5 Medicare Enrollment Issues to Avoid, at All Costs

Medicare beneficiaries should look for plans that cover their prescription drugs at a price they can afford, and that include their preferred doctors, facilities, and hospitals in the network.
Published: 4/29/2026, 2:36:59 PM EDT
5 Medicare Enrollment Issues to Avoid, at All Costs
A health care worker prepares a measles, mumps, rubella (MMR) vaccine in Lubbock, Texas, on March 1, 2025. (Jan Sonnenmair/Getty Images)

Many Americans don’t have a clear grasp on Medicare, with some mistakenly considering the government-funded health care program as a "plug and play" issue.

That’s a big mistake, health care experts say.

"Medicare doesn’t just ‘turn on’ at 65 - one missed enrollment window, one wrong assumption about employer coverage, or one piece of paperwork you can’t produce can saddle you with higher premiums and coverage gaps for years, sometimes for life,” Paul Barrett, principal agent at Modern Medicare Agency, told NTD News.

Plan confusion leads the list of Medicare consumers' cost woes.

“Most Medicare beneficiaries (75 percent) say choosing coverage is confusing, given the various plan options available to Americans once they become eligible,” Whitney Stidom, vice president of consumer enablement at eHealth, told NTD News. “New enrollees are expected to quickly understand whether their doctors are in network, how much they might pay out of pocket for medical care, and the differences between Original Medicare, Medicare Advantage, Medicare Supplement, and Medicare Part D plans.”

To make matters more complicated, in most parts of the country, beneficiaries can choose from over 40 Medicare Advantage plans, multiple Part D prescription drug plans, and various Medicare Supplement options. “Each plan can differ in care provider networks, drug coverage, premiums, cost-sharing, and supplemental benefits, such as dental or hearing care,” Stidom noted. “Add strict enrollment windows and frequently changing rules, and the Medicare enrollment process can quickly become overwhelming, even for savvy consumers.”

It’s up to Medicare recipients, ideally working with health care specialists, to figure out how to properly enroll in the program at age 65. Taking these strategic measures should help avoid making Medicare mistakes and put you on a path to an optimal health care experience with Medicare.

Missing your initial enrollment period

Assuming Medicare “just starts” at 65 can backfire, because missing the 7-month Initial Enrollment Period can lock in delays and penalties. “Without qualifying employer coverage, late enrollment often means waiting for a narrow window to get back in,” Barrett said.

Missing the initial enrollment period can force you into the general enrollment period (Jan. 1–March 31), with coverage typically starting the first day of the month after you enroll, which can still leave a significant gap in protection, Barrett noted.

To bypass that scenario, treat the 7-month Initial Enrollment Period as a hard deadline, not a suggestion. “If working past 65, confirm in writing that employer coverage qualifies before delaying Part B,” he added.

Delaying Part B without qualifying coverage

Delaying Medicare Part B only works cleanly when employer coverage qualifies under Medicare rules, yet many people rely on HR guidance that misses key details. “Once the employer plan doesn’t qualify, the clock keeps running, and the penalty keeps stacking,” Barrett said.

The cost issue can be prohibitive. “Part B late-enrollment penalty adds 10% to the monthly premium for each full 12-month period you were eligible but didn’t sign up (SSA),” Barrett noted. “That extra cost stays for as long as Part B stays in place, turning a short delay into a permanent surcharge.”

To protect yourself, get clear confirmation that current employer coverage counts as qualifying coverage for delaying Part B before opting out. “When employment ends, use the special enrollment period promptly rather than drifting into a penalty,” Barrett advises.

Don’t choose a Medicare program based on the premium alone

Don’t fall for the "price only" plan option, as it can be misleading.

“A $0 premium Advantage plan may look attractive, but if it comes with high co-pays for doctor visits or if your prescriptions aren't fully covered, you could end up spending far more over the course of the year,” Gabrielle Juliano-Villani, a licensed clinical social worker and Medicare consulting specialist, told NTD.

Not checking your doctors and drugs is part and parcel with Medicare pricing issues.

“Not all plans cover your preferred doctors, hospitals, or medications, which can lead to costly out-of-network charges,” Juliano-Villani noted.

Misunderstanding Medicare Advantage trade-offs

Medicare Advantage plans can be attractive because they bundle coverage into a single plan, but they come with network restrictions. “Here, you must use in-network providers for most services if it's an HMO, and prior authorization requirements that can delay care,” Juliano-Villani said.

Here’s how to pick the best Medicare plan for you

There is no single Medicare plan that’s best for everyone, because everyone has different medical needs, priorities, and finances. “People also have several ways to access Medicare plan coverage, spanning Medicare Advantage, Medicare Supplement, and Part D plans,” Stidom said. “With so many choices, it’s not surprising a recent eHealth survey found 75 percent of Medicare beneficiaries say shopping for coverage is confusing.”

To find the best program match, Medicare beneficiaries should look for plans that cover their prescription drugs at a price they can afford, and that include their preferred doctors, facilities, and hospitals in the network. “People should also make sure they understand the out-of-pocket costs for any new plan they select,” Stidom noted. “The monthly premiums may look great, but if people are faced with serious medical expenses and can’t afford the deductibles, copays, and coinsurance under their new Medicare plan coverage, it may not be the best option for them.”

Technology can be a big help with the Medicare program selection process. For instance, eHealth uses AI-driven tools to help beneficiaries evaluate plans based on their preferred doctors, prescriptions, chronic conditions, and financial considerations.

“Rather than focusing only on monthly premiums, these technologies can estimate total potential out-of-pocket costs, identify network limitations, and surface options that better align with an individual’s health care needs,” Stidom added. “For most people, conducting this level of analysis on their own would be unrealistic.”

The views and opinions expressed are those of the interviewees. They are meant for general informational purposes only and should not be construed or interpreted as a recommendation or solicitation. NTD does not provide investment, tax, legal, financial planning, estate planning, or any other personal finance advice. NTD holds no liability for the accuracy or timeliness of the information provided.