Does Medicare cover an MRI in Peoria, AZ?

Yes. Medicare Part B covers an MRI when a doctor who accepts Medicare orders it to find or treat a medical problem. On Original Medicare you pay the Part B deductible and then 20% of the Medicare-approved amount at an imaging center, or a copayment that can run higher than that at a hospital outpatient department. There is no limit on how many scans Medicare will pay for in a year. Each one has to be ordered for a reason that is written in your chart.

That is the federal rule, and it is the same scan in Peoria as anywhere else. The local part is where the scanner sits. The same knee, same magnet, same radiologist reading it, can cost you a different amount depending on whether the order sends you to an imaging center along Happy Valley Road or Lake Pleasant Parkway, or to the hospital outpatient department at Arrowhead. Vistancia and Trilogy are full of people whose knees, shoulders and lower backs get a lot of use, and the MRI is usually the first big Part B bill they see after the wellness visit.

What Medicare covers

Part B covers diagnostic non-laboratory tests, which is Medicare’s term for the group that includes MRI, CT, PET and nuclear medicine scans. The conditions are short:

• A treating doctor orders it to diagnose a condition, rule one out or decide how to treat it. A scan you ask for without a clinical reason is not covered.
• The provider is enrolled in Medicare. For a hospital that is a given. For a freestanding imaging center, see the accreditation rule below.
• The body part and the reason match Medicare’s coverage rules. Medicare’s national coverage determination for MRI covers the head, spine and central nervous system, soft tissue, joints, blood vessels and most of what an orthopedist or neurologist would order. It excludes imaging of cortical bone and calcifications, which is what a CT or X-ray is for.

Contrast counts as part of the scan. If the order says “with and without contrast,” the dye is covered under the same service and you pay the same share of a larger approved amount.

There is no annual cap. If your orthopedist scans a knee in March and a shoulder in September, Medicare pays for both. What Medicare will not pay for is a repeat of the same scan with nothing new in the record to justify it.

The accreditation rule. Outside a hospital, Medicare pays for an MRI only from a provider that holds advanced-imaging accreditation. Medicare.gov tells you to ask before the test. If the center is not accredited and Medicare refuses the claim, the center is not allowed to bill you for it, but you have still lost the time and will need another appointment somewhere else. The imaging centers in north Peoria that serve Medicare patients are accredited as a matter of course, and the front desk can confirm it in one question.

What it costs on Original Medicare, by setting

Where you have the scan changes what you pay, and it changes it before any supplement or Advantage plan enters the picture.

Source: Medicare.gov, "Diagnostic non-laboratory tests". Dollar figures are the 2026 Part A and Part B deductibles from the CMS fact sheet; the 2027 figures are announced in November.

The hospital row is the one that surprises people. The Medicare-approved amount for the same scan is higher in a hospital outpatient department than in a freestanding center, and the hospital bills a copayment rather than a flat 20%. Medicare.gov’s Procedure Price Lookup shows the two side by side for any scan code, and for most MRI codes the patient’s share at the hospital is roughly double the share at an imaging center.

So when the order is written, ask one question: can this be done at an imaging center? For a routine knee, shoulder, spine or brain MRI the answer is usually yes. The hospital is the right place when the scan is urgent, when it needs sedation or a specialized magnet, or when the radiologist needs to be the one your surgeon works with.

What changes with a Medicare Supplement

A supplement pays the part Medicare leaves to you, so the setting matters much less.

• Plan G pays the 20% and the hospital outpatient copayment once you have met the Part B deductible. After that, an MRI costs you nothing, wherever it is done.
• Plan N does the same. Its copay of up to $20 applies to some office visits, and the scan itself is not an office visit, so you should not see a copay for the MRI. The one gap is Part B excess charges, which Plan N does not cover and Arizona allows. A radiology group that does not accept Medicare assignment can bill up to 15% above the approved amount, and that part would be yours. Ask whether the center accepts assignment. Most do.

I compared the two plans in Plan G vs Plan N in Arizona. For an MRI the difference between them comes down to that assignment question and nothing else. What neither plan does is overrule Medicare. If Medicare denies a scan as not medically necessary, the supplement pays nothing on it either.

What changes with a Medicare Advantage plan

A Medicare Advantage plan must cover every MRI Original Medicare would cover. Four things work differently, and in Peoria each one has a local edge.

1. A copay instead of a percentage. Most plans charge a flat amount per advanced imaging scan. Many charge less at a freestanding imaging center than at a hospital outpatient department, so the same question about setting still applies, and the plan’s Evidence of Coverage spells out both numbers.
2. Prior authorization. Nearly every Advantage plan requires approval in advance for some services, and advanced imaging is one of the most common. The order goes from your doctor’s office to the plan before the scan is scheduled. A denial can be appealed, and an appeal with the doctor’s notes attached succeeds more often than people expect. The practical cost is time, which is a problem when the knee hurts now.
3. A referral. In an HMO you may also need your primary care doctor to refer you to the specialist who orders the scan. I walked through that in Do I need a referral with Medicare Advantage in Peoria?
4. The network. An HMO pays for the scan only at an imaging provider in its network. A PPO pays out of network at a higher cost to you. In north Peoria, where most specialist care means a drive to Arrowhead or into Sun City, the imaging center your orthopedist prefers may belong to one plan’s network and not another’s. The networks explainer covers how to check.

Two Peoria patterns come up every fall. People who moved into Vistancia or the 85383 corridor recently and kept an Advantage plan from another state find that the plan’s network is back there, and a routine MRI here is out of network or not covered at all. And people in Trilogy or Westbrook Village who spend summers out of state find that an Arizona plan’s imaging benefit stays in Arizona. Original Medicare with a supplement pays for a covered scan from any enrolled provider in the country.

Prior authorization on Original Medicare, and the Arizona pilot

Original Medicare does not require prior authorization for an MRI. Your doctor orders it, the center schedules it, Medicare pays its share.

One Arizona note, because it has caused confusion in offices here. Arizona is one of six states in a CMS pilot that began in January 2026 and applies prior authorization to a short list of services under Original Medicare. The list is specific procedures: certain implanted nerve stimulators, epidural steroid injections for pain, cervical fusion, vertebral augmentation for compression fractures and arthroscopic debridement of an osteoarthritic knee, among a few others. Imaging is not on it. If an office tells you your MRI needs approval and you are on Original Medicare, the office is confusing the pilot with a Medicare Advantage rule, or you are not on the plan you think you are. Check your card.

If you have a pacemaker or other implant

Medicare’s coverage rule lists a conventional pacemaker and ferromagnetic clips as reasons not to scan, and for years an MRI was simply off the table for pacemaker patients. That changed. Medicare covers MRI for people with a pacemaker or defibrillator that is approved for use in an MRI environment, when the device is used according to its FDA labeling. The imaging center will need the make and model of the device and will usually coordinate with your cardiologist’s office to set it to the right mode before and after the scan.

The same conversation covers joint replacements, stents, aneurysm clips and anything else metal. None of those is automatically a problem, and all of them need to be declared before the appointment is made, not when you are filling in the form in the waiting room.

What to ask before you book

Five questions, in order, settle most of the cost before the scan happens:

• Who ordered it, and why? The order needs to come from a treating doctor and name the condition. That is what makes it a covered scan.
• Can it be done at an imaging center? If yes, your share on Original Medicare is roughly half what it would be at the hospital, and most Advantage plans charge a lower copay there too.
• Is the center accredited for advanced imaging? One question at the desk.
• If you have an Advantage plan, has the approval come through, and is the center in network? Do not let the scan be scheduled until both answers are yes.
• Will the office hand you an Advance Beneficiary Notice? If the provider expects Medicare to deny the scan, you may be asked to sign one accepting the charge. Read it and ask what the denial reason would be before you sign.

What to check before December 7

Open enrollment for 2027 runs October 15 through December 7, and if you have an Advantage plan the Annual Notice of Change is in your mailbox now. If a scan or two a year is a normal part of your life, look at three lines before the plan renews itself:

• the 2027 copay for advanced imaging, at a freestanding center and at a hospital outpatient department
• whether prior authorization still applies to imaging
• whether the imaging center and the specialist who sends you there are still in the network for 2027

If you are on Original Medicare with a supplement, nothing in your MRI coverage changes in January except the deductible amount, and that is announced in November.

The short version

• Medicare covers an MRI a doctor orders to find or treat a medical problem, with no yearly limit on scans.
• At an imaging center you pay the Part B deductible, $283 in 2026, then 20%. At a hospital outpatient department the copayment can be more than that.
• Plan G and Plan N pay that share, so the setting stops mattering to your wallet once the deductible is met.
• An Advantage plan charges a copay, usually needs approval first and keeps you in its network. The copay is often lower at a freestanding center.
• Original Medicare needs no prior authorization for an MRI, and the Arizona pilot that started in January 2026 does not cover imaging.

If you would rather have someone check it for you

Bring your insurance cards, the scan order if you have one, and the Annual Notice of Change if you have an Advantage plan. It takes about fifteen minutes to see what your plan pays for the scan at each setting and whether another option in your ZIP would treat it differently. There is no charge for the conversation. I am not a doctor, and whether you need the scan is a question for the physician who ordered it. What I can tell you is what your coverage will pay for, and where.

I work with people across Peoria, from Vistancia to Westbrook Village. The office is in Anthem, roughly 25 minutes from north Peoria out the Carefree Highway and down Lake Pleasant Parkway, and most of this gets done by phone. Call (602) 844-6002 or book a time — and if you call or text, that is your consent for me to reply the same way.