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2800 Marcus AveSuite 201Lake Success, NY 11042
Phone+1 516-622-6076
Fax+1 516-622-6075
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Summary
- Leonard Haas, MD, is a Pediatric Gastroenterologist based in Lake Success, NY, currently practicing at Optum Pediatric Gastroenterology. Dr. Haas completed his fellowship in Pediatric Gastroenterology at Johns Hopkins University after his residency in Pediatrics at New York Presbyterian Hospital (Cornell Campus), and he earned his medical degree from Mayo Clinic College of Medicine in 2018. He has published multiple studies, including work on inflammatory bowel disease featured in Digestive Diseases and Sciences and research on sensory neurons in Current Biology. His research contributions have been cited extensively in other scientific publications.
Education & Training
Johns Hopkins UniversityFellowship, Pediatric Gastroenterology, 2021 - 2024
New York Presbyterian Hospital (Cornell Campus)Residency, Pediatrics, 2018 - 2021
Mayo Clinic College of MedicineClass of 2018, MD
Certifications & Licensure
NY State Medical License 2024 - 2026
MD State Medical License 2021 - 2024
American Board of Pediatrics Pediatrics
Publications & Presentations
PubMed
- Characteristics and Outcomes of Over a Million Patients with Inflammatory Bowel Disease in Seven Countries: Multinational Cohort Study and Open Data Resource.Chen Yanover, Ramit Magen-Rimon, Erica A Voss, Joel Swerdel, Anna Sheahan
Digestive Diseases and Sciences. 2025-02-01 - 4 citationsComparison of two small bowel distending agents for enterography in pediatric small bowel imagingAmy B. Kolbe, Leonard A. Haas, David J. Bartlett, Veena R. Iyer, Kristen B. Thomas
Abdominal Radiology. 2019-10-01 - 19 citationsBiologic Agents Are Associated with Excessive Weight Gain in Children with Inflammatory Bowel DiseaseLeonard A. Haas, Rachel Chevalier, Brittny Major, Felicity Enders, Seema Kumar
Digestive Diseases and Sciences. 2017-09-11
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