Gregory Maurice Marcus MD MAS FACC FAHA FHRS

Cardiac Electrophysiology, Interventional Cardiology, Non-Invasive Cardiology

Professor of Medicine in Residence, UCSF School of Medicine; Associate Chief of Cardiology for Research, UCSF Health; Endowed Professor of Atrial Fibrillation Research, UCSF

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505 Parnassus AveSan Francisco, CA 94143
Phone+1 415-353-8870
Fax+1 415-476-4150

Education & Training

University of California (San Francisco)Fellowship, Clinical Cardiac Electrophysiology, 2005 - 2006
University of California (San Francisco)Fellowship, Cardiovascular Disease, 2002 - 2005
Stanford Health Care-Sponsored Stanford UniversityResidency, Internal Medicine, 1998 - 2001
George Washington University School of Medicine and Health SciencesClass of 1998

Certifications & Licensure

CA State Medical License 1999 - 2026
American Board of Internal Medicine Clinical Cardiac Electrophysiology

Awards, Honors, & Recognition

Member Association of University Cardiologists, 2022
Member American Society of Clinical Investigation, 2022
Fellow Heart Rhythm Society, 2011
Fellow American Heart Association, 2010
CMS Meaningful Use Stage 1 Certification EpicCare Ambulatory EMR, Epic Systems Corporation, 2012-2013
Super Doctor SuperDoctors.com
Fellow (FACC) American College of Cardiology
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Clinical Trials

Transseptal Needle Versus Radiofrequency Energy for Left Atrial Access Start of enrollment: 2010 Nov 01
Completed
Not Applicable
Vest Prevention of Early Sudden Death Trial and VEST Registry Start of enrollment: 2008 Jul 01
Completed
Not Applicable
Study of Left Atrial Appendage Closure in Patients With Atrial Fibrillation - III Start of enrollment: 2012 Sep 01
Withdrawn
Phase 4
The HOLIDAY (HOw ALcohol InDuces Atrial TachYarrhythmias) Study Start of enrollment: 2012 Sep 01
Completed
Not Applicable
Individualized Studies of Triggers of Paroxysmal Atrial Fibrillation Start of enrollment: 2019 Mar 20
Completed
Not Applicable
Coffee and Real-time Atrial and Ventricular Ectopy Start of enrollment: 2019 May 01
Completed
Not Applicable
Transseptal vs Retrograde Aortic Ventricular Entry to Reduce Systemic Emboli Start of enrollment: 2019 Jul 02
Completed
Not Applicable
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Publications & Presentations

PubMed

Left Ventricular Entry to Reduce Brain Lesions During Catheter Ablation: A Randomized Trial.
Gregory M Marcus, Roderick Tung, Edward P Gerstenfeld, Trisha F Hue, Feng Lin
Circulation. 2025-04-15
Can We Prevent Cardiac Conduction Disease?
Adi Elias, Gregory M Marcus
European Journal of Preventive Cardiology. 2025-04-09
The "420" Cannabis Celebration and Atrial Fibrillation.
Jean Jacques Noubiap, Gregory M Marcus
Circulation. Arrhythmia and Electrophysiology. 2025-04-03

Journal Articles

Surface ECG and Intracardiac Spectral Measures Predict Atrial Fibrillation Recurrence After Catheter Ablation
Byron Lee, Nitish Badhwar, Vasanth Vedantham, Tomos E Walters, Randall Lee, Edward P Gerstenfeld, Gregory M Marcus, Journal of Cardiovascular Electrophysiology

Press Mentions

Can I Drink Wine if I Have Myocarditis Related to COVID-19 Vaccination or Infection?November 20th, 2024
What the Headlines Get Wrong About Alcohol and HealthNovember 11th, 2024
Coffee Could Be More Than a Morning Pick-Me-Up, It May Also Boost Heart Health — New Study FindsOctober 7th, 2024
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Grant Support

Digital Interventions to Study and Influence the Alcohol-Atrial Fibrillation ConnectionUNIVERSITY OF CALIFORNIA, SAN FRANCISCO2024–2029
Applying Digital Health to the AF Ablation NCDR, Enabling Longitudinal Follow-upUNIVERSITY OF CALIFORNIA, SAN FRANCISCO2021–2026