What We Do

Our goal is to help our patients achieve long-term weight loss and improve their quality of life and day-to-day functioning through surgery and sustained lifestyle changes. Our comprehensive program offers medical and surgical care, nutritional education and counseling and psychological and social support.

Patients who are interested in and may be eligible for bariatric surgery attend a series of assessment and education sessions to help our team determine if the patient will be a suitable candidate for bariatric surgery. Patients who undergo bariatric surgery also receive close follow-up care over a period of at least 1 year after their surgery. All services are covered by OHIP.

All patients referred to our clinic by the Ontario Bariatric Registry come to Toronto ​Western Hospital​ for assessment and education appointments.

Types of Surgery Performed

  • Gastric bypass (also called Roux-en-Y gastric bypass): Creating a small stomach pouch out of a portion of the stomach and attaching it directly to the small intestine.
  • Sleeve gastrectomy (also called vertical sleeve gastrectomy): Creating a small stomach pouch without affecting the small intestine. We perform this procedure in specific situations, as determined by your surgeon.

We perform both of these procedures using laparoscopic or minimally invasive surgery that involves small incisions in the abdomen.​​​​

How to Prepare

Learn more about what you can expect when you have a clinic appointment.​

 Materials and Resources to Help You

Resources from the Patient & Family Education Program

Visit our Health Information section to find dedicated resources to help you understand your condition. Find the information you're looking for.

Helpful Resources

General Information

All resources are in PDF  format unless otherwise indicated.


All resources are in PDF  format unless otherwise indicated.

Nursing Appointment

Please complete the following and email to prior to your appointment.

All resources are in PDF  format unless otherwise indicated.

Surgeon's Clinic

All resources are in PDF  format unless otherwise indicated.

Nutrition Essentials

All resources are in PDF  format unless otherwise indicated.



Our Video Library

 Meet Our Team

Bariatric team  

​​​​​​​​​​​​​​​To achieve long-term weight-loss success, patients may require help in several areas of their life. For this reason, our team is interdisciplinary, including surgeons, nurse practitioners, registered nurses, registered dietitians, social workers, psychologists, psychometrists, psychiatrists, and research and administrative staff. Each team member has unique expertise that may be beneficial to your recovery and health. 

Surgical Director: Dr. Tim Jackson ​​

Psychosocial Program Director: Dr. Sanjeev Sockalingam

Clinical Director: Silvi Groe​

Medical Director: Dr. Satya Dash

Program Manager: Sandra Robinson 




  • Dr. Susan Wnuk, PhD, C.Psych
  • Dr. Sarah Royal, PhD, C.Psych

Psychometrist & Psychotherapist:

  • Chau Du, MSc, RP

Social Workers:

  • Annie Basterfield, MSW, RSW
  • Rebecca Kirsh, MSW, RSW ​
  • ​Julia Skiadaresis, MSW, RSW
  • Anna Wallwork,  MSW, RSW​

​Nurse Practitioners:

  • Natasha Briggs, RN, MN, NP-Adult, GNC (C), ONC (C)
  • Patti Kastanias, RN, MSc, NP-Adult
  • Karyn Mackenzie, RN, MN, NP-Adult, CPN(C)
  • Sandra Robinson, RN, MN, NP-Adult
  • Wei Wang, RN, MN, NP-Adult, CDE, CBE

Registered Nurses: 

  • ​Sharon Nam Dobbs, RN
  • Lorraine Whitehead, RN, MN​

Registered Dietitians:

  • Lorraine Gougeon, BA
  • Laura Scott, RD, CBE
  • Katie Warwick, RD
  • Mary Weiland, RD

Data Support: Doreen LeBlanc, HBSc, MSc ​

Data Entry Clerks:

  • ​Petra De Andrade​
  • Yvetta Lukacova, BA, PhD​

Administrative Assistant: Sharon Douglas

W​ard Clerks:

  • Andrew Co​le ​
  • Andrew Douglas
  • Patrice Harriott
  • Maria Lenard
  • Mitchie Pamonag
  • Melissa Sabado
  • Rhodora Salazar
  • Jamelila Thane​