How Medicare drug coverage works
Medicare doesn't directly cover most outpatient prescription drugs. Instead, you enroll in Part D — either as a standalone plan or as part of a Medicare Advantage Prescription Drug plan. Either way, the coverage is administered by a private carrier.
Two ways to get Part D
- Standalone Part D plan (PDP) — added to Original Medicare. You keep Parts A and B (federal) and add a Part D plan from any carrier offering one in Ohio.
- Medicare Advantage Prescription Drug plan (MAPD) — bundled into a Medicare Advantage plan. Most MA plans in Ohio include Part D. You get medical and drug coverage from one carrier.
You can't have both a standalone Part D plan and a Medicare Advantage plan with prescription drug coverage at the same time. The most common pairings: Original Medicare + Medigap + standalone PDP, or Medicare Advantage with drugs included.
2026 Part D structure
| Phase | What you pay |
|---|---|
| Deductible | Up to $615 (plan-set; some plans charge $0) |
| Initial coverage | Plan-set copays/coinsurance for each drug |
| Out-of-pocket cap | $2,100 — once you've spent this, you pay $0 for covered drugs the rest of the year |
The notorious "donut hole" was eliminated in 2025 and remains gone in 2026. The $2,100 cap is a hard ceiling on annual covered-drug spending.
The Medicare Prescription Payment Plan
Every Part D plan is required to offer the Medicare Prescription Payment Plan — an optional way to spread your annual drug costs across monthly payments rather than paying high amounts at the pharmacy counter early in the year. There's no extra fee for participating, and you can opt in or out anytime. Especially useful for people on expensive specialty drugs.
How to pick the right Part D plan in Ohio
The "best" Part D plan is the one that covers your specific medications at the lowest total annual cost. Premiums are only part of the equation — formulary tier and pharmacy network matter more.
- Make a list of every prescription you take. Brand names, dosages, quantities.
- Use Medicare.gov's Plan Finder with your exact drug list. It calculates total annual cost (premium + deductible + copays) for each Part D plan in your Ohio ZIP.
- Check the plan's pharmacy network. Most Part D plans have preferred pharmacies (lower copays) and standard pharmacies (higher copays).
- Check for prior authorization, step therapy, or quantity limits on your drugs.
- Re-shop every year during AEP. Plan formularies, prices, and tier placements change annually.
If your drug costs are high
Two options that can substantially reduce drug costs for limited-income Ohioans:
- Extra Help (Low-Income Subsidy) — federal program covering most or all Part D costs for qualifying low-income beneficiaries. Apply at ssa.gov.
- Manufacturer copay cards and patient assistance programs — but these generally cannot be used with Medicare Part D coverage due to federal anti-kickback rules. Some manufacturers have separate Medicare patient assistance programs.