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Conditions & Advice
Parenting Tips and Advice
From bringing home a new baby to building trust with your teen, our pediatric experts share guidance to help you navigate the ups and downs of parenthood.
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Research & Innovation
It starts with a Q:
For the latest cutting-edge research, innovative collaborations and remarkable discoveries in child health, read stories from across all our areas of study in Q: Advances and Answers in Pediatric Health.
ParentSmart HealthlineTM
Caring pediatric nurses are available 24/7 to help answer your questions.
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Children’s Hospital Colorado
Anschutz Medical Campus
13123 East 16th Avenue
Aurora, CO 80045
Emergency Locations
In life-treatening emergencies, find the emergency room location nearest you. For non-life-treatening medical needs when your pediatrician is unavailable, visit one of our convenient urgent care locations.
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Insurance plans accepted
We participate with most major health insurance plans and national transplant networks.
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Get to know Thomas Walker, MD
Departments and Programs
Conditions Treated
Experience and background
Undergraduate 1987
University of Notre Dame (IN)
Medical Education 1995
Oregon Health & Science University School of Medicine
Residency 1998
Oregon Health & Science University
Fellowship 2004
Harvard University/Boston Children's Hospital Program
Attending of the Year 2016
Blind Squirrel
Harvard Medical School Fellowship in Pediatric GI and Nutrition
Teacher of the Year 2018
Fellowship in Pediatric Gastroenterology and Hepatology
Faculty member of
Provider's location(s)
Patient ratings and reviews
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Meet other experts
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Allison Creager, CPNP, FNP-BC, MS
Certified Family Nurse Practitioner
Renee Herrman, NP
Certified Pediatric Nurse Practitioner
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Lindsey Gumer, MD, MSc
Gastroenterology - Pediatric, Pediatrics