Dr. Margaret McEntegart is an interventional cardiologist who oversees Columbia's complex PCI service, one of the leading programs for complex coronary artery care in New York City, as Director of Complex PCI and CTO programs. She is also the Associate Director of Cardiac Catheterization Laboratories.

An internationally renowned clinician and researcher, Dr. McEntegart served as a consultant interventional cardiologist at Golden Jubilee National Hospital before joining Columbia, working at one of the largest PCI centers in the UK, with over 3,000 PCIs per year. While there, she established and led the CTO and Complex PCI Program. She also led their MitraClip service and expanded her role to support their transcatheter aortic valve replacement (TAVR) service.

Dr. McEntegart has been a principal investigator for a number of local, national, and international clinical trials and co-supervised the university's interventional cardiology Ph.D. research fellows with Professor Colin Berry. She established the Glasgow Coronary Core Lab, providing analyses for research that included the UK multicenter T-TIME trial and the BCIS-REVIVED study.

As part of her role at Columbia, she provides training and support for junior faculty, supervision and mentorship for interventional cardiology fellows, and promotes education for cardiologists and health professionals.