CGAP Our Team

Physicians and staff of the Comprehensive Genetic Arrhythmia Program (CGAP) are drawn from several different departments of the School of Medicine and provide a broad range of expertise in both clinical and research activities. CGAP team members are currently drawn from the:

  • Cardiac Electrophysiology and Arrhythmia Clinic

  • Cardiology Division


Dr Scheinman

Melvin Scheinman, MD
Chief of CGAP Clinic
Professor of Medicine, Walter H. Shorenstein Endowed Chair in Cardiology, UCSF

Melvin Scheinman heads the CGAP Clinic, is Professor of Medicine, Walter H. Shorenstein Endowed Chair in Cardiology, and is one of the founding fathers of the field of cardiac electrophysiology. Dr. Scheinman has a long-standing interest in genetic arrhythmia syndromes and has published extensively on this topic. His current interests are new gene discovery and mechanisms of cardiac rhythm disorders.

Dr abraham

Roselle Abraham, MD
Associate Professor of Medicine, UCSF

Roselle Abraham is a cardiologist who cares for patients with hypertrophic cardiomyopathy (HCM). Her background is in diagnostic imaging, stem cell research, and electrophysiology. She uses various medical imaging technologies to help determine a patient's risk of heart rhythm disorders, with the goal of customizing therapies for individuals with HCM.

Dr Liviu Klein

Liviu Klein, MD, MS
Associate Professor of Medicine, UCSF

Liviu Klein is a cardiologist and director of the Mechanical Circulatory Support Program for patients with advanced heart failure. He specializes in caring for patients with heart failure and arrhythmias, including care before and after surgery for those receiving heart transplants. In his research, Klein studies the epidemiology of heart failure in women, including those at risk for sudden cardiac death. 

Jeffrey Olgin

Jeffrey Olgin, MD
Chief of the Division of Cardiology
Co-director of the Heart and Vascular Center
Professor of Medicine, UCSF

Jeffrey Olgin is a cardiologist and a cardiac electrophysiologist. A specialist in arrhythmias, he has developed techniques to treat irregular heartbeats. He founded UCSF's atrial arrhythmia clinic. His main clinical interests include conduction disorders, arrhythmias, catheter ablation, implantable devices—pacemakers and defibrillators, atrial fibrillation, atrial flutter, ventricular tachycardia, sudden death and supraventricular tachycardia.

Dr Nelson Schiller

Nelson B. Schiller, MD, FACC
Professor of Medicine, UCSF

Nelson B. Schiller is a cardiologist who specializes in the use of echocardiography in the diagnosis and treatment of heart disease. He is the founder of the UCSF Echocardiography Laboratory and the UCSF Adult Congenital Heart Disease Clinic. He has played an integral role in the development of many diagnostic and treatment techniques including two-dimensional echocardiography, transesophageal echocardiography, Doppler pulmonary pressure determination, myocardial contrast perfusion, and echocardiography phase imaging for ventricular coordination. His main clinical interests include the treatment of mitral and aortic valve diseases, hypertrophic cardiomyopathy and congenital heart diseases.

Dr Geoff Tison

Geoff Tison, MD, MPH
Assistant Professor of Medicine, UCSF

Geoff Tison is a cardiologist specializing in preventive cardiology. He has particular expertise in advanced echocardiography, including transesophageal echocardiography. In his research, Tison uses advanced machine learning algorithms and digital health technologies to further research on cardiovascular disease prevention. 

Dr Vedantham

Vasanth Vedantham, MD, PhD
Associate Professor of Medicine, UCSF

Vasanth Vedantham is a cardiologist and clinical cardiac electrophysiologist, specializing in the treatment of heart rhythm disorders using catheter ablation, pacemaker, and defibrillator implantation, and antiarrhythmic medications. In addition to treating patients with supraventricular tachycardia, ventricular tachycardia, atrial fibrillation, conduction system disease, cardiac arrest, and syncope, he is particularly interested in inherited arrhythmia syndromes (including long QT syndrome, Brugada syndrome, CPVT, and others) as well as inherited and acquired arrhythmogenic cardiomyopathies, especially cardiac sarcoidosis.

Other Program Staff 

Julianne Wojciak

Julianne Wojciak, MS, LGC
Lead Genetic Counselor and Director, Cardiovascular Genetics Program, UCSF

Julianne Wojciak is a genetic counselor whose main clinical experience includes oncologic and cardiovascular genetics. She currently directs and supervises the UCSF Cardiovascular Genetics program and provided integrated genetics care for patients and families with hereditary conditions affecting the heart and blood vessels. She is also involved in several research studies aimed to prevent sudden cardiac death through increased awareness, personalized risk assessment, and appropriate cardiac care.