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What Is Medicare Part D? Understanding Your Medicare Pharmacy Coverage And Costs

Since Medicare Prescription Drug Plans are products sold by private insurance companies, each company will have different lists of what drugs are covered

What Is Medicare Part D? Understanding Your Medicare Pharmacy Coverage And Costs
Brian Greenberg

Written by Brian Greenberg

CEO / Founder & Licensed Insurance Agent

Last updated: September 2022 | 3 min read

What Is Medicare Part D? Understanding Your Medicare Pharmacy Coverage And Costs at a glance

  • Medicare Part D offers pharmacy coverage not included in Medicare Part A or B.
  • Enrollment is crucial to avoid late penalties; sign up when eligible.
  • Plans vary by insurance companies, affecting drug coverage and costs.
  • Cost-sharing includes deductibles, coinsurance, and copays based on your plan.
  • The 'donut hole' is a coverage gap where you may pay 100% of costs.
  • Consider discussing options with an independent agent for better understanding.
  • Medicare Advantage plans can provide prescription coverage under one policy.

Medicare Part D provides pharmacy coverage that standard Medicare Part A and Medicare Part B plans do not offer.

Medicare Part D is a private, stand-alone policy offered by insurance companies to Medicare enrollees who reside in the Part D plan’s service area. Medicare Part D is not a required coverage but is highly recommended if you need prescription medications on a regular basis. Enrollment into a Medicare Part D plan must be done once you become eligible or you may face a late enrollment penalty from Medicare.

Since Medicare Prescription Drug Plans are products sold by private insurance companies, each company will have different lists of what drugs are covered (formulary) and what the cost-sharing requirement will be, if any. These lists generally will change from time to time, so it is essential to read any documentation you receive from your Medicare Part D insurance carrier and look over your Prescription Drug Plan yearly to ensure it is still the best option for your pharmacy needs. If Medicare Part D your policy changes, your insurance company would send out an Annual Notice of Change every fall for you to review.

Like any private insurance plan, Medicare Part D plans have cost-sharing requirements that are required to be met before the policy to cover the prescriptions at 100%. If the plan has a deductible, it must be satisfied first.

Once the deductible is met, you may have a coinsurance (percentage of contract amount) or a copay (flat rate) depending on how the cost sharing is defined in the actual policy itself. In the event your Maximum Out Of Pocket (MOOP) is met, coverage for your prescriptions under Medicare Part D is covered at 100% (if applicable); otherwise, a Medicare gap, known as a “donut hole”, takes effect.

The biggest draw to Part D policies is that pharmacies bill based on the contracted rate agreed upon by the insurance company and the pharmacy.

How Does Medicare Part D Work?

An epinephrine auto-injector (known by the brand name ”Epipen”) may have different billable rates and are set up based on the formulary which determines what tier they fall. Below is just an example and not representative of actual dollar amounts.

Retail price: $650 (the price you would pay without pharmacy coverage)
Company A’s Part D plan: $376
Company B’s Part D plan: $298
Company C’s Part D plan: $350

Your responsibility may vary based on the insurance carrier you go with for your prescription coverage.

Company A may require a 10% coinsurance ($37.60), Company B may require a flat $50 copay, and Company C may have a 20% coinsurance ($70). Depending on premiums, Company A may be the best choice; however, the more cost sharing you are willing to be responsible for, the lower the premiums will be. In this case, Company C may be the best choice when you look at cost sharing AND premium payout combined.

This is why it is essential to discuss purchasing a Medicare Part D plan with an independent agent how can help you better understand your financial obligations with whatever policies are being offered.

Medicare Part D Alternative

If you decide you would rather opt to have a private insurance version of Medicare, you can locate a Medicare Advantage plan that offers prescription coverage and have all your coverage under one roof. This makes it easier for many who are looking for additional coverage not provided by Medicare Part A and Medicare Part B without having to have multiple policies for the coverage. Medicare Advantage plan providers will offer different plans with different types of non-standard Medicare coverage, so you can expect your premiums to vary based on the type of policy you choose.

Medicare Part D Coverage Gap

The “donut hole” is a Medicare coverage gap that causes a large amount of confusion when talking about Medicare Part D. Currently, Medicare Part D have a yearly limit on how much they will pay on prescription drugs, at which point you may be responsible for 100% of the cost of the drugs up to a certain limit. This coverage gap will eventually close by 2020 based on current federal reforms on health care legislation.

Frequently asked questions

What is Medicare Part D?+

Medicare Part D provides pharmacy coverage that standard Medicare Part A and Part B plans do not offer. It is a private, stand-alone policy offered by insurance companies.

Why is enrollment in Medicare Part D important?+

Enrollment must occur once you become eligible to avoid a late enrollment penalty from Medicare. It is highly recommended if you regularly need prescription medications.

How do Medicare Part D plans differ?+

Each insurance company has different lists of covered drugs, known as formularies, and varying cost-sharing requirements. These lists can change, so review your plan annually.

What are the cost-sharing requirements for Medicare Part D?+

Cost-sharing may include a deductible, coinsurance, or copay. You must satisfy the deductible before the plan covers prescriptions at 100%.

What is the 'donut hole' in Medicare Part D?+

The 'donut hole' is a coverage gap where you may be responsible for 100% of drug costs after reaching a yearly limit. This gap is set to close by 2020.

How can I choose the best Medicare Part D plan?+

Consider factors like premiums and cost-sharing when evaluating plans. Discussing your options with an independent agent can help clarify your financial obligations.

What is an alternative to Medicare Part D?+

You can opt for a Medicare Advantage plan that includes prescription coverage. This consolidates your coverage under one policy, simplifying management.

About the authors

Brian Greenberg

Written by

Brian GreenbergCEO / Founder & Licensed Insurance Agent

Brian is the founder and CEO of Insurancy and carries Life, Health, and Property & Casualty licenses in all 50 U.S. states. Since 2013, Brian has been a member of Million Dollar Round Table, a designation for the top 1% of financial advisors worldwide. Brian has been featured in Yahoo! Finance, Money.com, Entrepreneur.com, Life Happens, Forbes, MSN, and Good Financial Cents. Brian’s goal is to show customers the best products, the quickest answers to their questions, and provide expert advice.

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