About me

Dr. Gregory Marcus is a cardiologist and electrophysiologist who specializes in the diagnosis and treatment of arrhythmias, including cardiac mapping and catheter ablation for atrial fibrillation, supraventricular tachycardias and ventricular arrhythmias. He is also an expert in implanting pacemakers, biventricular devices and defibrillators.

In his research, Marcus studies atrial arrhythmias, specifically serologic markers and genetic factors important to the disease. He is the principal investigator on research grants awarded by the National Institutes of Health and American Heart Association.

Marcus earned his medical degree from George Washington University School of Medicine & Health Sciences. He completed his residency at Stanford Medicine. He then completed his training in cardiovascular medicine and cardiovascular electrophysiology at UCSF.

  • Education

    George Washington University School of Medicine, 1998

  • Residencies

    Stanford Hospital and Clinics, Internal Medicine, 2002

    UCSF Medical Center, Cardiology, 2004

  • Fellowships

    UCSF Medical Center, Cardiac Electrophysiology, 2006

  • Academic Title

    Professor

Cardiac Electrophysiology and Arrhythmia Service

400 Parnassus Ave., Fifth Floor
San Francisco, CA 94143

Cardiovascular Genetics Program

535 Mission Bay Blvd. South
San Francisco, CA 94158

Selected research

Decorative Caduceus

Coffee and Real-time Atrial and Ventricular Ectopy

Atrial fibrillation (AF) and heart failure (HF) are morbid, costly, and incompletely understood diseases that have reached epidemic proportions worldwide. A dose-dependent relationship exists between premature atrial...

Recruiting

Decorative Caduceus

Transseptal vs Retrograde Aortic Ventricular Entry to Reduce Systemic Emboli

This study is a prospective, multicenter, randomized (1:1) controlled comparative effectiveness trial of a transseptal approach to left ventricular ablation compared to a retrograde aortic approach to prevent cerebra...

Recruiting

Decorative Caduceus

Individualized Studies of Triggers of Paroxysmal Atrial Fibrillation

The I-STOP-Afib study will test the comparative effectiveness of using N-of-1 trials vs. symptom surveillance alone to reduce Atrial Fibrillation (AF) episode frequency and severity and improve quality of life for AF...

Recruiting

Decorative Caduceus

The HOLIDAY (HOw ALcohol InDuces Atrial TachYarrhythmias) Study

Atrial fibrillation (AF) is the most common sustained arrhythmia in the United States and it has been associated with ethanol use. Understanding how ethanol affects the electrical properties of the heart and induces ...

Recruiting

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