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Gregory P. Fontana, MD is an international leader in cardiothoracic surgery, whose primary professional focus has been on less invasive approaches to the treatment of structural heart disease.

He previously served as Managing Director of the Heart and Vascular Institute and Chairman of the Department of Cardiothoracic Surgery at Lenox Hill Hospital in New York City, Vice Chairman of Surgery and attending cardiac surgeon at Cedars Sinai Medical Center's Heart Institute in Los Angeles and as Clinical Professor of Surgery at the David Geffen School of Medicine at UCLA.

Dr. Fontana has been a pioneer and principal investigator for several minimally invasive approaches in cardiac surgery involving transcatheter valve therapies and minimally invasive surgical procedures for congenital and acquired heart disease.

Among many others, he has been a principal investigator in the Partner Trial of transcatheter aortic valve implantation, the CoreValve Pivotal trial, the Medtronic Low-Risk TAVR Trial, and the Perceval trial of sutureless aortic valves, and is currently the national principal investigator for the St. Jude Transcatheter Portico Valve IDE Pivotal trial.

As a widely published researcher and author, Dr. Fontana's contributions to medical literature includes more than 150 academic citations including articles, book chapters and reviews.


Medical School
University of California Los Angeles School of Medicine

Duke University Medical Center

Children's Hospital of Boston



Procedures & Conditions


  • Minimally Invasive Surgery
  • Transcatheter Procedures For Valvular Heart Disease
  • Congenital Heart Disease in Adults, Aortic Surgery
  • Mitral Valve Repair
  • Surgery for Atrial Fibr illation


  • Acute coronary syndrome
  • Chest pain (angina)
  • Congenital heart defects
  • Coronary heart disease
  • Heart attack
  • Heart failure
  • Heart valve problems
  • High blood pressure
  • High cholesterol
  • Rhythm disorders such as atrial fibrillation


Thoracic and Cardiac Surgery

Office Locations

Cardiovascular Institute of Los Robles Hospital and Medical Center
227 West Janss Rd
Suite 340
Thousand Oaks, CA 91360
Phone: (805) 852-9100