Primary Office

Nicklaus Children's Palm Beach Gardens Outpatient Ctr-Cardiology
11310 Legacy Avenue
Palm Beach Gardens, FL 33410
Phone Number: 561-514-7390

Additional Office

Nicklaus Children's Pediatric Specialists At Palm City-Cardiology
3328 SW Martin Downs Blvd #33
Palm City, FL 34990
Phone Number: 561-514-7390


Fellowship - Advocate Christ Medical Center / Advocate Children's Hospital
Residency - University of Florida
Medical School - Midwestern University Arizona College of Osteopathic Medicine

Board Certifications

American Board of Pediatrics (Pediatrics) - Certified
American Board of Pediatrics (Ped Cardiology) - Certified

Joanna Lowisz, DO 
Medical Director, Preventive Cardiology Program 

Dr. Joanna Lowisz is a fetal and pediatric cardiologist and serves as medical director of the Preventive Cardiology Program within the Heart Institute at Nicklaus Children’s Hospital.  In her role as medical director, Dr. Lowisz is responsible for setting the strategy for the Preventive Cardiology Program, as well as overseeing all clinical care, quality metrics, teaching, research and fiscal planning. Dr. Lowisz earned her medical degree from Midwestern University Chicago College of Osteopathic Medicine in Downers Grove, Illinois. She completed a residency in pediatrics at University of Florida College of Medicine in Jacksonville. Dr. Lowisz then pursued a fellowship in pediatric cardiology at Advocate Children’s Hospital in Oak Lawn, Illinois. Her clinical interests include preventive cardiology, fetal cardiology and echocardiography.  

Dr. Lowisz is board certified in general pediatrics and pediatric cardiology. She is a member of the American Heart Association, American Society of Echocardiography and Fetal Heart Society. Her work has been published in peer-reviewed journals and she has presented at medical conferences. 

Dr. Lowisz is employed by Nicklaus Children’s Pediatric Specialists (NCPS), the multispecialty medical group practice of Nicklaus Children’s Health System. She speaks English and Polish. 

The Heart Institute at Nicklaus Children’s Hospital, a world leader in pediatric cardiology and cardiovascular surgery for the care of children with congenital heart disease, serves as a beacon to families confronting the reality of a child or newborn with a heart defect. It offers the most innovative and least invasive approaches to the treatment of congenital heart disease, including many first-in-the-world procedures that were pioneered right here by the Heart Institute’s own internationally renowned cardiologists and cardiovascular surgeons. 


Lowisz, J., Alenghat, F.J., Li, Y., et al (2021). Comparison of semi-automated versus manual quantitative right ventricular assessment in tetralogy of Fallot . Cardiology in the young, 31(11), 1781-1787. View in Pubmed

McCloud, A.K., Lowisz, J., Roberson, D.A., et al (2019). Semi-automated speckle-tracking for quantitative right ventricular assessment in children and adolescents. Cardiology in the young, 29(9), 1149-1159. View in Pubmed

Ganczar (Lowisz), J., Robert, E. (2015). Uhl's anomaly: Absence of the right ventricular myocardium. Annals of pediatric cardiology, 8(1), 71-73. View in Pubmed

A clinician identified with a Nicklaus Children’s Pediatric Specialists logo is an affiliate of Nicklaus Children's Health System. All other clinicians listed on the website are in independent medical practices.