The Team


Designed for researchers, by researchers.

Jeffrey E. Olgin, MD

Professor of Medicine & Chief of Cardiology, University of California San Francisco

Dr. Olgin is a practicing cardiologist and cardiovascular researcher. He has been involved in leading clinical trials and clinical research for over 20 years. He is one of the Principal Investigator of the Health eHeart Study and one of the creators and Principal Investigator of the Eureka Research Platform.

Mark J. Pletcher, MD, MPH

Professor of Epidemiology and Biostatistics & Director of Informatics and Research Innovation, UCSF

Dr. Pletcher’s research focuses on prevention of cardiovascular disease, how exposure to cardiovascular risk factors like blood pressure and cholesterol during young adulthood may contribute to heart disease later in life, and how to use emerging technology to improve health.

Gregory M. Marcus, MD, MAS

Professor of Medicine & Associate Chief of Research for Cardiology, University of California San Francisco

Dr. Marcus is a practicing cardiac electrophysiologist and cardiovascular researcher. His research interests include investigating causes and optimal treatments for abnormal heart rhythms, prevention of stroke, and the influences of common exposures (such as alcohol, caffeine and tobacco exposure) on health.

Alexis Beatty, MD, MAS

Associate Professor, Epidemiology & Biostatistics, University of California San Francisco

Alexis Beatty, MD, MAS is a cardiologist and health services researcher who studies innovative delivery models for cardiovascular disease care. She received a career development award from the Department of Veterans Affairs to develop and test a mobile application to improve participation in cardiac rehabilitation, called VA FitHeart. She worked for Apple 2018-2019 and participated in the development of their heart features and Research app.

Eureka Team


Cathy Horner, MPH

Platform Project Manager

Dylan Lowe, PhD

Protocol Project Manager

Noah Peyser, PhD

Scientific Program Director

Parang Kim, MA

Protocol Project Manager


Alex Cabrera

Senior Software Engineer

Jin Yu

QA Engineer

Todd Parsnick

Tech Team Manager

Alyssa Gan

Senior Data Manager

Jorge Gonzalez

Mobile Engineer

Tom Hsu

Research Data Manager

Armando Godinez

Software Engineer

Ricardo Barrera

Senior Software Engineer

Jairo Vazquez

Senior Software Engineer

Ryan Runge

Software Development Manager

UCSF Cardiology Team

Benjamin Hobson

Research Financial Analyst

Tom Dunn

Research & Finance Operations