Katherine A. Orellana, DO

Katherine Orellana, DO
Pediatric Gastroenterology
Valley Medical Group
Member, ColigoCare
ColigoCare is a network of physicians working collectively to provide the highest quality care to patients and the community.


Katherine Orellana


VMG - Gastroenterology, Park Ridge

140 East Ridgewood Avenue
Suite N480
Paramus, NJ 07652
Phone: 201-389-0815
Fax: 201-857-8770



B S, Fairleigh Dickinson University, 1996 - 2000

DO, UMDNJ School Of Osteopathic Medicine, 2000 - 2004

FELLOW, Children's Hospital At Montefiore, Pediatric Gastroenterology, 2008 - 2011

FELLOW, New York Presbyterian Hospital Columbia, Pediatric Hepatology, 2011 - 2012

RES, Morristown Memorial Hospital, Pediatrics, 2004 - 2007

Board Certifications

American Board Of Ped, Transplant Hepatology - Certified, 2012

American Board Of Pediatrics - Certified, 2007

Pediatric Gastroenterology - Certified, 2011

Get to Know Me

What are some of the specific conditions you treat?

Abdominal pain, constipation, diarrhea, GERD, vomiting, milk protein allergy, failure to thrive/poor weight gain, inflammatory bowel disease (crohn's disease, ulcerative colitis), celiac disease, jaundice, liver disease.

What techniques or procedures do you use in your practice?

Upper endoscopy (EGD), colonoscopy, polypectomy, lactose breath test, liver biopsy.

What would you like patients to know about your approach to care?

I feel that pediatrics is a family centered specialty and that it is important to involve the parents and child in treating and managing their particular disorder. I order bloodwork and endoscopy only when needed. My office staff and I work with the parents and child to minimize any discomfort and attempt to alleviate any associated anxiety or fear.

Publications & Research


Pyogenic Liver Abscess Masquerading as a Hepatic Neoplasm
Journal of Pediatric Gastroenterology and Nutrition

Abdominal Pain
AAP Signs and Symptoms in Pediatrics

Chronic Abdominal Pain and Depressive Symptoms: Analysis of the National Longitudinal Study of Adolescent Health
Clinical Gastroenterology and Hepatology

Celiac Crisis in the Modern Era
Journal of Pediatric Gastroenterology and Hepatology


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