Demetrios N Mallios, MD

Demetrios N. Mallios, MD is a board-certified cardiothoracic surgeon with subspecialty training in congenital cardiac surgery who specializes in the surgical management of congenital heart disease in both children and adults in affiliation with Children’s Hospital of Los Angeles and Keck Hospital of USC.

Dr. Mallios received his medical degree from the University of Pittsburgh School of Medicine where he served a term as class president, and he completed his residency training in cardiothoracic surgery at LAC+USC Medical Center/University of Southern California where he completed an additional year as a clinical research fellow. He then completed a subspecialty fellowship in congenital cardiac surgery at Children’s Hospital of Los Angeles under the direction of Vaughn Starnes, MD. Dr. Mallios is certified by the American Board of Thoracic Surgery.

Dr. Mallios enjoys working with a multidisciplinary team of surgeons, cardiologists, advanced practice providers, and nurses who focus on the care of patients with congenital heart disease from the neonatal period into adulthood. His research and clinical interests include neonatal surgery, aortic root and arch surgery, and adult congenital heart surgery.  He has broad expertise in a myriad of complex cardiac surgical procedures. 

In his free time, Dr. Mallios enjoys traveling around the world with family and friends and trying new restaurants in the Los Angeles area.