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Our Cardiac Care Team

Under the leadership of Daniel H. Gruenstein, MD, cardiologists at the University of Chicago Medicine Comer Children's Hospital provide care for infants, children and teens with congenital and acquired heart conditions, including arrhythmias, genetic disorders, infections, heart failure and valve disease. We work closely with cardiac surgeons, as well as experts in other pediatric specialties.

Our team includes highly skilled nurses, medical imaging specialists, echocardiography technicians, genetics experts, and other staff who specialize in caring for children with heart disease. Child life specialists and social workers are available to provide additional support for patients and families.


Daniel Gruenstein, MD
Section Chief, Pediatric Cardiology

Brojendra Agarwala, MD
Umesh Dyamenahalli, MD
Abraham Groner, MD
Paula Williams, MD

Cardiac Surgery

Gerhard Ziemer, MD, PhD
Director, Pediatric Cardiac Surgery

Grace Macek, APN, PPCNP-BC
Melanie Sojka, APN, CPNP-PC/AC

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The University of Chicago Medicine Comer Children's Hospital  |   5721 S. Maryland Avenue   |   Chicago, IL 60637