What is Medicare Part D?

Medicare Part D is optional prescription drug coverage available through private insurers approved by Medicare. It helps pay for outpatient prescription drugs and is available as a standalone plan (PDP) or bundled into a Medicare Advantage plan (MAPD).

What are the 2026 Medicare Part D coverage phases?

In 2026, Medicare Part D has a new $2,000 annual out-of-pocket cap. Once you reach that cap, you pay nothing for covered drugs for the rest of the year. The deductible phase and initial coverage phase still apply before reaching the cap.

A formulary is the list of prescription drugs covered by a Part D plan. Drugs are organized into tiers that determine your cost-sharing. Always check that your medications are on a plan's formulary before enrolling.

When can I enroll in Medicare Part D?

You can enroll during your Initial Enrollment Period (around your 65th birthday), the Annual Enrollment Period (Oct 15 – Dec 7), or a Special Enrollment Period if you qualify. Late enrollment without creditable coverage results in a permanent penalty.

What does Medicare Part D cover?

Medicare Part D covers prescription drugs. Plans are offered by private insurers approved by Medicare and vary by formulary (drug list), pharmacy network, premiums, deductibles, and copays. Each plan has tiers that affect your out-of-pocket cost per drug.

Do I need Medicare Part D if I have Medicare Advantage?

Most Medicare Advantage plans include prescription drug coverage (MAPD plans), so you typically do not need a separate Part D plan. If your Advantage plan does not include drug coverage, you may enroll in a standalone Part D plan.

What is the Medicare Part D coverage gap (donut hole)?

The coverage gap is a temporary limit on what Medicare Part D pays for drugs. In 2025, once you and your plan have spent a certain amount on covered drugs, you enter the gap and pay a higher share until you reach catastrophic coverage. The Inflation Reduction Act has been phasing out the gap.

When can I enroll in Medicare Part D?

You can enroll during your Initial Enrollment Period (around your 65th birthday), the Annual Enrollment Period (October 15 – December 7), or a Special Enrollment Period. Delaying enrollment without creditable drug coverage may result in a late enrollment penalty.

Medicare Prescription Drug Coverage

Find a Medicare Part D plan that fits your prescriptions.

Compare Medicare prescription drug coverage based on your medications, preferred pharmacies, plan costs, and local availability—with help from a licensed Medicare professional.

Prescription-focused review
Pharmacy & formulary guidance
Licensed-agent assistance

Explore Part D Options Check Plans Call 938-247-5552

Start with 3 quick questions

Part D plans are offered by service area, so we begin with a few basics.

Prescription coverage

How Medicare Part D works

Medicare Part D is optional prescription drug coverage offered through Medicare-approved private insurers. Coverage may be purchased as a stand-alone drug plan or included in many Medicare Advantage plans.

List every prescription

Compare plans using your exact medication names, dosages and frequency—not just the monthly premium.

Check the formulary & pharmacies

Drug tiers, preferred pharmacies, prior authorization and other rules can materially affect what you pay.

Review annually

Part D premiums, formularies, pharmacy networks and cost-sharing can change from year to year.

2026 Part D benefit

Three prescription drug coverage phases

The old coverage-gap structure has been eliminated. For 2026, the standard Part D benefit uses a deductible phase, initial coverage phase and catastrophic phase.

Phase 1

Deductible

Up to $700

A plan may have a deductible lower than the 2027 maximum, or no deductible. Where applicable, you generally pay covered drug costs until the plan deductible is met.

Phase 2

Initial Coverage

Cost sharing

After the deductible, the plan and enrollee share costs through applicable copayments or coinsurance until the annual out-of-pocket threshold is reached.

Phase 3

Catastrophic Coverage

$2,400 QOOP cap

Once qualifying out-of-pocket spending on covered Part D drugs reaches $2,400 in 2027, the enrollee pays $0 for covered Part D drugs for the rest of the calendar year.

These figures describe the 2026 federal Part D parameters. Individual plan designs can vary, and not every payment counts toward the annual Part D out-of-pocket threshold.

What to compare

A good Part D comparison starts with your medications

Two plans with similar premiums can produce very different annual costs depending on formulary, tiering and pharmacy choice.

Feature	Why it matters	Question to ask
Formulary	Determines whether a medication is covered	Are all of my drugs on the plan's current formulary?
Drug tier	Can affect copay or coinsurance	What tier is each prescription on?
Preferred pharmacy	Retail costs may vary by pharmacy status	Is my pharmacy preferred or standard?
Mail order	May offer different pricing or convenience	Would a 90-day supply lower my cost?
Utilization rules	Prior authorization, quantity limits or step therapy may apply	Does any drug require special approval?
Premium + total annual cost	The lowest premium is not always the lowest-cost plan overall	What is my estimated total yearly cost?

More 2026 protections

Important Part D features to know

Prescription Payment Plan

Part D plans must offer the Medicare Prescription Payment Plan, which can help spread covered out-of-pocket prescription costs across the calendar year. It changes the timing of payments, not the total amount owed.

Selected drug pricing

Negotiated prices for the first group of Medicare-selected Part D drugs took effect in 2026. How that affects an individual depends on the specific drug and plan.

Avoid late penalties

Going 63 days or more without creditable prescription drug coverage after becoming eligible can result in a Part D late enrollment penalty, unless an exception applies.

Medicare at a glance

Understand the four parts of Medicare

Part A

Hospital insurance for covered inpatient and certain post-hospital services.

Part B

Medical insurance for covered physician, outpatient and other medical services.

Part C

Medicare Advantage: private Medicare-approved plans providing Part A and Part B coverage.

Part D

Prescription drug coverage through a stand-alone PDP or many Medicare Advantage plans.

Want help reviewing your prescriptions?

Speak directly with Prime Time Health & Wealth about Medicare Part D options.

938-247-5552 BobCrane@PrimeTimeHealthandWealth.org

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Common questions

Medicare Part D FAQs

TPMO Disclaimer: We do not offer every plan available in your area. Currently we represent 12 organizations which offer 16 products 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.

Disclaimer

Prime Time Health & Wealth is not connected with or endorsed by the U.S. government or the federal Medicare program. This page is intended for educational and insurance-marketing purposes. Plan availability, formularies, costs and eligibility vary by plan and location.

TPMO Disclaimer: We do not offer every plan available in your area. Currently we represent 12 organizations which offer 16 products 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.

Final Medicare marketing language, privacy language, contact-consent language and carrier-specific requirements should be reviewed and approved for the specific organizations, products, states, advertising channels and lead-generation methods used before publication.

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