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Meet the Team    

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Dr. David Mack, MD, FRCPC
Professor of Pediatrics, University of Ottawa
Director, CHEO Inflammatory Bowel Disease Centre
Past Chief, Division of Gastroenterology, Hepatology and Nutrition, CHEO

image of Dr. Mack

Dr. David Mack completed his pediatric gastroenterology fellowship sub-specialty training at the Hospital for Sick Children, University of Toronto. After a decade at the University of Nebraska Medical Centre he returned to Ottawa in 2001 with a vision and drive to work hard to build and develop gastroenterology and hepatology care . Aligning with excellence,  staying focused on the goals, being consistent in optimism, patience, integrity, respectfulness, passion and communicating to those around defined the actions during his tenure. Over the years the Division has recruited strong members to expand its clinical expertise, increase diagnostic capabilities for the children and youth served by CHEO and moved forward with a strong research program.  While recently stepping down from Division Chief he will remain as Director of the CHEO IBD Centre and continue with translational research on the intestinal microbiome in IBD. Dr. Mack continues in leadership roles and with ongoing work in national organizations.

Dr. Eric Benchimol, MD, PhD, FRCPC
Associate Professor of Pediatrics and Epidemiology, University of Ottawa
Physician, CHEO Inflammatory Bowel Disease Centre
Division of Gastroenterology, Hepatology and Nutrition, CHEO

Dr. Benchimol's Pediatric Gastroenterology fellowship training was completed at the Hospital for Sick Children, University of Toronto after which he completed his PhD in Clinical Epidemiology. He joined the Division of Pediatric Gastroenterology, Hepatology and Nutrition at CHEO and became an Assistant Professor of Pediatrics at the University of Ottawa in 2009. His unique research interests involve studying Ontario's health administrative database and he is involved in various clinical studies. In 2012, Dr Benchimol received the prestigious Canadian Child Health Clinician-Scientist Program (CCHCSP) Career Development Award.

Dr. Nicholas Carman, BSc, MBBS, FRACP
Assistant Professor of Pediatrics, University of Ottawa
Physician, CHEO Inflammatory Bowel Disease Centre
Division of Gastroenterology, Hepatology and Nutrition, CHEO

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Dr. Carman completed his Paediatric Gastroenterology fellowship training at the Royal Children’s Hospital in Brisbane, Australia, and subsequently moved to Canada to undertake an advanced clinical research fellowship in Inflammatory Bowel Disease at the Hospital for Sick Children in Toronto in 2014. He recently joined the Division of Paediatric Gastroenterology, Hepatology and Nutrition at CHEO and became an Assistant Professor of Paediatrics at the University of Ottawa in 2017. Dr. Carman’s research interests involve clinical outcomes in patients with Inflammatory Bowel Disease. He also has a special interest in advanced endoscopic techniques in the management of paediatric patients with gastrointestinal disease. 

Nurse Case Managers

Nathalie Fournier, RN, BScN, ET

Nathalie has been part of the CHEO family since graduating from nursing in 1986. She joined the newly created Gastroenterology and Clinical Nutrition service in 1998, the same year she won an award for Excellence in Professional Practice. In addition, she is an Enterostomal Therapy nurse and has published through CAET’s magazine for youth with ostomies, entitled Body Talk. Nathalie and Mindy, Social Worker for the IBD Centre, started a support group at the Centre called - IBD Youth Who Underwent Ostomy Surgery; the support has now been opened up to all children and youth with IBD.

Chantal Shouldice, RN


Chantal graduated with Distinction from St. Lawrence College in Brockville in June of 1997. Chantal joined the GI team in 2007 with a primary clinical focus in IBD. In 2008, she initiated and participated with a multidisciplinary team which developed a hospital-wide teaching tool for self-injection of methotrexate and continues to teach IBD patients using that tool. Chantal has been involved in such initiatives as the development of patient teaching tools and the administration protocol for the Capsule Endoscopy testing in the Division.


Ruth Singleton, RN, CCRP - Head, Clinical Research Coordinators

After graduating from nursing, Ruth has enjoyed diverse nursing experiences in Canada and the U.S. It was during her time in Toronto that evidence-based nursing and research became a passion. Following that, her appreciation and respect of children was apparent when she worked tirelessly during her 11 years in the U.S where she was granted the Nebraska PTA State Life Award for outstanding service to children and youth. In 2006 the CHEO Research Institute recognized her for her work as Clinical Research Coordinator for Gastroenterology Research. This continued work ethic and enthusiasm is now focused on IBD Research.

Erin Beattie, MSc, PhD – Clinical Research Coordinator

Erin graduated with a BSc in Microbiology & Immunology and an MSc in Pharmacology from Dalhousie University, and a PhD in Laboratory Medicine & Pathobiology from the University of Toronto. Since completing her graduate work, she had been working as a research & development scientist and medical writer at a clinical research organization. Erin has recently joined our team as a research coordinator and brings a wealth of clinical trial experience and enthusiasm to the IBD Centre at CHEO.


James Butcher, BSc, PhD - Post Doctoral Researcher

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James graduated from the University of Ottawa with a BSc and PhD in Biochemistry. His previous research projects were primarily focused on the regulation of iron homeostasis in the gut pathogen Campylobacter jejuni with a particular emphasis on next-generation sequencing studies. He now brings his experience and expertise working with microbial pathogens and large complex datasets to studying the role of the gut microbiota in the development and pathogenesis of inflammatory bowel disease. James has received a 2 year Doctoral Award through the CIHR in partnership with the Canadian Association of Gastroenterology and Crohn's and Colitis Canada (supervisor: Dr. Mack).


Pauline Barbeau, BHSc, MSc - Clinical Research Coordinator

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Pauline graduated from the University of Ottawa’s Health Sciences Program in 2010 and completed her Master’s degree in Epidemiology. As a young professional entering the research field, she is elated to be a part of the IBD research team where the health of children affected by gastroenterological issues are of top priority.  As a research coordinator, she is excited to be involved with a variety of projects. Pauline's main focus is the Canadian Children Inflammatory Bowel Disease Network (CIDsCaNN).


Christine Figeys, RN, BScN - Clinical Research Assistant


Christine returns to the CHEO IBD Centre Research Team after a hiatus to obtain her BScN and RN. Her previous experiences in research and her drive for excellence has guided Christine to a seamless transition back with the Team. Christine strives to move the studies forward and to be an integral part of their success. With focus on the Intestinal Microbiome, Christine’s knowledge and attention to detail of data management makes her a valuable member of the Team. Her professionalism, empathy, attentiveness and forward thinking has ingratiated Christine with patients, families and colleagues.


Louise Lenz, IA, B.Sc.Inf. - Clinical Research Coordinator

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Louise has 40 years of healthcare experience in hospitals in Saskatchewan, Germany, Quebec and Ontario, having held a variety of positions such as staff nurse, clinical educator, assistant head nurse, head nurse, clinical manager and director. Continuing to step into the Nurse Case Manager(NCM) role to cover for the IBD NCM’s when needed, Louise maintains her primary goal of helping kids and families. Louise supports the CHEO IBD Centre Research projects and is our resident research interview specialist.

Danielle Birman, B.A. (Hons.), LLB - Research Coordinator

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Danielle joined the CHEO IBD Centre as aresearch coordinator in 2014. She helps to organize research using the Ontario Crohn’s and Colitis Cohort. She also facilitates research with the Canadian Gastro-Intestinal Epidemiology Consortium (CanGIEC), and other studies using health administrative data housed at the Institute for Clinical Evaluative Sciences. Danielle graduated from Osgoode Hall Law School in 1999.


Amanda Mack, BScN, BEd, OCT  -  Research Coordinator REDCap

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Amanda started volunteering in the Division of Gastroenterology in 2006 and continues on as Research Coordinator. Amanda is a strong asset to many of the research and clinical projects underway at the CHEO IBD Centre. Her current focus concentrates on development and implementation of REDCap databases for the CHEO IBD Centre. She is a valuable member of the team volunteering to take on multiple projects outside of her work to support the CHEO IBD Centre and CHEO.

Social Work

Kirstie Davis, MSW, RSW


Working with children, youth and their families at CHEO since 2004, Kirstie has dedicated her career to supporting children, youth, and family members who are living with a chronic illness. Understanding that a diagnosis of IBD can present challenges in all areas of a young person's life, Kirstie's goal is to help patients and families lead satisfying and fulfilling lives. A registered social worker since 2000 she is pleased to now have the opportunity to provide warmth, a listening ear, and practical solutions for patients of the Division of Pediatric Gastroenterology, Hepatology, and Nutrition.

Human Nutrition

Sydney Harris-Janz, BSc, RD


Sydney completed her Bachelor of Human Nutritional Sciences at the University of Manitoba (2009), and Dietetic Internship via the Ottawa Hospital Dietetic Internship Program (2010). She worked at the Canadian Centre for Agri-Food Research Health and Medicine at the St. Boniface Hospital Research Centre and also the Richardson Centre for Functional Foods and Nutraceuticals in Winnipeg. Sydney joins the Gastroenterology Team at CHEO in 2015 after working in several other clinical areas at CHEO including Hematology/Oncology, Immune Deficiency, and General Medicine.


Pharmacy Technician

 France Chiasson, Pharmacy Technician

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France Graduated from La Cité collégiale in 2013 under the pharmaceutical techniques program and obtained her pharmacy technician licence in 2014. She has been working in the pharmacy department at CHEO since 2013 and teaches sterile technique at La Cité collégiale part time since 2015.


Administrative Assistant

Susan Lemieux - Administrative Assistant

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Susan is a graduate of the Secretarial Science program at Vanier College in Montreal, Quebec and received her certificate in French Studies from Concordia University. She previously worked at The Montreal Children’s Hospital in administration before joining CHEO in March 2011. Susan is the Administrative Assistant for the Division of Pediatric Gastroenterology, Hepatology and Nutrition.


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