that insurance company’s website as “in-network”.

Here, you can see the appeal of a Medicare Advantage PPO. In addition to its in-network doctors, PPOs let you see doctors outside the network. Ask the doctor’s office in advance if they take your particular plan. If they are out-of-network, ask the doctor to bill your insurance company or you can seek reimbursement from the Medicare Advantage plan, at the out-of-network level, as long as the doctor hasn’t opted out completely. PPO out-of-network coverage gives you access to a greater number of doctors, although you might have to spend a little more on out-of-network copayments.

Mistake #4 – Not Understanding Your Right to Switch Plans

Many seniors seem to needlessly fear that their chronic health problems will prevent them from switching to a better Medicare Advantage plan. Not true. You can change Medicare Advantage plans from October 15 through December 7 each year without answering a single health question. This is called an Annual Election Period. 

You can also switch to a different plan or switch to original Medicare during the Medicare Advantage Open Enrollment Period (January 1 through March 31), though only one plan change is allowed during this window. Through 2020, there is one exception to both these options — people on dialysis are unable to enroll in a different plan — but that is changing in 2021 and even those on dialysis will be able to switch plans. 

Now you know why you receive so many advertisements during the Annual Enrollment Period. Every Medicare Advantage company wants you!

Why do insurers want you if you have a lot of health problems? Simple. The more chronic health issues you have, the more money the government gives your Medicare Advantage insurer to take care of you. It’s only fair.

Mistake #5 – Using the Wrong Criteria to Make a Purchase Decision

Sure, your friends will tell you how great their Medicare plan is. But your prescriptions are not the ones they take, and their doctors are not yours. So, their plan will not typically be the best one for you.

Besides…maybe they don’t have the best plan for their circumstances anyway?

Mistake #6 – Not Knowing That You Have the Right to Use Your Health Insurance as Much as You Need

The government pays your Medicare Advantage provider a set amount each year to treat your health needs. The more chronic ailments you have, the more your plan receives to care for your health. The monthly premium you pay is a token charge — it’s actually unrelated to your health.

This is a big point. People who suffer major health problems, like a heart attack or a stroke, can become afraid to change their insurance. They might fear their monthly premium will go up. Not true.

Considering a Medicare Plan?

Review options now.

Can you benefit from a plan switch?

Review Medicare Advantage plans and look for savings.

On that same note, it’s in your insurer’s best financial interest to give you all the testing and treatments you need to get healthy and to stay out of the hospital. Hospital bills are huge and eat into their profits more than tests and treatments would. So, use your insurance to get healthy and to stay healthy. That’s what everyone wants.

Mistake #7 – Insufficient Travel Benefits

This mistake comes up at the worst possible times. Suppose you travel to a friend or relative’s home, stay for several weeks, and get sick. That would be a bad moment to learn your insurance does not cover many doctors in that area (or even has no network of doctors there). Not good.

If you have an HMO, you can call your insurer before traveling and ask for a list of its doctors in that area. Typically, HMO coverage is best near major cities.

Being able to travel and still have coverage is one of the strengths of Medicare Advantage PPO plans over Medicare Advantage HMOs. To get paid by your PPO plan, the only requirement is that your doctors can’t have opted out of Medicare completely. The doctor does not have to be signed up as a member of your PPO’s network to get paid. You will likely, however, pay higher out-of-network cost-sharing, including deductibles, copayment, and coinsurance.


It’s easy to join Medicare Advantage (Medicare Part C) plans, whether you are new to Medicare or just want to find better coverage. In large metropolitan areas there are usually numerous Medicare Advantage plans to compare, each with their own advertising claims. Don’t worry – choosing the best Medicare coverage for your particular needs can be confusing but keep these tips in mind and you will have an easier time making a decision. 

Share this article