How to Sign Up for Medicare Part D (GUIDE) | GoMedigap

How to Sign Up for Medicare Part D (Updated for 2018)

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How to sign up for Medicare Part D

Medicare Part D (Medicare Drug Plans)

We understand that enrolling in Medicare Part D can be intimidating and confusing. Don’t worry, GoMedigap is here to help. We have put together a step-by-step guide on how to find, compare, and enroll in the best Part D plan for you.

This guide will help those who are searching for a Part D plan for the first time, as well as those who are reviewing their Part D plan before Annual Open Enrollment (AEP).

Please keep in mind that the new plans for the upcoming year are not usually available to view online until October 1st, and you will be able to sign up for a new RX plan on October 15.

We recommend for everyone to review their Part D coverage every year since Part D plans often change benefits each year. Even if your medication needs do not change, your existing plan can, and often does, change each year so it’s possible to save money on a different plan.

How to Enroll in Medicare Part D (Step-by-step Guide)

Visit the Medicare Plan Finder

  1. Visit to access the Medicare Plan Finder.
    • Before you get started, it is helpful to have the following information ready:
        • Medicare card, zip code, list of prescription drugs (including dosage and amount), and the pharmacies you use.
        • Enter your zip code and click the “Continue”  button when you are done with this step.
        • After entering your zip code, read the section on the tool. It describes that this process will only take about 5-10 minutes. Make sure you have your current medications and your preferred pharmacy handy. Once you finish this step, click “Get Started.”
        • Enter your drugs on the next page. Type the first four letters of your medication in the boxes provided.
        • Once you type in your medication, find it among the generated list. When you see your drug, click “Select Drug.”
        • Next, you will need to provide more information about the drug you’re taking. Indicate your dosage, the quantity per month, and if you’d like to choose the generic or brand version. After this step is done, click “Add Drug” to add this drug to your list.
        • This will lead you to the calculation page. Here, you can add more drugs if you are taking any more. If not, click “Select Pharmacy” to choose your local pharmacy to give you more accurate results. Once you’re done choosing your pharmacy, click “Back to Plans” to show the plans available to you.
        • Here, you will see your available plans. You can filter them by carrier if you wish. Notice the monthly premium and the estimated monthly cost (boxed in red). This is the cost you can expect to pay each month with this plan. To make sure you are getting the best plan for you, we recommend you compare plans. You can do so by selecting the “Compare” box in the top right corner of each plan.

        • On this page, you will see your plan comparisons side by side. Take a minute to consider each plan. If you know which plan you would like to join, click the orange “Enroll” button below each plan. You can also contact the plan you are interested in to ask questions or enroll in the plan. Once you click enroll, click “Continue” to complete the enrollment process.

If you would like help entering your prescriptions into the Prescription Drug Plan Finder tool, please call us at (800) 310-2550! A GoMedigap agent would be glad to help you use the tool to determine which plan makes the most sense for you, free of charge as always!

 To download a printable PDF of this how-to guide, please click the image below.

Guide to Enrolling in Part D

How to Sign Up for Medicare Part D by GoMedigap

Please note the only way to obtain a Part D policy is through Medicare. Enroll by calling 1-800-MEDICARE (1-800-633-4227) or online at

Compare Your Medicare Supplement Rates Immediately!

5 Replies to “How to Sign Up for Medicare Part D (Updated for 2018)”

  1. Wonderful website. You have done a great service by showing exactly how an individual can get to the RX plan on, and find the plans to compare for themselves. The only thing I think that might help is to inform them that the monthly rates will not be updated until Oct. 15. If they look before then they may not get the plan rate for 2017.

    1. Hi Valerie,

      Thank you so much for your comment– so glad you are enjoying our site. Your suggestion is very helpful. Part D monthly rates will be updated in the Medicare Plan Finder by October 1, and you can sign up for a new RX plan on October 15. I have added these dates into the blog post. Thanks again for your suggestion!

  2. I will be 65 in November and start Medicare on November 1st (now it’s August). Currently I have drug coverage through a Marketplace (Obamacare) Heath insurance plan, which will end at the end of October (10/31/2018), and with it ends my drug coverage.

    Plan D prices (what I read here) for next year won’t be available before October 1, and I can’t enroll in Part D before October 15.
    And If I understand correctly, all new drug overage starts in January (not this year in November or when I sign up).

    My question is…. What must I do to get Plan D that starts on November 1st and not in January? Is this even possible, or am I stuck without any drug coverage in November and December?

    Help, please? Thank you!

    1. Hi Ingrid,

      Thank you for your question. Good news: if it is your first time signing up for Medicare Part D, you can do so during your Initial Enrollment Period (IEP). This period starts 3 months before you turn 65, and lasts until 3 months after you turn 65. Since it is currently August and you turn 65 in November, it sounds like you are currently in your IEP.

      If you sign up for Part D during the first 3 months of your IEP, your Part D coverage will start the first day of the month you turn 65.

      I hope this helps! If you need further assistance signing up for your Part D plan or if you have any additional questions, one of our friendly agents will be more than happy to assist you. One can be reached at (800) 310-2550. Have a great day!

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