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What is Medicare Part D?

Medicare is a federal health insurance program that provides coverage for adults over the age of 65, as well as younger individuals with certain disabilities. It’s designed to make essential medical care affordable and accessible for these groups.

However, what many people don’t realize immediately is that there are multiple “parts” available in Medicare.

For example, Part D is a specific component of Medicare that provides prescription drug coverage. This can be especially valuable to those with chronic conditions who need regular medications and want to avoid high out-of-pocket costs.

At Senior Insurance Agency, we help clients understand their Part D coverage options and navigate the enrollment process. Let’s take a closer look at how this particular form of insurance coverage works and how to enroll in the Medicare Part D program.


What is Medicare Part D?

Medicare Part D plans are administered by private insurance companies and regulated by the federal government. You must be enrolled entitled to Medicare Part A, or enrolled in a Medicare Part B to be eligible for a standalone prescription drug plan. Medicare Advantage plans usually have built-in coverage Part D, so if you are a Medicare Advantage plan member, your Part D is combined with your Part C plan.

 Note that Original Medicare beneficiaries aren’t automatically enrolled in Medicare Part D. You’ll need to review your plan options and sign up manually.

You’re also eligible for Part D if you are enrolled in both Medicare and Medicaid services. Medicaid beneficiaries are automatically enrolled in Part D coverage and may receive additional financial assistance to cover your prescription drug costs.


How Does Medicare Part D Work?

In short, Medicare Part D coverage helps beneficiaries get the prescription medications they need at reasonable costs. Here’s a look at how the program works.

Types of Drugs Covered

The exact drugs covered by Medicare Part D vary from plan to plan. However, the program generally covers most prescription drugs, including both brand name drugs and generic options. 

In fact, Part D plans are required to cover drugs in certain essential categories, such as anti-cancer drugs, HIV and AIDS treatment, and antidepressants, among others.

Some prescription drugs are excluded from all Part D plans. These include fertility drugs, drugs to address weight loss and weight gain, drugs for erectile dysfunction, and drugs intended for cosmetic purposes.

Preventive Medications 

In addition to standard prescription drugs, Medicare Part D covers a number of drugs that are intended to prevent illness. Most notably, Medicare Part D covers widely recommended vaccines at no cost.

Additionally, Part D limits insulin costs to $35 per month or less for diabetes patients. This can offer substantial savings, considering that out-of-pocket costs for insulin can often exceed $100 per month, depending on the type and dosage required.

Plans and Formularies

There are two different types of Medicare plans that offer prescription drug coverage. The first are stand-alone PDPs, which are available to Original Medicare beneficiaries. The second are Medicare Advantage plans that have built-in prescription drug coverage.

Each plan has a formulary, or list of drugs that are covered under the plan. Formularies will vary between plans and can change from year to year.

Within each formulary, there are drug tiers, which will determine the copayment for each prescription. Common tiers include generic, preferred generic, preferred brand, non-preferred drugs, and specialty, with copay costs typically increasing as you move up in tier. However, exact tiers vary from plan to plan.

Many Part D plans also have containment features to keep costs in check for insurers. For example, many plans require step therapy, which requires patients to try less expensive drugs for their conditions before moving on to a more expensive drug. Some plans also place quantity limits on certain drugs over a specific time period, or they may require prior authorization on certain medications.

Costs Associated With Medicare Part D

Medicare Part D prescription plans come with a number of associated costs for patients. Beneficiaries should consider these costs when selecting a plan to find coverage that is appropriate for their budget, and our team is happy to help you understand them. 

Premiums

Beneficiaries will pay monthly premiums for Part D plans. According to the Centers for Medicare and Medicaid Services, the average monthly premium for Part D in 2024 is $55.50.

Part D premium costs are partially tied to your monthly income. If you are an individual making more than $103,000 annually or a married couple making more than $206,000 annually, you will be required to pay an Income-Related Monthly Adjustment Amount, or IRMAA. This increases your monthly premiums, but the IRMAA adjustment is paid to Medicare through your Medicare bill, so it does not directly increase the premium itself on the plan (rewrite however you feel looks good)

On the other hand, if you have an income up to 150% of the federal poverty level, you could be eligible for lower monthly premiums through the low-income subsidy program.

Deductibles

A deductible is the amount of money you will need to spend annually out-of-pocket on prescription drug costs before insurance kicks in. Deductibles vary by plan, but cannot exceed $545 annually in 2024. After you hit your deductible, you’ll enter the initial coverage phase.

Copays and Coinsurance

Some prescription drugs have copays or coinsurance, which are payments due when the prescription is dispensed. A copay is a fixed dollar amount for the prescription, while coinsurance is a specific percentage of the total drug cost.

Within your plan, copays and coinsurance for each drug will vary by tier, and some drugs have no copays.

Coverage Gap (Donut Hole)

Some Part D plans have a coverage gap phase, or “donut hole”, which temporarily limits your drug coverage. You’ll enter the donut hole once you and your insurer combined have reached the initial coverage limit for the year, which is $5,030 in 2024.

Medicare provides support for beneficiaries during this coverage gap. During this period, you’ll pay no more than 25% of the out-of-pocket cost for both brand-name and generic drugs.

The Affordable Care Act significantly reduced the out-of-pocket costs Medicare beneficiaries pay during the coverage gap. The Inflation Reduction Act will eliminate the coverage gap entirely in 2025.


How to Enroll in Medicare Part D

Signing up for prescription drug coverage is an important part of the Medicare enrollment process. Here’s a look at how to enroll in the program.

Enrollment Periods

There are three enrollment periods for Medicare Part D that beneficiaries should be aware of.

  • Initial enrollment period: This period starts three months before you turn 65 and lasts for seven months. During this period, you can sign up for your first Medicare plan, including standard Part D coverage.
  • Annual enrollment period: This period runs from October 15th to December 7th each year. During this time, you can review new plan options and make changes to your current plan if needed.
  • Special enrollment period: Some beneficiaries may qualify for special enrollment periods if extenuating circumstances prevented them from signing up for a plan during another enrollment period. This could include moving or unexpectedly losing health coverage.

Choosing a Plan

When reviewing Medicare Part D plans, you’ll need to consider a number of different factors to ensure that the plan suits your needs. This starts with considering your current health needs. You’ll want to make sure any prescription drugs you are already taking are covered under your new plan.

Additionally, consider the total costs associated with your plan. While every plan comes with some out-of-pocket costs, some options may be more affordable than others for your specific circumstances.

Finally, evaluate which pharmacies are covered under your plan. If you have a preferred pharmacy, look for a plan that works with that pharmacy.

Keep in mind that plans can change from year to year. Ideally, you should conduct an annual review of your policy so you can make adjustments when coverage changes. A senior services insurance agency can help you with the review process.

How to Enroll in Medicare Part D

Our brokers at Senior Insurance Agency can guide you through the enrollment process and help you navigate current Part D plan options. Medicare brokers do not charge fees to clients, so you’ll get assistance with the enrollment process without any extra costs.

You can also sign up for Medicare Part D online, over the phone, or in-person on your own.


Prescription drugs play an essential role in treating many illnesses and managing chronic conditions. Enrolling in Medicare Part D coverage helps beneficiaries access these prescriptions throughout their later years, without facing significant out-of-pocket expenses.

At Senior Insurance Agency, we help our clients understand their Medicare options and navigate the enrollment process. If you’re interested in learning more about Part D and other Medicare components, check out this blog or get in touch with our team. Our insurance agents in Sparks are here to answer your questions.

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