Medicare Guide

Medicare and Medicaid

Medicare and Medicaid can work together, but they are not the same program and they do not work the same way in every state. Some people have full Medicaid. Some have help only with Medicare premiums or cost sharing. Some qualify for a Medicare Advantage plan designed for people with both programs. The words sound simple; the details decide what happens at the doctor, pharmacy, and billing desk.

Reviewed by Calvin Bagley, Licensed Insurance Agent since 2011 · Published May 15, 2026 · Last updated August 14, 2026

Quick answer

People who qualify for both Medicare and Medicaid are often called dual eligible.

For Medicare-covered services, Medicare generally pays first and Medicaid pays last, after Medicare and any other health insurance. Medicaid may help with premiums, deductibles, coinsurance, copays, long-term services, personal care, or other benefits, but the exact help depends on state rules and the person's Medicaid category.

Key takeaways

People with both Medicare and Medicaid are often called dual eligible.
Medicare generally pays first for Medicare-covered services; Medicaid usually pays last.
Full-benefit Medicaid can help with Part B premiums and may help with Medicare cost sharing, depending on the person's eligibility level.
Medicare Savings Programs can help with Part A and Part B costs even when someone does not have full Medicaid.
People with full-benefit Medicaid automatically get Extra Help with Medicare Part D drug costs.
D-SNPs (Dual Eligible Special Needs Plans) and PACE may help coordinate care, but availability and rules vary by location.
State Medicaid rules, provider participation, notices, and plan details should be reviewed before changing coverage.

Dual eligibility snapshot

Medicaid can lower costs, but the category matters

The important question is not only whether someone has Medicaid. It is what type of Medicaid help they have, which costs it pays, which providers accept it, and whether a coordinated Medicare plan would improve or complicate their care.

Medicare role

Pays firstFor Medicare-covered services, Medicare is generally the primary payer.

Medicaid role

Pays lastFor Medicare-covered services, Medicaid generally pays after Medicare and other insurance.

Part B premium

May be paidFull-benefit Medicaid and some Medicare Savings Programs may help pay the Part B premium.

Extra Help

AutomaticPeople with full-benefit Medicaid automatically get Extra Help with Medicare drug costs.

Plan options

LocalD-SNP and PACE availability varies by state and county.

The parts of Medicare

Start with the four Medicare parts

These are the core building blocks. Once you understand what each part does, the plan choices start to make more sense.

Part AHospital coverage

Inpatient hospital care, skilled nursing facility care, hospice, and some home health care.

Read morePart BMedical coverage

Doctor visits, outpatient care, preventive services, durable medical equipment, and many medical services.

Read morePart CMedicare Advantage

A private-plan way to receive Medicare benefits, with rules and availability that vary by county and plan.

Read morePart DDrug coverage

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

Read more

What dual eligibility means

Dual eligibility means a person has Medicare and also qualifies for Medicaid. Medicare is federal health insurance for people who meet Medicare eligibility rules. Medicaid is a joint federal and state program for certain people with limited income and resources. Because Medicaid is run through states, the exact benefits and eligibility categories can differ by state.

Who pays first

Medicare.gov says Medicare pays first when a dual eligible person receives Medicare-covered services. Medicaid pays last, after Medicare and any other health insurance. That order matters because a provider, pharmacy, or plan may need the right Medicare and Medicaid information before the claim can process correctly.

What Medicaid may help pay

For people with full-benefit Medicaid, the state pays the Part B premium. Depending on the level of Medicaid, the state may also help with Medicare deductibles, coinsurance, copays, Part A premiums if someone has to pay for Part A, and services Medicare does not cover. Medicare.gov also notes that Medicaid may cover benefits not normally covered by Medicare, such as nursing home care and personal care services.

Full Medicaid is different from partial help

Not every person who gets Medicaid-related help has the same benefits. Someone may have full Medicaid, or they may qualify for a Medicare Savings Program that helps with Medicare premiums and sometimes cost sharing. QMB, SLMB, QI, and QDWI are not all the same. This is why a notice or Medicaid card needs to be read carefully instead of assuming every dual-eligible person has identical coverage.

Medicare Savings Programs

Medicare Savings Programs are state programs that can help pay Medicare Part A and Part B costs. The QMB program can help with Part A and Part B premiums and Medicare cost sharing. SLMB and QI generally help with Part B premiums. Medicare.gov says people should still apply even if they are not sure they qualify, because some states use higher limits or count income and resources differently.

Drug coverage and Extra Help

If someone is dual eligible, Medicare covers prescription drugs through Medicare Part D rather than Medicaid for most covered prescriptions. Medicare.gov says dual eligible people are automatically enrolled in a Medicare drug plan if they do not already have one. Full-benefit Medicaid also brings automatic Extra Help, which can lower Part D premiums, deductibles, and copays.

What happens when Medicare does not cover a drug

Medicare.gov says that if Medicare does not cover a prescription for a dual eligible person, Medicaid may still cover it in certain situations. That is not a reason to skip Part D review. It means the medication list, formulary, pharmacy, Extra Help status, and any Medicaid backup need to be checked together.

Dual Eligible Special Needs Plans

Some Medicare Advantage plans are designed for people who have both Medicare and Medicaid. These are often called Dual Eligible Special Needs Plans, or D-SNPs. They include Medicare drug coverage and may help coordinate Medicare and Medicaid benefits. Some integrated D-SNPs combine Medicare benefits and most or all Medicaid benefits through one plan, but not every D-SNP is integrated.

D-SNPs still need plan review

A D-SNP can be helpful, but it is still a health plan with rules. Doctors, hospitals, pharmacies, prescriptions, service area, referrals, prior authorization, transportation, dental benefits, care coordination, and Medicaid category should all be checked. A plan that works beautifully for one dual-eligible person may not fit another person in the same county.

Original Medicare is still an option

Medicare.gov says dual eligible people can still choose how they get Medicare coverage: Original Medicare or Medicare Advantage. Original Medicare may be paired with Medicaid support and Part D. Medicare Advantage may offer a D-SNP or another local plan. The choice should be based on care access, prescriptions, Medicaid benefits, and local provider fit.

State rules and notices matter

Medicaid eligibility, benefits, provider rules, and managed-care arrangements vary by state. People should keep Medicaid notices, Medicare notices, Extra Help letters, plan letters, and renewal paperwork. A small change in Medicaid category can affect premiums, copays, drug costs, enrollment windows, or eligibility for a coordinated plan.

What to review before changing plans

Before changing coverage, confirm Medicare Part A and Part B status, Medicaid category, Extra Help level, prescriptions, pharmacies, doctors, specialists, hospitals, transportation needs, long-term care needs, current notices, and whether a D-SNP or other plan is actually available in the county. With dual eligibility, the details are the decision.

Coverage paths

The two big Medicare paths people usually compare

The right answer is not the same for everyone. The better question is which path fits the way you use care.

Full Medicaid

Full-benefit Medicaid may help with Medicare premiums, cost sharing, long-term services, personal care, and other state benefits. Medicare still generally pays first for Medicare-covered care.

Extra Help Medicare Costs Explained Special Enrollment Periods

Medicare Savings Programs

Some people do not have full Medicaid but still qualify for state help with Part A or Part B premiums, deductibles, coinsurance, or copays through a Medicare Savings Program.

Medicare Costs Explained Medicare Part B Extra Help

Coordinated plans

Some Medicare Advantage plans are designed for people with Medicare and Medicaid. These plans can help coordinate benefits, but doctors, prescriptions, Medicaid category, and county availability still need review.

Medicare Advantage Types of Medicare Advantage Plans Medicare Advantage vs Medicare Supplement

Go deeper

Related Medicare guides

Use this page as your Medicare starting point, then jump into the specific topic that matches your situation.

Common questions

Questions people usually ask next

These answers are a starting point. Medicare details can change based on timing, other coverage, and where you live.

Can someone have Medicare and Medicaid at the same time?

Yes. People who qualify for both programs are often called dual eligible.

Does Medicaid replace Medicare?

Usually no. Medicare generally pays first for Medicare-covered services. Medicaid may help after Medicare pays and may cover certain services Medicare does not cover, depending on state rules.

Are Medicare and Medicaid rules the same in every state?

No. Medicare is federal, but Medicaid rules and benefits can vary by state.

Do people with Medicaid get Extra Help?

People with full-benefit Medicaid automatically get Extra Help with Medicare Part D drug costs.

What is a D-SNP?

A D-SNP is a Dual Eligible Special Needs Plan, a type of Medicare Advantage plan for people who have both Medicare and Medicaid. It may help coordinate benefits, but doctors, prescriptions, and Medicaid details still need review.

Is QMB the same as full Medicaid?

Not always. QMB is a Medicare Savings Program that can help with Part A and Part B premiums and Medicare cost sharing. Some people have QMB plus full Medicaid, while others have more limited help.

Can Medicaid help with long-term care?

Medicaid may help with services Medicare usually does not cover, including nursing home care and personal care services, but eligibility and benefits depend on state rules.

Can The Medicare Store help review Medicare and Medicaid options?

Yes. We can help review Medicare status, Medicaid category, Extra Help, prescriptions, doctors, pharmacies, and local plan options so the coverage works together.

Official references

Sources checked for this guide

These guides are written in plain English, but the 2026 cost figures and coverage rules should stay tied to official Medicare and CMS source material.

Medicare.gov: Medicaid and Medicare CMS: Medicare-Medicaid general information Medicare.gov: Who pays first?Medicare.gov: Help with drug costs Medicare.gov: Special Enrollment Periods Medicare.gov: Medicare Savings Programs Medicare.gov: Understanding Medicare Advantage Plans

About the reviewer

Calvin Bagley · Licensed Insurance Agent since 2011 · Nevada license #820948

Calvin Bagley is the founder and president of The Medicare Store and has been a licensed insurance agent since 2011 (Nevada license #820948). He built The Medicare Store around free, unhurried Medicare guidance from local agents, and still works with clients and agents across every Medicare Store market.

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