Juan C. Alejos, MD

Juan C. Alejos, MD

Pediatric Cardiology
Accepting new patients
Primary Location
Children's Heart Center
200 Medical Plaza
Suite 330
Los Angeles, California 90095


Juan C. Alejos, MD, currently serves as the Medical Director of the Pediatric Heart Transplant/Cardiomyopathy Program. He started and is the Director of the Pediatric Pulmonary Hypertension program. He is a Clinical Professor at the David Geffen School of Medicine at UCLA in Pediatric Cardiology.

Dr. Alejos received his medical degree from the University of Michigan in Ann Arbor and completed an internship, residency, and fellowship at the UCLA Medical Center. His areas of research interest include the use of pulmonary vasodilator therapies in congenital heart disease especially those with single ventricle physiology. He is also active in research involving the treatment of cardiomyopathy and outcomes research pertaining to pediatric cardiac transplantation.

Dr. Alejos is also the president and founder of Hearts with Hope Foundation. Hearts with Hope is a non-profit foundation founded in 2005 that sends medical teams to underserved countries to provide medical and humanitarian support to children with congenital heart disease. The medical teams train the country's physicians on procedures and surgeries that can vastly improve a child's quality of life. All medical equipment and services are provided at no cost to the child's family.


English, Spanish


Medical Board Certification

Pediatric Cardiology, American Board of Pediatrics, 1998


Pediatric Cardiology, UCLA School of Medicine, 1993


Pediatrics, UCLA School of Medicine, 1990


Pediatrics, UCLA School of Medicine, 1988


MD, University of Michigan, 1987


Hospital Affiliations


Infant leaves UCLA's Mattel hospital for home with a transplanted heart | UCLA Health
Berlin Heart Ventricular Assist Device: UCLA



  • Heart Failure
  • Heart Transplantation
  • Ventricular Assist Devices
  • Pulmonary Hypertension
  • Single Ventricle Physiology

In the News

Baby born with disease defying odds with new heart (One year anniversary of successful transplant) - (abc7.com) March 15, 2016

Note: News links may expire without notice.


  • Top Doctors, Los Angeles Magazine, 2021