uOttawa General Surgery | Chirurgie Générale

Our Faculty

The Division of General Surgery

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There are 6 fully integrated clinical subspecialty units (each with 3-6 surgeons) working in a collaborative model of shared care of patients:

  • Core Surgery (ACS/Trauma/AWR)

  • Breast Surgical Oncology

  • Colorectal Surgery

  • Foregut and Bariatric Surgery

  • Hepatobiliary and Pancreatic Surgery

  • General Surgical Oncology

Clinical services at The Ottawa Hospital's three campuses (Civic Campus, General Campus, and the Riverside ambulatory care campus), as well as the Children's Hospital of Eastern Ontario (CHEO).

CHEO is the only Paediatric referral center for Eastern Ontario and Western Quebec:

  • A catchment population of over 600.000 children 18 yrs and under

  • From prenatal consults to patients up to 18 years of age.

  • Performs over 1200 surgical procedures annually

  • Sees over 3700 patients in the outpatient clinic annually

Learn more about our clinical programs below:

 
 

Core General Surgery

Acute Care Surgery | Trauma | Abdominal Wall Reconstruction

 
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Dr. Giuseppe Pagliarello, MD, msc, FRCSC

Division Head, Assistant Professor

Fellowship Training

  • Critical Care Medicine, University of Toronto

Residency Training

  • University of Toronto

Medical Doctorate

  • Queen's University

Other Degrees

  • Masters of Clinical Epidemiology, McMaster University

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Dr. maher Matar, MD, MHA, FRCSC

General Surgery Program Director

Fellowship Training

  • Trauma Surgery, University of Ottawa

  • Trauma and Acute Care Surgery, The Medical University of South Carolina

Residency Training

  • McGill University

Medical Doctorate

  • University of Ottawa

Other Degrees

  • Master of Health Administration, Telfer School of Management

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Dr. jacinthe Lampron, MD, MPH, FRCSC, FACS

Fellowship Training

  • Critical Care Medicine, University of Ottawa

Residency Training

  • Université Laval

Medical Doctorate

  • Université Laval

Other Degrees

  • Masters in Public Health, London School of Hygiene and Tropical Medicine

Research Interests:

  • Trauma Surgery

  • General Surgery

  • Critical Care

  • Quality of Care

  • Patient Safety

  • International Surgery

 
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Dr. Peter Glen, MD, MSc, FRCSC

Fellowship Training

  • Acute Care and Emergency Surgery, University of Alberta

Residency Training

  • General Surgery, University of Ottawa

Medical Doctorate

  • University of Ottawa

Other Degrees

  • Master of Science, Epidemiology, University of Ottawa

Dr. Nada gawad, md, maed, frcsc

Fellowship Training

  • Acute Care and Emergency Surgery , University of Alberta

Residency Training

  • University of Ottawa

Medical Doctorate

  • University of Toronto

Other Degrees

  • Masters of Medical Education, University of Ottawa

Research Interests

  • Surgical education, clinical-decision making skills, selection processes, equity, diversity and inclusion.


 

Hepatobiliary & Pancreatic Surgery

 
 
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Dr. Fady Balaa, MD, MEd, FRCSC

Dr. Balaa received his Bachelor of Science degree at the University of Ottawa and his MD degree at the University of Western Ontario. Dr. Balaa completed general surgery residency and fellowship in minimally invasive surgery at the University of Ottawa and fellowship in hepatobiliary surgery at the University of Pittsburgh Medical Center.

Dr. Balaa has an interest in medical education and medical leadership. He has completed a Masters degree in Medical Education through the Center for Medical Education at the University of Dundee. He is actively involved in curriculum development for surgical skills training in simulated environments. He is a nucleus member of the General Surgery Specialty Committee and is a member of the Examination Board in General Surgery for the Royal College of Physicians and Surgeons of Canada. He completed a term as program director for the division of general surgery. He also completed a term as the division chief for General Surgery at the University of Ottawa. Dr. Balaa is actively involved in promoting integrated models of care.

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Dr. Guillaume Martel, MDCM, MSc, FRCSC, FACS

Fellowship Training

  • Fellowship, HPB Surgery and Liver Transplantation, Université de Montréal

  • Fellowship, Hepatobiliary & Pancreatic Surgery, University of Ottawa

Residency Training

  • University of Ottawa

Medical Doctorate

  • McGill University

Other Degrees

  • Master’s of Science, Epidemiology, University of Ottawa

Research Interests

  • Hepatobiliary

  • Pancreatic Surgery

 
 

Dr. Kimberly Bertens, MD, MPH, FRCSC, FACS

Dr. Bertens completed medical school and General Surgery residency the University of Western Ontario. She then went on to complete a fellowship in Hepatobiliary surgery at Virginia Mason Medical Centre in Seattle, Washington. In addition Dr. Bertens has completed a Masters of Public Health with a focus in quantitative methods at the Harvard School of Public Health. Her research interests include the interface between sociodemographic factors and access to surgical care.

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Dr. Jad Abou-Khalil, MDCM, MSC, FRCSC

Dr. Abou-Khalil completed his medical school and residency at McGill University in Montreal before pursuing fellowship training in Hepato-Biliary and Pancreatic Surgery at Seattle’s Virginia Mason Medical Center. As a Hepatobiliary surgeon he is primarily interested in the surgical treatment of diseases of the liver, pancreas and biliary tree and has a special interest in laparoscopic and minimally invasive techniques. Armed with a master’s degree in epidemiology, Dr. Abou-khalil’s research focuses on surgical outcomes and the use of “big data” to address and inform questions relating to the care of surgical patients, specifically those undergoing surgery of the liver, pancreas and biliary tree.

 

Bariatrics & Foregut

 
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Dr. Joseph Mamazza, MDCM, FRCSC, FACS

Residency Training:

  • McGill University

Medical Doctorate:

  • McGill University MDCM

Other:

  • Member of the North American Fellowship Council 

Research Interests:

  • Minimally Invasive Surgery

  • Gastrointestinal and Colorectal Disease

  • Bariatric Surgery

  • Adrenal Surgery

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Dr. Amy neville, MDCM, MSC, FRCSC

Fellowship Training

  • Bariatric Surgery, McGill University

  • Advanced Foregut and Laparoscopic Surgery, McGill University

Residency Training

  • McGill University

Medical Doctorate

  • McGill University

Other Degrees

  • Master of Epidemiology, McGill University

 
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Dr. Nicole Kolozsvari, MD, MSc, FRCSC

Fellowship Training

  • Bariatric Surgery, McGill University

Residency Training

  • General Surgery, McGill University

Medical Doctorate

  • University of Western Ontario

Other Degrees

  • Master of Science (Experimental Surgery), McGill University

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Dr. Caolan Walsh, MD, MBA, FRCSC

Fellowship Training

  • Bariatric Surgery, Institut universitaire de cardiologie and de pneumologie de Québec (IUCPQ), Université de Laval, Québec City, QC

  • Minimally Invasive and Foregut Surgery, VU University Medical Center - vUMC site, Amsterdam, Netherlands

  • Bariatric and Minimally Invasive Surgery, University of Ottawa, Ottawa, ON

 Residency Training

  • General Surgery, Dalhousie University, Halifax, NS

Medical Doctorate

  • Université de Sherbrooke - Moncton Campus, Moncton, NB

Other Degrees

  • Masters of Business Administration (MBA), Telfer School of Management

 

 
 
 

Breast Surgical Oncology

 
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Dr. Angel Arnaout, MD, MSC, MBA, FRCSC, FACS

Dr. Angel Arnaout is a Breast Surgical Oncologist at the Ottawa Hospital, Clinical Investigator at the Ottawa Hospital Research Institute, and Assistant Professor at the University of Ottawa. In addition to her clinical and scientific research interests, her passion as a surgeon is to aggressively treat breast cancer but with minimal side effects and cosmetic detriment, recognizing the importance of body image on the breast cancer patient. As such is also the pioneer in Oncoplastic Surgery in Ottawa; a new minimally invasive breast surgical technique that combines breast cancer surgery with plastic surgical techniques.

Fellowship training

  • Breast surgical oncology, University of Toronto

Residency Training

  • University of Toronto

Medical Doctorate

  • Dalhousie University

Other Degrees

  • Masters of Science, University of Toronto

  • Masters of business administration, University of Toronto

Research Interests:

  • Implementation of the latest surgical techniques in breast cancer surgery

  • Development of strategies that facilitate greater access and timeliness of care for breast cancer patients

  • Investigation of translational biomarkers in breast cancer

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Dr. Erin Cordeiro, MD, MSC, FRCSC

Fellowship Training:

  • Fellowship, Breast Surgical Oncology, University of Toronto

Residency Training:

  • Dalhousie University

Medical Doctorate:

  • Dalhousie University

Other Degrees:

Master of Science, Clinical Epidemiology, University of Toronto

Clinical Interests:

  • Optimizing the treatment of high-risk benign breast disease

  • Clinical epidemiology of breast cancer and outcomes of cancer treatment

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DR. Dennis Pitt, MD, MED, FRCSC

Fellowship Training

  • University of Western Ontario

Residency Training

  • University of Western Ontario

Medical Doctorate

  • MD, Queens University

Other Degrees

  • Masters of medical education, University of Dundee

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DR. LISA FINDLAY-SHIRRAS, MBBS, MSc, FRCSC

Fellowship Training

  • Breast Surgical Oncology, University of Ottawa

Residency Training

  • University of Manitoba

Medical Doctorate

  • University of Queensland, Australia

Other Degrees

  • Masters of Science, University of Manitoba

Research Interests

  • Breast Cancer

  • Oncoplastic breast surgery

  • Population and public health

 

Surgical Oncology

 
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Dr. Rebecca Auer, MD, MSc, FRCSC, FACS

Fellowship Training

  • Surgical Oncology, Memorial Sloan-Kettering Cancer Center, New York

Residency Training

  • University of Ottawa

Medical Doctorate

  • Queen's University

Other Degrees

  • Masters in biochemistry and molecular biology, University of Ottawa

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Dr. Carolyn Nessim, MD, MSC, FRCSC, FACS

Fellowship Training

  • Surgical Oncology - Peter MacCallum Cancer Centre - Melbourne, Australia

  • Surgical Oncology, University of Toronto

Residency Training

  • University of Montreal

Medical Doctorate

  • University of Montreal

Clinical Interests

  • Improvement and assessment of quality indicators in cancer surgery (Melanoma Sarcoma and Gastric Cancer)

  • Large database multi-institutional collaborative clinical research on Sarcoma, Melanoma and Gastric Cancer

  • Investigation of oncolytic viruses and immunomarkers in melanoma and sarcoma which are prognostic and predictive of treatment efficacy

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Dr. Shaheer Tadros, MD, FRCSC, FACS

Active Staff at TOH division of General surgery with privileges in General Surgery. Extensive experience in MIS and Upper and Lower GI endoscopy. Extensive experience in a wide variety of General Thoracic procedures including Pulmonary and esophageal surgery, thoracoscopic diagnostic and therapeutic procedures.

Appointed Program Director for Division of General Surgery Residency Program, University of Ottawa School of Medicine, Jan 2014. Lecturer at the University of Ottawa Faculty of Medicine involved in the teaching of medical student, OSCE and member of the undergraduate educational committee responsible for the Ambulatory rotation at the Riverside site.

 

Dr. Brittany Dingley, MD, MPH, FRCSC

Fellowship Training

  • Surgical Oncology, University of Ottawa

Residency Training

  • University of Calgary

Medical Doctorate

  • University of Calgary

Other Degrees

  • Master of Public Health, Harvard University

Clinical Interests

My personal research program focuses around advanced cancer care, both with peritoneal malignancy but also palliative surgery. We are currently working to understand the Canadian context in peritoneal malignancy and will be working towards a Pan Canadian Database. This will integrate synoptic reporting and AI to achieve prospective data collection. We are creating a palliative surgical program which will be a first of its kind in Canada, and will serve to provide guidance to other sites interested in creating something similar.I am also involved in a surgical clinical trial in melanoma and have a large merkel cell carcinoma database with Dr Carolyn Nessim.

DR. SAMEER APTE, MD, MSC, FRCSC, FACS

Fellowship Training

  • Surgical Oncology - University of Ottawa

Residency Training

  • University of Alberta

Medical Doctorate

  • McGill University

Dr. Robin Boushey, MD, PhD, CIP, FRCSC

Fellowship Training

  • Colorectal Surgery, Lahey Clinic, Burlington, Massachussetts

  • Minimally Invasive Surgery, University of Toronto

Residency Training

  • University of Toronto 2003

Medical Doctorate

  • University of Toronto

Other Degrees

  • PhD, University of Toronto

Colorectal Surgery

Civic Campus

 
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Dr. Lara Williams, MD, MSC, FRCSC

Fellowship Training

  • Colorectal and Minimally Invasive Surgery, University of Ottawa

Residency Training

  • Dalhousie University

Medical Doctorate

  • University of Western Ontario

Other Degrees

  • Masters of medical sciences, Dalhousie University

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Dr. Husein Moloo, MD, MSC, MPH, FRCSC

Fellowship Training

  • Minimally invasive surgery, University of Ottawa

  • Colorectal surgery, University of Minnesota

Residency Training

  • University of Western Ontario

Medical Doctorate

  • University of Western Ontario

Other Degrees

  • Masters of Epidemiology, University of Ottawa

  • Masters of Public Health, Harvard University

 
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Dr. Isabelle Raiche, MD, MaeD, FRCSC

Fellowship Training

  • Colorectal Surgery, Washington’s University St Louis

  • Minimally Invasive Surgery, University of Ottawa

Residency Training

  • Université Laval

Medical Doctorate

  • Université Laval

Other Degrees

  • Masters of Education, University of Ottawa

Dr. Lisa Zhang MD, MSC, FRCSC

Fellowship Training

  • Colorectal Surgery, University of Ottawa

Residency Training

  • Queen’s University

Medical Doctorate

  • University of Toronto

Other Degrees

  • Quality Improvement and Patient Safety Leadership Program

  • Master of Science (Dist) Global Health Science and Epidemiology

 

 
 

Colorectal Surgery

Ambulatory care

 
 
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Dr. Martin Friedlich, MD, MED, FRCSC

Fellowship Training

  • Colorectal Surgery, University of Toronto

Residency Training

  • General Surgery, University of Alberta

Medical Doctorate

  • University of Toronto

Other Degrees

  • Masters of Surgical Education, University of Toronto

 
 
 

Pediatric Surgery

 

Dr. Gil Eamer, MD, MSc, FRCSC

Fellowship Training

  • Pediatric General Surgery, McMaster University

Residency Training

  • University of Alberta

Medical Doctorate

  • University of British Columbia

Other Degrees

  • Clinician Investigator Program

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DR. Kyle Cowan, MD, pHD, FRCSC

Dr. Cowan is a pediatric general surgeon at CHEO, a scientist at the CHEO Research Institute, and an associate professor in the Departments of Surgery and Cellular and Molecular Medicine at the University of Ottawa. Dr. Cowan completed a Ph.D. in cardiovascular research under the supervision of Dr. Marlene Rabinovitch at the Hospital for Sick Children, Department of Laboratory Medicine and Pathobiology, University of Toronto where he studied the pathophysiology of primary arterial hypertension and approaches to its reversal. Dr. Cowan then started medical studies at the University of Toronto, which was followed by a 5-year general surgery residency at the University of Western Ontario. During his residency, Dr. Cowan continued his basic science training with the completion of a post-doctoral fellowship in the area of cell communication (connexins and pannexins) and tumour biology in the laboratory of Dr. Dale W. Laird at the University of Western Ontario, Department of Anatomy and Cell Biology. After finishing his general surgery residency and a postdoctoral fellowship in 2009, Dr. Cowan completed a pediatric surgery fellowship (2009-2011) at CHEO. His research focuses on the role of pannexins in skeletal muscle health and muscle dystrophy, as well as in pediatric cancers such as rhabdomyosarcoma and neuroblastoma. Dr. Cowan is the recipient of numerous awards, including the Canadian Institute of Health Research and the Canadian Society for Clinical Investigation joint Resident Research Award, Physician Services Incorporated Foundation Resident Research Award, and the American College of Cardiology Young Investigator's Award. Clinical interests: Pediatric general and thoracic surgery, Neonatal Surgery, Translational Research, Precision Oncology Research

 
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DR. Ahmed Nasr, MD, MSC, FRCSC

Dr. Nasr completed his medical studies, general surgery training, and a Ph.D. in Egypt. Upon his arrival in Canada, he pursued and completed his Canadian medical training in General Surgery at the University of Toronto, where he also completed his Pediatric Surgical Fellowship as well as his NICU Fellowship. During this time, he obtained a Masters in Clinical Epidemiology. Dr. Nasr joined CHEO in September 2011. Dr. Nasr is currently the Medical Director for the Trauma Program and is a pediatric surgeon in the Division of Pediatric Surgery at CHEO. Dr. Nasr’s academic and research focus include minimally invasive surgery, pediatric trauma, and evidence-based medicine. Dr. Nasr is the Principal Investigator and principal founder of the Canadian Association of Pediatric Surgeons Evidence-Based Resource, a knowledge base that provides and promotes evidence-based practice amongst pediatric surgeons on a global level, thereby ensuring children and youth receive the best surgical care globally. As the Chair of the Canadian Association of Pediatric Surgeons Research Committee, he is proactive with research and has over 80 peer-reviewed publications.

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Dr. Marcos Bettolli, MD, FRCSC

Dr. Bettolli completed his medical studies and earned his Medicinae Doctor degree at the Catholic University of Cordoba, Argentina. He completed his residency in Pediatric Surgery at the Hospital Infantil de la Municipalidad de Cordoba and obtained his degree of Pediatric Surgeon at the National University of Cordoba, Argentina. In 2004, Dr. Bettolli arrived in Canada as the Clinical Research Fellow at CHEO with a scholarship granted from the University of Ottawa. The focus of his research is in basic science - gastrointestinal dysmotility and Minimally Invasive Surgery (MIS). During his Fellowship of 3 years, he developed two advanced immunostaining histopathology procedures for post-operative and intraoperative assessment of Hirschsprung's Disease pathology. He was then recruited as Assistant Professor at CHEO. His career focuses are centered on MIS, chest wall deformities, and teaching. Today, CHEO is recognized as having one of the strongest MIS Pediatric Surgery Programs across Canada and is a referral center for chest wall deformities. In 2012, Dr. Bettolli introduced Bracing Therapy, which is a non-operative treatment for Pectus Carinatum, to CHEO and the Ottawa region. In the same year, Dr. Bettolli became one of the pioneers in non-invasive correction for Pectus Excavatum. By introducing and prescribing the Eckhart Klobe vacuum bell, Dr. Bettolli has brought CHEO to the forefront as a leader with this alternative treatment. In 2010, Dr. Bettolli became the educational leader for the Pediatric Surgery undergraduate program at the University of Ottawa. As the educational leader, he is involved in teaching, development, and organization of the Undergraduate Pediatric Surgery curriculum at all levels. In 2014, he was promoted to Associate Professor at the University of Ottawa and earned his distinction as a Fellow of the Royal College of Surgeons of Canada (FRCSC). Clinical interests: Minimally invasive surgery, Chest wall deformities, Quality Improvement Pediatric Program (NSQIP)

Dr. justyna wolinska, MD, FRCSC

Fellowship Training

  • Pediatric General Surgery, University of Toronto

Residency Training

  • University of Toronto

Medical Doctorate

  • Jagiellonian University Medical College

 

 

Additional Division Staff

 
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Dr. Janelle Rekman, MD, MAED, FRCSC

Fellowship Training

  • Virginia Mason Medical Center in Seattle, WA - HPB Fellowship 

Residency Training

  • University of Ottawa

Master degree:

  • Masters of Arts in Education, University of Ottawa 

Medical Doctorate

  • University of Western Ontario 

Clinical & Research Interests

  • Community Surgery

  • HPB

  • Surgical education including assessment

  • Technical skills development

  • Ongoing continuing surgical education for staff surgeons