Dr. Michael K. Wang, Pediatric Gastroenterology

Dr. Michael K. Wang, Pediatric Gastroenterology

  • Michael K Wang DO
  • Office: 714-509-4099
  • Specialty: Gastroenterology
  • Board Certified: Pediatrics, Pediatric Gastroenterology

Dr. Michael Wang is a pediatric gastroenterologist with expertise in caring for infants, children, and young adults with a wide range of gastrointestinal and hepatobiliary disorders. His clinical practice is focused on providing compassionate, comprehensive care centered around patients and their families. Dr. Wang is specialized in inflammatory bowel disease (IBD) including Crohn’s disease and ulcerative colitis, as well as IBD research, and is co-director of the IBD Program at CHOC.

In the multidisciplinary IBD program at CHOC, patients have access to a full spectrum of services including pediatric surgeons, registered dietitians, social workers, and nurse coordinators. We work together with each family to align the most up-to-date medical evidence with each patient’s individual needs and priorities.

Michael K Wang DO is on staff at CHOC Hospital in Orange .


CHOC Clinic
1201 W. La Veta Ave.
Building: CHOC Clinic
Orange, CA 92868

CHOC Center for Children’s Health
Building: Joe C. Wen & Family Center for Advanced Care, UCI Health – Irvine
19200 Jamboree Rd., Suite 2000
Irvine, CA 92612


  • Medical School
    University of North Texas Health Science Center, Fort Worth, TX
  • Pediatrics Residency
    Children’s Memorial Hermann Hospital, Houston, TX
  • Pediatric Gastroenterology Fellowship
    Texas Children’s Hospital, Houston, TX

Published Works

  • Kandavel P, Eder SJ, Adler J et al; and the ImproveCareNow Network Pediatric IBD Learning Health System. Reduced Systemic Corticosteroid Use among Pediatric Patients With Inflammatory Bowel Disease in a Large Learning Health System. J Pediatr Gastroenterol Nutr. 2021 Sep 1;73(3):345-351.
  • Queliza K, Wang MK, Kellermayer R. Compliance With Fecal Calprotectin Testing in Pediatric Patients With Inflammatory Bowel Disease. J Pediatr Gastroenterol Nutr. 2018 Jun;66(6):932-933
  • Wang MK, Ng K. Isolated appendiceal pinworms on colonoscopy. J Pediatr Gastroenterol Nutr. 2017 June;64(6):e155. PMID: 28045771 (http://journals.lww.com/jpgn/fulltext/2017/06000/Isolated_Appendiceal_Pinworms_on_Colonoscopy.35.aspx)
  • Toy, Lahoti, Yetman, Hormann, Girardet, McNeese, Sanders, Geltemeyer. Case Files Pediatrics 5th Edition. New York: McGraw-Hill Education/Medical 2015 (Wang M, contributing author to Kawasaki disease, Neonatal Herpes Simplex Virus chapters)
  • Alviar C, Tellez A, Wang M, Potts P, Smith D, et al. Low-dose sirolimus-eluting hydroxyapatite coating on stents does not increase platelet activation and adhesion ex vivo. Journal of Thrombosis and Thrombolysis. Journal 34, Volume 1 (2012), 91-98

Poster Presentations

  • Ada M, Wang M. Celiac Disease Presenting in a Toddler with Recurrent Intussusception. NASPGHAN Annual Meeting. October 2022
  • Visnagra K, Wang M. Tofacitinib Use in Pediatric Patient with Ulcerative Colitis Receiving Monthly Immunoglobulin Infusions for Immunodeficiency. NASPGHAN Annual Meeting. October 2022
  • Ada M, Wang M. Mycophenolate Mofetil-Induced Colitis in a Teenager Following Kidney Transplant. NASPGHAN Annual Meeting. October 2021
  • Wang MK, Raj P, Fishman DS, Kellermayer R. Fecal calprotectin is a valuable screening tool in a large North American pediatric gastroenterology center. World Congress of Pediatric Gastroenterology, Hepatology and Nutrition. October 6, 2016. Montreal, QC, Canada.

Poster of Distinction

  • Queliza K, Wang MK, Kellermayer R. Good Compliance with Fecal Calprotectin Testing in Pediatric Inflammatory Bowel Disease Patients. NASPGHAN 2017


About Dr. Wang
Meet Dr. Michael Wang

Dr. Michael K. Wang, Pediatric Gastroenterology