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Cardiology (Heart Care)

​Our heart care experts at Marshfield Clinic Health System use the latest technology and treatments to provide you with world-class care. 

Our team is committed to providing compassionate care that takes into account your needs and your family’s needs. 

We have heart care specialists located throughout our service area, so quality heart care is never too far from home. We have specialists in all areas of heart care, including: 

Interventional cardiology

Timing is important when it comes to your heart. That's why we have an extensive system in place to deal with heart concerns immediately after heart disease is diagnosed.

Interventional cardiology is our first line of defense when treating heart disease, using multiple non-surgical procedures. The doctors who perform these procedures are board-certified cardiologists.

An interventional cardiologist will help you determine which treatments are right for you. Often, if heart disease is caught early, an interventional cardiologist can treat you with lifestyle adjustments or minimally-invasive procedures. 

Most of the procedures don’t require any large incisions, which is why we call them minimally-invasive. 

See how one patient was able to return to doing the things she loves after a minimally-invasive procedure: 

​Find an interventional cardiologist

Types of Interventional Cardiology Procedures

Angioplasty and Stenting

A slender, long tube is inserted into your wrist or leg through a blood vessel and guided to your heart or other areas in your body. The doctor injects a dye through your arteries for guidance while he performs the stenting procedure. 

The catheter has a balloon at the tip which inflates to stretch your artery open and increase blood flow to your heart. A stent (small metal mesh cylinder) is then placed into your vessel so it stays open.


Cardiologists place a burr or rotary shaver at the tip of a catheter and guide it to the affected area to remove plaque that has built up on the walls of your artery. A laser catheter might be used in some cases to vaporize the plaque.

Balloon Angioplasty

A tiny balloon is inserted and inflated into your blocked artery to create space. The plaque is compressed by the balloon against your artery wall to improve your blood flow. The doctor then removes the balloon after the procedure is completed.

Embolic Protection

Occasionally, if the narrowing that is being treated is in your carotid arteries or in a bypass graft, the doctor will use specialized devices such as filters to prevent the plaque from breaking off and traveling in your blood causing damage.

Percutaneous Valve Repair

You have four valves in your heart that control how your blood flows through your heart chambers. Catheters are used to guide devices like clips to your damaged valve through your blood vessels. Doctors then repair your valve so your blood can start flowing properly again using these devices.


Transcatheter aortic valve replacement (TAVR) is a minimally-invasive procedure to replace a poorly working heart valve. TAVR is an alternative to open-heart surgery, which may be too risky for some patients. With TAVR, a catheter carries a new valve through the blood vessels and through the narrowed valve. The stent that houses the new valve then expands into place, and the new valve starts working right away. Learn more about how we are using cutting-edge technology to make TAVR procedures as safe as possible. 


Many heart problems occur due to arrhythmia, an irregular heartbeat caused by "short circuits" in the heart's electrical system. Electrophysiologists are specially-trained cardiologists who diagnose and treat heart arrhythmias. 

Our electrophysiologists can precisely identify electrical problems in the heart, and they have access to the most sophisticated treatments, like advanced pacemaker systems, catheter ablations and implantable defibrillators.

Find an electrophysiologist

Non-invasive heart care

Our heart team includes non-invasive cardiologists. These specialized doctors focus on determining the best medical or surgical treatment available, and they provide follow-up care. Our non-invasive cardiologists have diagnostic capabilities available that are painless and non-invasive.

Diagnostic tests we offer 

Echocardiography. In this test, sound waves directed at your heart from a wand-like device (transducer) held on your chest produce video images of your heart in motion. 

This test assesses the structure of your heart, the heart valves and the blood flow through your heart. An echocardiogram helps your doctor get a close look at the heart valves and how well they're working. Doctors may also use a 3-D echocardiogram.

Doctors may conduct another type of echocardiogram called a transesophageal echocardiogram. In this test, a small transducer attached to the end of a tube is inserted down the tube leading from your mouth to your stomach (esophagus). 

This test allows doctors to have a closer look at the heart valves than is possible with a regular echocardiogram.

Electrocardiogram (ECG). In this test, wires (electrodes) attached to pads on your skin measure electrical impulses from your heart. An ECG can detect enlarged chambers of your heart, heart disease and abnormal heart rhythms.

Chest X-ray. A chest X-ray can help your doctor determine whether the heart is enlarged, which can indicate certain types of heart valve disease. A chest X-ray can also help doctors determine the condition of your lungs.

Cardiac MRI. A cardiac MRI uses magnetic fields and radio waves to create detailed images of your heart. This test may be used to determine the severity of your condition and assess the size and function of your lower heart chambers.

Exercise tests or stress tests. Different exercise tests help measure your activity tolerance and monitor your heart's response to physical exertion. If you are unable to exercise, medications to mimic the effect of exercise on your heart may be used.

Cardiac catheterization. This test isn't often used to diagnose heart valve disease, but it may be used if other tests aren't able to diagnose the condition or to determine its severity.

In this procedure, a doctor threads a thin tube (catheter) through a blood vessel in your arm or groin to an artery in your heart and injects dye through the catheter to make the artery visible on an X-ray. 

This provides your doctor with a detailed picture of your heart arteries and how your heart functions. It can also measure the pressure inside the heart chambers.

Heart surgery

Our cardiovascular surgeons coordinate and perform cardiovascular and thoracic surgery to repair the heart, surrounding vessels and lungs. They coordinate and perform cardiovascular and thoracic surgery in conjunction with other procedures, including:

    •  Aortic aneurysm repair
    •  Coronary Artery Bypass Grafting (CABG)
    •  Heart Valve Surgery
    •  Vascular Surgery
    •  Carotid repair
    •  Esophagectomies
    •  Congenital anomalies which cause patients difficulties later in life

Minimally-invasive care through advanced robotic surgery

With our da Vinci® Xi Surgical System, we perform a variety of procedures in the most precise and minimally invasive fashion including:

    •  Robotic lobectomy
    •  Segmental resection
    •  Pneumonectomy
    •  Lung biopsy
    •  Minimally-invasive surgery
    •  Minimally-invasive bypass surgery
    •  Removal of thymic tumors and mediastinal masses

Find a cardiovascular surgeon

Pediatric cardiology

Our pediatric cardiology team specializes in diagnosing and treating childhood heart conditions. Heart defects cause many childhood heart conditions. 

Our board-certified pediatric cardiologists and cardiovascular surgeons are dedicated to eliminating or limiting the effects of childhood heart conditions on your child’s life.  

Many children born with congenital heart disease need care into adulthood. Our pediatric cardiologists can continue care with these adult patients. 

Find a Pediatric Cardiologist

Heart Failure Improvement Clinic 

Heart failure is a chronic disease in which the heart is unable to pump enough blood to meet the body’s needs. While heart failure is not curable, it is manageable with the right treatment plan. 

Our Heart Failure Improvement Clinic is designed to help you manage your heart failure diagnosis. We will:

    •  Identify and act quickly to meet your needs and avoid unnecessary complications or hospitalizations.
    •  Develop an individualized treatment plan that works for you.
    •  Work to strengthen your relationship with your established doctor and care team.

John Miller is a patient in our Heart Failure Improvement Clinic. We have helped John stay active, engaged with his family and, of course, dancing with his grandchildren. See how our Heart Failure Improvement Clinic got John back in the game: 

Looks like you just met the Heart 2 Heart Kid!

The next important step in your heart health journey is to make an appointment with one of our primary care doctors.

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Contact us for care

Call: 866-520-2510
Monday-Friday 8 a.m. - 5 p.m.

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Appointments with your heart care team may be available via telehealth. Ask your care team if telehealth is right for you.

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Stroke Happens. Protection Works - the safest way to have a TAVR

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Experts at Heart logo

At Marshfield Clinic, our cardiac specialists are upon the leading edge of innovation in their respective areas of  heart care. But heart care is also their passion, the thing that  occupies their hearts and helps define them as people and as doctors. It’s not just what they do—it’s who they are.

Trust your heart or the heart of a loved one to the Experts at Heart at Marshfield Clinic.

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