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Cardiac Arrhythmia Services

Abnormal heart rhythms, also known as cardiac arrhythmias, occur when the electrical impulses that keep your heart beating steadily go awry. They can be alarming to experience.

Arrhythmias are usually harmless, though some can be life-threatening. They also are common, affecting millions of Americans.

The cardiac arrhythmia specialists at UCI Health have access to one of the most advanced electrophysiology labs in Orange County, which can help pinpoint why your heart isn't beating normally. Armed with this information, our world-class cardiologists are able to develop a treatment plan that fits your unique needs.

For patients who suffer from debilitating atrial fibrillations, a type of irregular heart beat commonly known as AFib or AF, we also offer the Watchman device, an implant that can help close an appendage to the heart where blood clots can form. Learn more about our Watchman implant services ›

We see patients at UCI Medical Center in Orange, at UCI Health Gottschalk Medical Plaza on the university campus in Irvine and UCI Health — Tustin

To make an appointment, please call 714-456-6699.


Arrhythmias can be a challenge to diagnose, especially when their symptoms appear sporadically. Some tests you may be given to diagnose your condition include:


When you have been diagnosed with cardiac arrhythmia, our caring team of cardiologists has access to state-of-the-art technology to treat your condition. Treatments we offer include:


Our skilled cardiac arrhythmia team is led by David M. Donaldson, MD, director of electrophysiology. The team also includes Michael Rochon-Duck, MD.

All our UCI Health cardiologists collaborate closely to care for you.

The cardiology team includes vascular, endovascular, cardiothoracic surgeons, nurse practitioners, nurses, dietitians and exercise physiologists. We are all dedicated solely to improving your heart health.

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