How to Choose a Medicare Part D Plan

Choosing a Medicare Part D plan starts with understanding your personal prescription needs. The most important factors are your current medications, their dosages, and the pharmacies you prefer.

Because each plan covers drugs differently and may price them in varying tiers, the process can quickly become complex. Many people find it difficult to compare all the options on their own. That’s where SelectQuote comes in. Our licensed insurance agents help simplify the process by guiding you through your choices and helping you find a Part D plan that fits your prescriptions, budget, and coverage needs.

What to Look for in a Medicare Part D Plan

Use this checklist to evaluate whether a plan is the right fit for you:

• Formulary Match: Make sure your prescriptions are included in the plan’s drug list (formulary), including the correct dosage and quantity. If your medications aren’t covered, you could face higher costs.

• Pharmacy Network: Check whether your preferred local pharmacy or mail-order service is included in the plan’s network. Using in-network pharmacies often lowers your out-of-pocket costs.

• Plan Quality: Review the Medicare Part D Star Ratings to understand the plan’s overall quality, customer service, and performance. Higher-rated plans generally indicate better member experience and reliability.

Understanding Costs and 2026 Medicare Part D Changes

Medicare Part D costs are typically made up of three main components:

• Premiums: The monthly amount you pay to maintain your coverage

• Deductibles: The amount you pay before your plan begins to share costs

• Copays/Coinsurance: Your share of prescription costs after meeting your deductible

Coverage Stages (2026 Overview)

• Deductible Phase: You pay 100% of your prescription costs until you meet your plan’s deductible (capped at $615 in 2026).

• Initial Coverage Phase: You typically pay 25% of covered drug costs until your total out-of-pocket spending reaches the $2,100 limit.

• Catastrophic Phase: Once you reach the out-of-pocket cap, you pay $0 for covered Part D drugs for the rest of the calendar year.

The 2027 Out-of-Pocket Maximum Increase ($2,400 Cap)

While the Inflation Reduction Act set a $2,100 out-of-pocket spending cap on covered Part D medications for 2026, official CMS parameters will adjust this threshold to $2,400 for the 2027 plan year.

Why it Matters: If you rely on high-cost brand-name or specialty medications, this could mean a $300 annual increase in your potential out-of-pocket expenses. When evaluating plans during the upcoming Annual Enrollment Period (AEP), beneficiaries taking expensive prescriptions should factor this higher cap into their 2027 health budgets and compare how individual plan formularies structure tier copays prior to reaching catastrophic coverage.

The Part D Coverage Stages

With the elimination of the "donut hole," Medicare Part D follows a simplified three-stage structure:

• Deductible Phase: You pay 100% of your prescription costs until you reach your plan's deductible (capped at $615 in 2026). Some plans feature a $0 deductible on specific drug tiers.

• Initial Coverage Phase: After meeting your deductible, you pay set copays or coinsurance for covered drugs. You remain in this stage until your total out-of-pocket drug spending reaches the federal cap.

• Catastrophic Phase ($0 Cost-Sharing): Once your out-of-pocket payments reach $2,100 in 2026 (or $2,400 in 2027), you move into catastrophic coverage. At this stage, you pay $0 for all covered Part D drugs for the remainder of the calendar year.

Standalone Part D vs. Medicare Advantage (MAPD)

When enrolling in prescription drug coverage, beneficiaries can choose between two primary paths:

• Standalone Part D (PDP): A separate prescription plan that pairs directly with Original Medicare (Part A and Part B) or Original Medicare paired with a Medicare Supplement (Medigap) policy.

• Medicare Advantage Plan with Prescription Drugs (MAPD): A Medicare Advantage (Part C) plan that bundles hospital care (Part A), doctor visits (Part B), and prescription coverage (Part D) into a single plan managed by a private insurance company—often including additional routine benefits like vision, dental, or hearing allowance.

When can you enroll in or switch Part D plans?

You have two primary options to enroll in or change Medicare Part D coverage:

• Medicare Initial Enrollment Period (IEP): A seven-month window before, during, and after your 65th birthday

• Annual Enrollment Period (AEP): This enrollment period runs from October 15 through December 7. During this time, you can review coverage and make changes, including switching Medicare Part D plans.

• Special Enrollment Period (SEP): Occurs if you experience qualifying life events, such as moving out of your plan’s service area, losing employer-sponsored coverage, or qualifying for Extra Help. 

If you choose not to enroll in Part D during your initial enrollment period—and you do not maintain other creditable prescription drug coverage (such as through a qualifying employer plan)—you may face a permanent late enrollment penalty. Calculated as 1% of the national base beneficiary premium for every full month you go without coverage, this fee is added directly to your monthly Part D premium for as long as you maintain Medicare drug coverage. To protect yourself from lifetime surcharges, it is best to enroll in a basic Part D plan when you first become eligible. 

How to Pick a Medicare Plan with SelectQuote

Because Medicare Part D costs, drug tiers, and coverage rules are highly personalized, it’s not something you should guess or navigate alone. Small differences between plans can have a big impact on your yearly out-of-pocket costs.

SelectQuote helps simplify the process by guiding you through your options and comparing plans from multiple carriers. Instead of sorting through the details on your own, you can rely on experienced licensed agents to help identify coverage that aligns with your prescriptions and budget.

Take the next step by comparing Medicare Part D plans for 2026 with SelectQuote and get help finding coverage that fits your needs with confidence.