Juan Alejos, MD, Pediatric Cardiology, Los Angeles, CA, Ronald Reagan UCLA Medical Center


Pediatric Cardiology Los Angeles, CA

Pediatric Heart Failure and Heart Transplantation

Clinical Professor

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  • Dr. Juan Alejos is a pediatric cardiologist in Los Angeles, CA and is affiliated with multiple hospitals in the area, including Ronald Reagan UCLA Medical Center, Mattel Children's Hospital UCLA, and Mattel Children's Hospital UCLA. He received his medical degree from University of Michigan Medical School and has been in practice 30 years. He also speaks multiple languages, including Spanish. He specializes in pediatric heart failure and heart transplantation and is experienced in pulmonary hypertension, pediatric cardiac catheterization, and heart failure/ heart transplant.

Education & Training

  • UCLA Medical CenterFellowship, Pediatric Cardiology, 1990 - 1993
  • UCLA Medical CenterResidency, Pediatrics, 1987 - 1990
  • University of Michigan Medical SchoolClass of 1987
  • University of Michigan Regent’s ScholarBS, Biomedical Science, 1983
  • University of MichiganBS, Premedical-Medical

Certifications & Licensure

  • CA State Medical License
    CA State Medical License 1989 - 2022
  • American Board of Pediatrics Pediatric Cardiology

Awards, Honors, & Recognition

  • Best Doctors America 2011-2012 Database, 2012
  • Huffington Post Game Changer 2011
  • Who’s Who in America America, 2010
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Clinical Trials

Publications & Presentations


Journal Articles

  • Use of OKT3 for Acute Myocarditis in Infants and Children.  
    Ahdoot J, Galindo A, Alejos JC, George B, Burch C, Marelli D, Sadeghi A, Laks H, Journal of Heart and Lung Transplantation
  • The Yield of Endomyocardial Biopsy as a Screen for Cellular Rejection in Pediatric Heart Transplant Patients.  
    Levi DS, DeConde AS, Burch C, Alejos JC, Wetzel G, Pediatric Transplantation 2004, 8(1):22-28
  • Predictors of Graft Longevity in Pediatric Heart Transplantation.  
    Leman NR, Levi, DS, Alejos JC, Wetzel GT, Pediatric Cardiology 2005, Nov-Dec;26(6):762-7
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Books/Book Chapters

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  • Monitoring of CD4 Cell Activity in Stable and Rejecting Pediatric Heart Transplant Patients.
    Perens GS, Williams RJ, Reiss J, Korin Y, Reed EF, Alejos JC, Halnon NJ, World Transplant Congress, Boston, Massachusetts
  • Elevated Doppler Tissue Imaging-Derived Indices Reflect Cellular and Humoral Rejection in Pediatric Heart Transplant Recipients.
    Alejos Behera Sk, Trang J, Drant S, Alejos JC, 27th Annual Meeting and Scientific Sessions of the International Society, San Francisco, CA
  • Screening for Rejection in Symptomatic Pediatric Heart Transplant Patients: The Sensitivity of BNP.
    Harake DE, Geiger MK, Levi DS, Halnon NJ, Alejos JC, 27th Annual Meeting and Scientific Sessions of the International Society, San Francisco, CA
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  • Transesophageal Echocardiography for the Critically Injured/Ill Patient. 
    A Multidisciplinary Approach to Traumatology, Vienna, Austria
  • Cardiovascular Response in Sepsis, Transesophageal Echocardiography in the Critically Ill. 
    University Hospital of San Paulo, Brazil
  • Inhaled Nitric Oxide vs. Partial Liquid Ventilation in ARDS and Transesophageal Echocardiography in the Critically Ill 
    University of Rochester, Department of Critical Care Medicine, Rochester, New York
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  • Method for Automatic Contour Extraction of a Cardiac Image. 
    Han CY, Porembka DT, Lin K-N
  • Misconceptions regarding double-lumen tubes and bronchoscopy. 
    Grum D, Porembka DT
  • The safety of intraosseous infusions: risks of fat and bone marrow emboli to the lungs. 
    Orlowski JP, Julius CJ, Petras RE, Porembka DT, Gallagher JM
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Press Mentions

  • I'm Aware That I'm Rare: Juan Alejos, MD (Hearts with Hope)
    I'm Aware That I'm Rare: Juan Alejos, MD (Hearts with Hope)October 24th, 2017
  • 200 Hearts Mended and Counting
    200 Hearts Mended and CountingSeptember 17th, 2017
  • I'm Aware That I'm Rare: Juan Alejos, MD
    I'm Aware That I'm Rare: Juan Alejos, MDAugust 25th, 2017

Other Languages

  • Spanish

Hospital Affiliations