Attending Cardiothoracic Surgeon
Investigator, Regenerative Medicine

Assistant Professor of Surgery, Keck School of Medicine of USC
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Ram Kumar Subramanyan, MD, PhD is an Assistant Professor of Surgery and Pediatrics at the Keck School of Medicine of the University of Southern California. He received his medical degree from Madras Medical College, India. He completed his general surgery residency at the University of Southern California in 2008 under Tom R. DeMeester, MD. During his residency, he also completed a PhD in Pathobiology studying angiogenesis and blood vessel maturation in the laboratory of Parkash S. Gill, MD. He then continued his cardiothoracic surgery training at the University of Southern California and his Congenital Cardiac Surgery Fellowship at Children's Hospital, Los Angeles both under Vaughn A. Starnes, MD.

He is an attending Pediatric cardiothoracic surgeon practicing the full spectrum of pediatric cardiac and thoracic procedures. His clinical interests include neonatal cardiac surgery and complex bi-ventricular repairs. He runs an NIH-funded basic science laboratory that studies cardiac development with a particular focus on outflow tract maturation. He is the editor of the congenital heart surgery curriculum for Thoracic Surgery trainees nationally as well as the editor of curriculum for Congenital Cardiac surgery trainees. He is an active member of National and International Societies and participates in various capacities in their activities. He is also on the Editorial Board of the Journal of Thoracic and Cardiovascular Surgery, ASAIO journal, World Journal for Pediatric and Congenital Heart Surgery and Enliven: Stem Cell and Regenerative Medicine.


Medical School: 

Madras Medical College, Madras, India

Graduate School: 

University of Southern California- PhD


University of Southern California, Los Angeles County/University of Southern California Medical Center, Surgery Internship


University of Southern California, Los Angeles County/University of Southern California Medical Center, Surgery Residency; University of Southern California, Los Angeles County/University of Southern California Medical Center, Thoracic Surgery Residency


Children's Hospital Los Angeles, Congenital Cardiac Surgery Fellowship



American Board of Surgery

American Board of Thoracic Surgery

Congenital Cardiac Surgery Sub-specialty Certification


Pasadena Top Doctors

Research Interests: 

Dr. Subramanyan is a pediatric cardiac surgeon-scientist. In addition to his busy clinical practice he also runs an NIH-funded basic science research lab studying the molecular mechanisms that govern cardiac development. The primary focus of his basic science research is understanding cell fate decisions and cell-cell interaction in the maturation of the cardiac outflow tract. He has established unique mouse models to study co-existing lesions such as cleft palate and congenital heart disease, as well as different types of double outlet right ventricle. His research has been funded by the National Institutes of Health and American Heart Association.

He also pursues a number of clinical research efforts. He focuses on outcomes research studying surgical outcomes in intricate single ventricle palliation and complex neonatal heart disease. He has over 80 peer-reviewed publications, has co-authored two books, several textbook chapters and given over 30 presentations in a variety of conferences in various parts of the world.

4650 Sunset Blvd.
Thoracic/Vascular Surgery, MS 66
Los Angeles, CA 90027
Phone: 323-361-4148Office
Fax: 323-361-3668Fax