Home
Medicare
Question
What is Medicare Part D?

What is Medicare Part D?

Plans Types
Last updated: 
April 10, 2026
Smiling elderly couple on medicare coverage sitting outdoors in a grassy hilly area, dressed warmly with scarves and jackets.
Smiling elderly man with pre existing conditions is grateful for medicare insurance and woman enjoying tea together indoors with plants in the background.
Older couple smiling wondering about their drug formulary and dancing outdoors among green trees, enjoying a healthy aging lifestyle.

The short answer

Medicare Part D is prescription drug coverage. It is offered through private insurance companies approved by Medicare and helps pay for the medications you take at home.

The full explanation

Original Medicare, Parts A and B, was designed around hospital and doctor services. It generally does not cover the prescriptions you pick up at a pharmacy. Part D was added in 2006 to fill that gap.Part D plans are sold by private insurers and vary quite a bit. Each plan has a formulary, which is just the list of drugs it covers and at what cost. One plan might cover your blood pressure medication at a low copay. Another might place it in a higher tier, costing you significantly more. That is why comparing plans based on your specific medications matters more than comparing premiums alone.If you have a Medicare Advantage plan that includes drug coverage, you are already enrolled in Part D and do not need a separate plan. If you have Original Medicare or a Medigap policy, you would typically add a standalone Part D plan.Missing your initial enrollment window can cost you. If you go without creditable drug coverage (coverage at least as good as Part D) for 63 or more days after you are first eligible, you may owe a late enrollment penalty added to your monthly premium for as long as you have Part D. The penalty is calculated based on how long you went without coverage, so it is worth enrolling on time even if you take few medications right now.

Smiling elderly couple on social security benefits misunderstand medicare advantage are outdoors with man presenting a bouquet of yellow flowers to the woman.Smiling elderly couple disappointed at their doctor for not accepting medicare sitting on a bench outdoors holding a colorful bouquet of flowers.A group of six older adults enjoy discussion with primary care physician covered by medicare sitting together indoors, smiling and enjoying conversation with drinks.

In 

Utah

 specifically

Part D plans available in Utah are offered through many of the same carriers as Medicare Advantage, including UHC, Humana, Aetna, Wellcare, and others. Plan availability varies by zip code, and the formularies and pharmacy networks differ across plans. The Medicare Plan Finder at medicare.gov lets you enter your specific medications to compare actual costs across available Utah plans.

Two elderly men in a nursing home paid for by medicare sitting at a wooden table outdoors, one showing the other something on a tablet, with drinks on the table.

What this means for you

For you, this means the monthly premium is not the only number that matters. Running your actual prescriptions through a plan comparison tool could save you hundreds of dollars a year.

Related Questions

How do Part D formularies and drug tiers work?

What is catastrophic coverage in Part D?

What is the Part D late enrollment penalty and how is it calculated?

Do Medicare Advantage plans include drug coverage?

Is Part D included in Original Medicare?

Still have questions about Medicare?

Book a review with a licensed Medicare advisor.

Review My Drug Costs
Senior couple sitting together outdoors near white flowers and greenery, smiling and looking to the right.

Medicare Advantage Plans in 

Heading

 County 

Loading Pennsylvania Medicare plans...

Loading Ohio Medicare plans...

Loading Utah Medicare plans...

Decision area Tool What it answers
Enrollment Initial Enrollment Period Calculator When your 7-month Medicare eligibility window begins and ends based on your 65th birthday
Enrollment When Should I Sign Up for Medicare? The best time to enroll based on your work status, other coverage, and age
Enrollment Special Enrollment Period Checker Whether a life event qualifies you for enrollment outside the standard windows
Enrollment Late Enrollment Penalty Checker How much extra you'll pay monthly if you missed your enrollment window
Enrollment Part B Penalty Calculator The exact 10%-per-year premium increase for delayed Part B enrollment
Enrollment Part D Penalty Calculator The 1%-per-month premium increase for gaps in creditable drug coverage
Costs Cost Scenario Planner Estimated annual spending across plan types at different health utilization levels
Costs Advantage vs. Medigap Cost Comparison True cost difference between Medicare Advantage and Original Medicare with Medigap
Costs IRMAA Calculator Whether your income triggers higher Part B and Part D premiums
Costs Part A Premium Estimator Your monthly Part A premium based on work history and quarters of coverage
Costs M3P Calculator How the Medicare Prescription Payment Plan smooths your drug costs into monthly payments
Coverage Doctor & Drug Assessment Whether your providers and prescriptions are covered by a specific plan
Coverage Part D Shopping Tool Which Part D plan has the lowest total annual cost for your specific medications
Coverage Travel & Network Risk Assessment How your coverage works outside your home area and which plan types travel best
Employer/COBRA COBRA vs. Medicare Why COBRA can trigger permanent Medicare penalties and how costs compare
Employer/COBRA Employer Coverage vs. Medicare Whether your employer plan or Medicare is primary and when to transition
Employer/COBRA HSA & Medicare Compatibility How Medicare enrollment affects HSA eligibility and what to do before enrolling
Planning Caregiver Readiness Checklist Whether you have everything in place to help a loved one with Medicare decisions
Planning Document Gatherer Which documents you need to have ready before enrolling or changing plans
Planning Medigap Fit Assessment Whether Medigap or Medicare Advantage is the better fit for how you use healthcare
Planning Medigap Open Enrollment Window Whether you're inside your one-time guaranteed issue window for Medigap
Planning Medicare Savings Program Eligibility Whether your income qualifies you for help paying Medicare premiums and cost-sharing

‍CMS TPMO Compliance Disclaimer: We do not offer every plan available in your area. Please contact Medicare.gov, 1-800-MEDICARE, or your local State Health Insurance Program (SHIP) to get information on all of your options.

Participating sales agencies represent Medicare Advantage [HMO, PPO, PFFS, and PDP] organizations that are contracted with Medicare. Enrollment depends on the plan’s contract renewal.

Not Government Affiliated: Resting Sycamore Advisors is a licensed Medicare insurance agency. We are not affiliated with or endorsed by the U.S. government or the federal Medicare program.

‍Data & Methodology for Research Articles: All provider, facility, quality star ratings, and enrollment data is sourced from primary CMS records (cms.gov), including the December 2025 CPSC Enrollment files and the January 2026 Provider Data Catalog. Calculations for patient-to-provider ratios are performed using indexed clinician and facility data. Everything on restingsycamore.com is for educational purposes and does not constitute an endorsement of any specific plan or provider.

Non-CMS Data Sources: Some  specific data was obtained from https://opendata.gov