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Gregory S. Perens, MD

Pediatric Cardiology
Primary Location
Children's Heart Center
200 Medical Plaza
Los Angeles, California 90095


Dr. Perens trained in pediatric cardiology at UCLA and has been a member of the cardiology staff since 2006. His clinical interests include pediatric cardiomyopathy and heart transplantation in children, Marfan syndrome, familial hypercholesterolemia, and echocardiography.

Dr. Perens has been involved with outreach missions in Peru, visiting there many times with Corazones Con Esperanza mission to provide cardiology care to children there ( He is also actively involved with Camp del Corazon, a free camp for children with heart disease.

Dr. Perens is part of the Congenial Heart 3D printing and Virtual Reality team. He creates 3D models of complex congenital hearts for surgery and catheterization planning. 

Patient Stories

Cash's Heart Journey


Medical Board Certifications

Pediatric Cardiology, American Board of Pediatrics, 2006


UCLA School of Medicine, 2006


UC Irvine Medical Center, 2002


Medical College of Virginia, MD, 1999


West Los Angeles

Children's Heart Center

Cardiology| Pediatric Cardiology| Congenital Cardiac Disease +3 more

Hospital Affiliations



  • Antibody mediated rejection
  • Non-invasive imaging for cardiac inflammation


Link to my PubMed publications >

  1. A novel association of biventricular cardiac noncompaction and diabetic embryopathy: case report and review of the literature. Woo JS, Perez-Rosendahl M, Haydel D, Perens G, Fishbein MC. Pediatr Dev Pathol. 2015 Jan-Feb;18(1):71-5. doi: 10.2350/14-07-1532-CR.1. Epub 2014 Nov 11. Review. PMID: 25386687 Similar articles. Select item 25108499
  2. Posterolateral hypertrophic cardiomyopathy: a rare, but clinically significant variant of hypertrophic cardiomyopathy. Seki A, Perens G, Fishbein MC. Cardiovasc Pathol. 2014 Nov-Dec;23(6):381-2. doi: 10.1016/j.carpath.2014.07.002. Epub 2014 Jul 15. PMID: 25108499 Similar articles. Select item 23518027
  3. Primary endocardial fibroelastosis: an underappreciated cause of cardiomyopathy in children. Seki A, Patel S, Ashraf S, Perens G, Fishbein MC. Cardiovasc Pathol. 2013 Sep-Oct;22(5):345-50. doi: 10.1016/j.carpath.2013.02.003. Epub 2013 Mar 19. PMID: 23518027. Similar articles. Select item 23696469
  4. First report of a de novo 18q11.2 microdeletion including GATA6 associated with complex congenital heart disease and renal abnormalities. Bui PH, Dorrani N, Wong D, Perens G, Dipple KM, Quintero-Rivera F. Am J Med Genet A. 2013 Jul;161A(7):1773-8. doi: 10.1002/ajmg.a.35974. Epub 2013 May 21. PMID: 23696469 Similar articles. Select item 22475572
  5. Canonical Wnt/β-catenin signaling in epicardial fibrosis of failed pediatric heart allografts with diastolic dysfunction. Ye B, Ge Y, Perens G, Hong L, Xu H, Fishbein MC, Li F. Cardiovasc Pathol. 2013 Jan-Feb;22(1):54-7. doi: 10.1016/j.carpath.2012.03.004. Epub 2012 Apr 2. PMID: 22475572 Free PMC Article. Similar articles. Select item 21640617
  6. Diverse morphologic manifestations of cardiac allograft vasculopathy: a pathologic study of 64 allograft hearts. Lu WH, Palatnik K, Fishbein GA, Lai C, Levi DS, Perens G, Alejos J, Kobashigawa J, Fishbein MC. J Heart Lung Transplant. 2011 Sep;30(9):1044-50. doi: 10.1016/j.healun.2011.04.008. Epub 2011 Jun 2. PMID: 21640617 Similar articles. Select item 20224752
  7. Initial Experience with Sildenafil, Bosentan, and Nitric Oxide for Pediatric Cardiomyopathy Patients with Elevated Pulmonary Vascular Resistance before and after Orthotopic Heart Transplantation. Daftari B, Alejos JC, Perens G. J Transplant. 2010;2010:656984. doi: 10.1155/2010/656984. Epub 2010 Mar 10. PMID: 20224752 Free PMC Article. Similar articles. Select item 19017288
  8. Clinico-pathologic findings in end-stage pediatric heart transplant grafts. Perens G, Li F, Meier S, Kaur R, Alejos JC, Fishbein M. Pediatr Transplant. 2009 Nov;13(7):887-91. doi: 10.1111/j.1399-3046.2008.01087.x. Epub 2008 Oct 31. PMID: 19017288 Similar articles. Select item 19660618
  9. The corrected QT interval before and after heart transplantation. Moore JP, Alejos JC, Perens G, Wong S, Shannon KM. Am J Cardiol. 2009 Aug 15;104(4):596-601. doi: 10.1016/j.amjcard.2009.04.024. Epub 2009 Jun 18. PMID: 19660618. Similar articles. Select item 18466430
  10. Growth and weight gain of prepubertal children after cardiac transplantation. Peterson RE, Perens GS, Alejos JC, Wetzel GT, Chang RK. Pediatr Transplant. 2008 Jun;12(4)436-41. doi: 10.1111/j.1399-3046.2007.00826.x. PMID: 18466430


  • Top Doctors, Los Angeles Magazine, 2021
  • Pediatric Cardiology Teaching Award 2015
  • Pediatric Cardiology Teaching Award 2011