This tool is for education and planning. It does not replace Medicare.gov, Social Security, SHIP, legal advice, tax advice, or a plan-specific coverage check.
Key takeaway: Before you pick any Medicare plan, check whether your actual doctors are in-network and your actual medications are on the formulary — because a plan with a low premium can end up costing you thousands more per year if your doctor is out-of-network or your drug is on the wrong tier.
What this helps you decide
- Whether your current primary care doctor, specialists, and other providers are in-network for the Medicare Advantage plan you're considering
- Whether your prescriptions are covered under a plan's formulary, and at what cost tier — Tier 1 generics and Tier 4 specialty drugs can be hundreds of dollars apart per month
- Whether Original Medicare plus a standalone Part D plan might give you better access to the specific doctors and drugs you rely on
- Which plan type — MA-HMO, MA-PPO, or Original Medicare with Medigap — is the best fit given your specific healthcare needs today
Who this is for
- Someone who has seen the same primary care doctor and specialists for years and is not willing to switch to new providers just to save on a monthly premium
- A person managing a chronic condition — diabetes, heart disease, cancer, COPD — who takes brand-name or specialty medications and needs to know the real annual drug cost before enrolling
- Anyone during Medicare's Annual Enrollment Period (October 15 – December 7) who is considering switching plans and wants to verify the new plan covers their care before making the change
- A new Medicare enrollee who currently has employer coverage and needs to understand whether their existing care team will still be available under Medicare
Example results
Example 1 — Primary care in-network, specialist out-of-network. Medicare plan networks, drug coverage, and costs can change each year. Before you enroll, check your doctors, prescriptions, pharmacies, and current plan documents. Your primary care doctor is in the network — so far, so good. But your cardiologist, who you've been seeing for three years, is not. With an MA-HMO plan, you can't see out-of-network providers except for emergencies. That means you either find a new cardiologist in the plan's network or you pay the full bill yourself. Medicare plan networks, drug coverage, and costs can change each year. Before you enroll, check your doctors, prescriptions, pharmacies, and current plan documents. That's the hidden cost of not checking the provider directory before you enroll.
Example 2 — Same drug, two very different costs. You take Eliquis, a brand-name blood thinner. It doesn't have a generic equivalent, so you're stuck with the brand. Medicare plan networks, drug coverage, and costs can change each year. Before you enroll, check your doctors, prescriptions, pharmacies, and current plan documents. Same drug. Same 30-day supply. Medicare plan networks, drug coverage, and costs can change each year. Before you enroll, check your doctors, prescriptions, pharmacies, and current plan documents. The plan premium comparison made Plan A look slightly cheaper. But it wasn't, not for you.
Example 3 — A clean match across the board. You have three doctors: a primary care physician, a rheumatologist, and a dermatologist. You take five medications: two generics for blood pressure, one generic for cholesterol, one low-cost brand for thyroid, and one over-the-counter supplement. You run every provider through the plan's directory and every drug through the formulary. All three doctors are in-network. Medicare plan networks, drug coverage, and costs can change each year. Before you enroll, check your doctors, prescriptions, pharmacies, and current plan documents. This is a strong coverage match. Your out-of-pocket risk is low, your care team stays intact, and the plan's monthly costs are predictable. This is exactly the outcome you want from this assessment before enrolling.
Sample scenarios
| Scenario | Doctor/Drug Status | Estimated Impact |
|---|---|---|
| MA-HMO: specialist out-of-network | PCP in-network, cardiologist NOT in-network | $400–$1,200/yr in uncovered specialist costs or forced provider change |
| Brand-name drug: tier placement difference | Eliquis on Tier 4 vs. Tier 3 across two plans | Medicare plan networks, drug coverage, and costs can change each year. Before you enroll, check your doctors, prescriptions, pharmacies, and current plan documents. |
| All doctors and drugs: full coverage match | 3 providers in-network, 5 drugs on Tier 1–2 | Low out-of-pocket risk; plan costs are predictable and well-matched |
| Original Medicare + Medigap: no network restriction | All Medicare-accepting providers covered nationwide | No network access concerns; drug costs managed via standalone Part D plan |
What to do next
- Make a list of every provider you see. Write down your primary care doctor, every specialist, your preferred hospital, and any lab or imaging center you use regularly. Then look up each one in the plan's online provider directory — don't assume, check.
- Pull your current prescription list. Get the exact drug names (brand and generic), dosages, and how often you fill them. Then search each drug in the plan's formulary. Note the tier for each drug and the cost-sharing at that tier. Do this for every plan you're seriously considering.
- Compare total annual drug cost, not just the monthly premium. Add up what you'd actually pay per year under each plan: (monthly premium × 12) plus your estimated copays for all your medications. Medicare plan networks, drug coverage, and costs can change each year. Before you enroll, check your doctors, prescriptions, pharmacies, and current plan documents.
- If any doctor or drug is a dealbreaker, filter first. Before comparing premiums, costs, or benefits, eliminate any plan that doesn't cover your must-have doctors or medications. Start with coverage, then compare costs among the plans that clear that bar.
Key facts
- A plan's formulary determines what drugs are covered and at what cost tier — the same brand-name medication can cost two to three times more on a Tier 4 specialty listing than on a Tier 3 preferred brand listing, with no difference in the drug itself.
- Provider networks change annually — a doctor or specialist who is in-network this year may not be in-network next year, which is why checking coverage at every Annual Enrollment Period matters even if you've been on the same plan for years.
- Checking coverage before enrolling prevents the most common and costly Medicare mistakes — choosing a plan based on premium alone without verifying provider and drug coverage is the single biggest source of unexpected out-of-pocket spending for Medicare enrollees.