Attending Physician
Assistant Professor of Clinical Pediatrics
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Dr. Liu is a board certified pediatric gastroenterologist in the Division of Gastroenterology, Hepatology and Nutrition at The Children's Hospital of Los Angeles.  He is the Director of GI Endoscopy and also participates in national multicenter research studies and committees.

Clinical Interests

Pediatric therapeutic and advanced endoscopy, including ERCP, EUS, and deep balloon enteroscopy.  Dr. Liu also specializes in pediatric pancreatic and biliary diseases such as chronic pancreatitis and pancreatic insufficiency.


Medical School: 

Drexel University College of Medicine


Children's Hospital Los Angeles


Children's Hospital Los Angeles


Children’s Hospital Los Angeles (Pediatric Gastroenterology)

Cedars-Sinai Medical Center (Interventional and Advanced Endoscopy)



Pediatrics; American Board of Pediatrics

Professional Memberships: 

North American Society of Pediatric Gastroenterology, Hepatology and Nutrition; America Society of Gastrointestinal Endoscopy; American Gastroenterological Association; American Academy of Pediatrics.



  • Liu QY, Fishman D. “ERCP in Pediatrics”. In: ERCP and EUS: a case-based approach. Ed. Lee, LS. New York: Springer Science+Business Media; 2015: 325-40.  ISBN 978-1-4939-2319-9. DOI 10.1007/978-1-4939-2320-5_20
  • Mitsinikos FT, Michail S, Liu QY. “Gastritis, gastropathy, and ulcer disease.” In: Pediatric Gastrointestinal and Liver disease. 5th edition. Ed. Wyllie R, Hyman P. Philadelphia, PA: Elsevier; 2016: 294-308.  SIBN: 978-0-323-24099-4


  • Liu QY, Nguyen V. “Endoscopic Approach to the Patient with Congenital Biliary Tract Anomalies”. In: Endoscopic Approach to the Patient with Biliary Tract Disease. Gastrointestinal Endoscopy Clinics of North America. Ed. Van Dam, J. 2013 Apr;23(2): 505-18. PMID: 23540973
  • Lakhole A, Liu QY. “Role of Endoscopic Ultrasound in Pediatric Disease.” In: Pediatric Endoscopy.  Gastrointestinal Endoscopy Clinics of North America.  Ed. Lightdale, J. 2016 Jan;26(1): 137-53 PMID: 26616901

Peered Review Articles

  • Short SS,Frykman PK, Nguyen N, Liu Q, Berel D, Wang K. “Laparoscopic Common Bile Duct Exploration in Children is Associated with Decreased Cost and Length of Stay: Results of a Two-Center Analysis.” J. Ped Surg. 2013 Jan; 48(1): 215-20. PMID: 2333181
  • Danialifar T, Naon H, Liu QY. "Comparison of diagnostic accuracy and concordance of Video Capsule Endoscopy and Double Balloon Enteroscopy in children." J Pediatr Gastroenterol Nutr.  PMID: 26655936
Research Interests: 

Current research in pediatric ERCP, capsule endoscopy, and pediatric pancreatitis.  Dr. Liu is currently involved in the Pediatric ERCP Database Initiative (PEDI) and the International Study Group of Pediatric Pancreatitis: In Search for a Cure (INSPPIRE) consortium.

Children's Hospital Los Angeles

4650 Sunset Blvd.
MS #78
Los Angeles, CA 90027
Phone: 323-361-2181Office
Fax: 323-361-3718Fax

CHLA - Arcadia

468 E. Santa Clara St.
Arcadia, CA 91006
Phone: 626-795-7177Office
Fax: 626-357-4052Fax