Medicare Part D Plans

Compare affordable Medicare Part D plans. Let EINSURANCE help you find the best Medicare Part D plans you deserve.

Medicare Part D Plans

Compare Medicare Part D Plans and Prices Online

Medicare Part D is prescription drug coverage. It is not included in Original Medicare (Medicare Parts A & B) but must be bought separately or as part of a Medicare Advantage Plan.

Why Medicare Part D Matters

Prescription drug coverage is a significant healthcare concern for mature adults. This concern can be profound for individuals with medical conditions or a family history of health problems.

Seniors who take prescription medication on a regular basis – or expect to – should consider Medicare Part D an essential piece of their insurance needs. They should also recognize that Part D is not automatically included in Medicare. It comes at an added cost or as part of a Medicare Advantage plan.

Am I Eligible for Medicare Part D?

Medicare Part D is only available to people who are eligible for Traditional Medicare.

Medicare Eligibility

To be eligible for Medicare coverage, one must pay into the program for 40 quarters (ten years) during the 20 years prior to retirement.
Those ten years do not need to be consecutive.
Seniors can enroll in Medicare, Medicare Part D and Medicare Advantage Plans on or around their 65^thbirthday, and at other times during the year.

The Seven Month Enrollment Period for Medicare and Medicare Part D

You must enroll (or be already enrolled) in Medicare to enroll in Medicare Part D. Americans become eligible to enroll in original Medicare and Medicare Part D near their 65^th birthday. The standard enrollment period begins three months before the enrollee’s 65^th birthday, includes their month of birth, and then continues for three more months.

Some adults do not need to enroll for Medicare when they turn 65.

If you have health insurance through your employer (or your spouse’s employer), you can delay Medicare enrollment. This is known as “creditable coverage.”
When you do retire, or when your spouse stops supplying health insurance for another reason, this triggers a Special Enrollment Period (SEP).
Certain other conditions also trigger an SEP. For instance, if you move back to the US after living abroad, but have paid into the program, this will trigger an SEP.

Once you are eligible to enroll in Medicare, you have a choice between Original Medicare (plus Medicare Part D), or a Medicare Advantage Plan (sometimes called Part C).

Medicare Part D Formularies

Every Medicare Part D plan provider must give at least a standard level of drug coverage set by Medicare. Plans can vary though. The list of prescription drugs they cover (called a formulary) is different from one provider to the next.

For instance, antibiotics are a common type of prescription drug. All Medicare Part D providers must cover a few antibiotics. Still, there are over 100 antibiotics available in the US market. The precise medication covered will vary from one insurer to the next.

Every insurer that offers Medicare Part D must provide prospective customers with a copy of their drug formulary. Individuals who have allergies to specific medicines – or other special prescription needs – should read the formulary carefully. Otherwise, they may end up with a Part D plan that doesn’t meet their prescription needs. Once enrolled in a Medicare Part D plan, it can only be changed during certain times of the year.

Changing Medicare Part D: AEP and OEP Explained

There are two times during the year when Medicare enrollees can make changes to their Medicare Part D coverage: the AEP and OEP.

Medicare AEP

Medicare’s Annual Enrollment Period (AEP) occurs every fall. This is the time of year when a Medicare beneficiary can make changes to their plan. It starts on October 15 and continues through December 7.

During Medicare AEP you can:

Add Medicare Part D for the first time
Switch from one Part D plan to another
Cancel Part D coverage
Switch from Original Medicare to a Medicare Advantage Plan
Change from one Medicare Advantage Plan to another

Changes you make to your Medicare during the AEP will go into effect on January 1.

You can also make changes to Medicare Part D during the Open Enrollment Period (OEP). It begins on January 1 and continues through March 31 and will go into effect the first day of the month after you change your plan.

During OEP, you can:

Add or cancel a stand-alone Part D plan
Return to Original Medicare from a Medicare Advantage Plan
Or switch from one Medicare Advantage Plan to another.

A Word About Shopping For Healthcare

Health insurance is a very personal coverage. Since it relates to the specific issues and coverage needed by a given family or individual, it has a detailed health application. As you progress through this site, we will offer a number of solutions to your health care needs. When you have decided on one or maybe two offerings to pursue, you will be transported to that company’s website to complete the application. Keep the following in mind:

Privacy: EINSURANCE.com collects no personal data from you so we remain unbiased in the presentation of possible products. Make sure you pick a partner of ours with good credentials.
Registrations: If you register with us, we are able to keep track of your partner selections to assist you if need be in the future.
Detailed information: In most cases you will receive a phone call or an email to confirm or clarify your shopping process. If you receive too many phone calls or emails, please let us know immediately. Sometimes insurance organization get overzealous in their desire to help.

Find your State-specific Insurance Guidelines

Choose a state:

Frequently Asked Questions (FAQs)

Get clear answers to common insurance questions and important details to guide your coverage decisions.

What is Medicare Part D and who is eligible?

Medicare Part D is prescription drug coverage offered through private insurers approved by Medicare. It’s available to anyone enrolled in Medicare Part A and/or B.

When can I enroll in a Part D plan and what happens if I miss the deadline?

You can enroll during your Initial Enrollment Period or during the Annual Election Period (Oct 15 – Dec 7). Missing these may result in a lifetime penalty unless you have creditable drug coverage.

How do Part D plans work and what types are there?

Part D plans are either standalone Prescription Drug Plans (PDPs) or included in Medicare Advantage Plans (MA-PDs). Each has its own formulary, premium, deductible, and copays.

What factors affect my cost under a Part D plan (premium, deductible, cost-sharing)?

Costs depend on your plan, location, income (which can affect premiums), and whether you’re subject to a late-enrollment penalty. Each plan sets its own pricing structure.

What should I check when comparing Part D plans via EINSURANCE?

Check the formulary to see if your prescriptions are covered, your preferred pharmacy is in-network, the total annual cost estimate, and whether you qualify for Extra Help.

Does my employer or retiree drug coverage count instead of a Part D plan?

Yes. If your employer or retiree plan offers creditable drug coverage, you can delay enrolling in Part D without penalty. You must get documentation each year.

What happens to my coverage if I take chronic or expensive medications?

If you take chronic medications, it’s critical to ensure they’re on the plan’s formulary and to monitor annual changes. New rules cap annual drug costs (e.g., $2,000 in 2025).

Can I switch Part D plans mid-year if my needs change?

Generally, you must wait until the Annual Election Period unless you qualify for a Special Enrollment Period due to a life event or plan changes.

How do I apply for a Part D plan through EINSURANCE and what happens after I enroll?

Enter your ZIP code and drug info on EINSURANCE, compare quotes, and enroll. Your selected insurance company will handle claims and member services post-enrollment.

What are my rights and protections under Part D if I dispute a denial or issue?

You have the right to an internal plan review, external appeals, and state-based help (SHIP). Plans must also provide written explanations and timely responses.