Melanie Kandt Nies, M.D.

Headshot of Melanie Kandt Nies
  • Director, Pediatric Cardiology Echocardiography Laboratory
  • Assistant Professor of Pediatrics


Congenital Diaphragmatic Hernia, Echocardiography, Fetal Echocardiography, Non-invasive Imaging, Pediatric Cardiology, Pediatric Congenital Heart Disease, Pulmonary Hypertension, Transesophogeal Echocardiography (TEE) more

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The Johns Hopkins Hospital (Main Entrance)

Appointment Phone: 443-997-5437
1800 Orleans St.
The Charlotte R. Bloomberg Children's Center Building, Pediatric Cardiology, M2201
Baltimore, MD 21287 map


Dr. Melanie Kandt Nies is a pediatric cardiologist specializing in congenital heart disease, echocardiography and pulmonary hypertension.  She completed her medical school education at the University of North Carolina School of Medicine, followed by her residency and pediatric cardiology and fellowship at the Johns Hopkins Children’s Center. 

Dr. Nies' research focuses on non-invasive diagnosis, therapeutic monitoring and prognosis of pulmonary hypertension using non-invasive imaging and biomarkers.  She has advanced training in echocardiography and proteomic biomarker discovery.  She works as part of a multidisciplinary team at Johns Hopkins Hospital, caring for patients with pulmonary hypertension, and as part of Kennedy Krieger Institute’s multidisciplinary team for the care of patients with congenital diaphragmatic hernia. 

Dr. Nies lives in Baltimore City with her husband and two young sons.  She and her family are fans of the Baltimore Orioles and Ravens, and enjoy the many city parks, food and cultural activities of Baltimore City. more


  • Director, Pediatric Cardiology Echocardiography Laboratory
  • Assistant Professor of Pediatrics

Departments / Divisions

Centers & Institutes



  • MD; University of North Carolina School of Medicine (2007)


  • Pediatrics; Johns Hopkins University School of Medicine (2010)


  • Pediatric Cardiology; Johns Hopkins University School of Medicine (2013)

Board Certifications

  • American Board of Pediatrics (Pediatric Cardiology) (2014)

Patient Ratings & Comments

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

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