Gregg C. Fonarow, MD, FACC, FAHA, FHFSA is the Eliot Corday Professor of Cardiovascular Medicine and Science at UCLA, where he serves as Director of the Ahmanson-UCLA Cardiomyopathy Center and Co-Director of the UCLA Preventative Cardiology Program. He attained the rank of Professor of Medicine at the David Geffen School of Medicine at UCLA in 2003, and from 2020 to 2024 served as Interim Chief of the UCLA Division of Cardiology.

Dr. Fonarow's research has centered on acute and chronic heart failure, preventative cardiology, quality of care, outcomes, and implementing systems of care to improve clinical outcomes. He conceived and led landmark heart failure initiatives including Get With The Guidelines-HF, the ADHERE registry, OPTIMIZE-HF, IMPROVE-HF, CHAMP-HF, and IMPLEMENT-HF work that established bedside risk stratification, defined the link between performance measures and outcomes, and demonstrated that guideline-directed medical therapy improves survival. His findings have shaped ACC/AHA/HFSA heart failure guidelines and performance measures and have informed national quality initiatives on use and optimal dosing of guideline-directed medical therapy.

He has published over 1,900 research studies and clinical trials, with an H-index of 189 and more than 185,000 citations. Each year from 2014 to 2024, he has been named by Clarivate to its list of Highly Cited Researchers. A dedicated mentor, he has supported the careers of more than 200 early career investigators.

Dr. Fonarow has served on the HFSA Board of Directors, on the writing group for the ACC/AHA/HFSA Heart Failure Guidelines, Research Committee, and chaired the 2025 HFSA Statistical Update Committee. His honors include the AHA Gold Heart Award (2022), the AHA QCOR Outstanding Lifetime Achievement Award (2019), and election to the Association of University Cardiologists.