The Inflammatory Bowel Disease Center's team includes experts in adult and pediatric gastroenterology, surgery, pathology, radiology, nutrition and other disciplines. We also have a team of physician assistants who specialize in surgical care as well as ostomy and wound management.

The entire UChicago Medicine inflammatory bowel disease team outside the CCD

In addition, our center's co-directors, David T. Rubin, MD, and Russell Cohen, MD, each work with an advanced practice nurse (APN) who is trained in IBD care in the outpatient setting. The APN manages and treats inflammatory bowel disease in collaboration with the physicians. APNs see established patients independently in the clinic setting and are able to order necessary lab work or diagnostic testing and order prescription medications.

To schedule an appointment with an APN, please call 773-702-6140.


Eugene Chang, MD

Registered Dietitians

Courtney Schumann, MS, RD, LDN
Elizabeth Wall, MS, RD, LDN, CNSC
Lori Welstead, MS, RD, LDN

Genetic Counselor

Jessica Stoll, MS, CGC
Certified Genetic Counselor

Advance Practice Nurses

Michele Rubin, APN, Surgery
Associate Director, IBD Center

Ashley Bochenek Perkovic, APN, IBD Clinic
Jennifer Labas, APN, IBD Clinic
Alexandra Masching, APN, IBD Clinic
Katherine Sonnenburg, APN, IBD Transition Clinic

Clinic Nursing Team

Mary Ayers, RN, Director
Valerie Armstrong-Jones, RN
Linda Chaussey RN
Linda Kulig, RN
Sarah O’Rourke RN, BSN
Mary Ann Thompson, RN
Donna Nozicka RN, BSN
Nicole Thurston, RN
Leigh Anne Pena, RN

Research Nurses

Audrone Meiliulyte, RN, BSN

Clinical Trials

Kristi Kearney, RN
Clinical Trials Manager for Gastroenterology, Hepatology, Inflammatory Bowel Disease, Nutrition and Translational Research

Locations with IBD Services