Meet our team

Ankur Chugh, MD
Ankur Chugh MD

Dr. Chugh is a board-certified pediatric gastroenterologist and director of the Celiac Disease program at Children’s Wisconsin. He has specific expertise in Celiac Disease, including complex cases, but treats patients with any pediatric GI disorder. In his free time, he loves spending time with his kids and family. On the occasional date night with his wife, he enjoys trying Milwaukee restaurants and going to Bucks games!

Brittany Gresl, PhDBrittany Gresl

Dr. Gresl is board certified in Clinical Child and Adolescent Psychology with a specialty in Pediatric Health Psychology. She has extensive experience working with children and families experiencing chronic illness, and specializes in working with children, adolescents and young adults with gastrointestinal disorders including Inflammatory Bowel Disease (IBD), Celiac Disease and Disorders of gut-brain interaction (DGBIs).

Doug Zabrowski, MD
Doug Zabrowski MD

Dr. Zabrowski is a board-certified pediatric gastroenterologist, working primarily in Appleton and Green Bay. He is the director of gastroenterology for Children’s Wisconsin in the Northeast. He has a special interest in Celiac Disease but treats all pediatric GI patients. In his free time, you’ll find him spending time with his wife and 3 children or watching Wisconsin sports. He is a trained opera singer, likes to participate in his local church and is an amateur gardener.

Lauren Matschull, MBA, CD, RDLauren Matschull, MBA, RD, CD

Lauren is a senior dietitian and certified nutrition support clinician at Children’s Wisconsin, working primarily in Milwaukee. She has been a dietitian since 2012. Her areas of interest include celiac disease and many other GI disorders that affect nutrition. In her free time, Lauren enjoys cooking, baking, gardening and spending time with her children.

Megan McNally, APNPMegan McNally

Megan is a certified Pediatric Nurse Practitioner. She has a special interest in Celiac Disease, and treats a variety of other pediatric GI and nutrition conditions. In her free time, she enjoys traveling the world, spending time with her family and cheering on Wisconsin sports teams.

Katelyn Wick, RD, CD

Katelyn is a clinical dietitian at the Appleton clinic. Her areas of interest include diabetes, celiac disease and nutrition education. In her free time, Katelyn enjoys traveling, watching baseball games, cooking/baking and home improvement projects.


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To make an appointment, call our Central Scheduling team or request an appointment online.

(877) 607-5280

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