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Maria Oliva-Hemker, M.D.


Chief of Pediatric Gastroenterology and Nutrition

Stermer Family Professor of Pediatric Inflammatory Bowel Disease



Gastroenterology and Nutrition
Inflammatory Bowel Disease Center


Brady 320
600 N. Wolfe Street
Baltimore, MD 21287-2631                                                                                                                 

Dr. Oliva-Hemker currently sees patients at the Rubenstein Child Health Building in Baltimore and at the Greater Baltimore Medical Center in Towson.


Medical School:         
Johns Hopkins University School of Medicine

Johns Hopkins Children's Center – Pediatrics

Johns Hopkins Children's Center – Gastroenterology

Special Interests:

Autoimmune Enteropathy
Eosinophilic Gastroenteritis


Dr. Maria Oliva-Hemker  received her medical degree from the Johns Hopkins University School of Medicine. She completed her residency in pediatrics and did a fellowship in pediatric gastroenterology at Johns Hopkins and then joined the faculty in 1993.  In 2008 she was appointed Chief of the Division of Pediatric Gastroenterology and Nutrition.

In 1998, Dr. Oliva-Hemker began the Pediatric Inflammatory Bowel Disease (IBD) Center at Hopkins, which provides evaluation and medical care to hundreds of children and adolescents with Crohn’s disease and ulcerative colitis from all over the United States and beyond. She is the inaugural recipient of the Stermer Family Professorship in Pediatric IBD.  Dr. Oliva-Hemker is an active clinical research who has co-authored numerous articles, book chapters and reviews and has served on multiple editorial boards. She is an editor-in-chief of the book “Your Child with Inflammatory Bowel Disease: A Family Guide for Caregiving.”

Dr. Oliva-Hemker’s clinical practice focuses on inflammatory intestinal disorders such as IBD, autoimmune enteropathy and eosinophilic gastroenteritis. Additional clinical interests include malabsorption syndromes and nutritionally-related disorders such as short bowel syndrome, failure-to-thrive and celiac disease. Dr. Oliva-Hemker has been named among “America’s Top Doctors” by Castle Connolly Medical Ltd. for more than 10 years and is among Marquis’ “Who’s Who in Medicine and Healthcare.” She has been named a Baltimore “Top Doc” and has received a U.S. News and World Report “Top Doctor” designation for being in the top 1% of pediatric gastroenterologists in the nation.


  • American Board of Pediatrics
  • American Board of Pediatrics, Pediatric Gastroenterology     


Baltimore Magazine detail

Maria Oliva-Hemker, M.D.,  was named a "top doc" in 2013 in Baltimore Magazine's annual rank list..



Phone: 410-955-8769

Fax: 410-955-1464


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