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26 Years
experience
Your Trusted Bariatric Surgery Partner in Perth
Mercy Bariatrics is a leading specialist provider of bariatric surgery in Perth, Western Australia, with over two decades of experience. Our multidisciplinary team combines surgical expertise, nutritional guidance, and postoperative support to deliver sustainable weight loss solutions. Since pioneering gastric sleeve surgery in Australia, we have performed over 2,000 procedures, achieving proven results twice the national average. Our approach integrates preoperative assessments, advanced surgical techniques, and lifelong patient education to address obesity as a chronic disease.

We prioritize personalized care, utilizing detailed patient outcome records to refine our methods and ensure optimal results. Our commitment to innovation is evident in our smaller bougie sizes for enhanced weight loss durability and specialized programs like Success Habits for long-term support. With a focus on transparency, we openly share our clinical outcomes and collaborate with international organizations to maintain the highest standards of care.
Services
Gastric Sleeve Surgery Gastric Band Support Revisional Surgery Diabetes Treatment Weight Regain Management
Details
  • Year established: 2000
Highlights and features
  • Proven gastric sleeve results twice the national average over 6 years
  • Multidisciplinary team approach with surgeons, dietitians, and exercise physiologists
  • Over 20 years of specialized experience in bariatric surgery
  • Personalized follow-up programs like Success Habits for long-term success
  • Smaller bougie sizes for enhanced weight loss durability
Services
Gastric Sleeve Surgery
Gastric Sleeve Surgery removes 80% of the stomach, creating a smaller, banana-shaped pouch. This procedure reduces hunger hormone production while maintaining normal digestion. Patients experience significant weight loss, with 65-90% excess weight loss within the first year. Our use of smaller bougie sizes enhances long-term results, and our team's expertise ensures minimal complications.
Gastric Band Support
Gastric Band Support specializes in adjusting, repairing, or removing adjustable gastric bands. We address malfunctioning bands through fill adjustments, re-education, or revisional surgery. Our Back on Track program helps patients struggling with weight regain after band procedures, offering personalized dietary and behavioral guidance to restore effectiveness.
Revisional Surgery
Revisional Surgery addresses failed weight loss procedures through re-sleeving, bypass conversions, or band removals. We assess individual cases to determine optimal solutions, such as converting bands to sleeves or addressing post-surgical complications. Our approach combines technical expertise with long-term follow-up to maximize sustainable outcomes.
Diabetes Treatment
Diabetes Treatment through bariatric surgery achieves remission in 60%+ of type 2 diabetes cases. Sleeve gastrectomy improves insulin sensitivity, often reducing medication needs within months. Our program combines surgical intervention with ongoing metabolic monitoring to address obesity-related diabetes comprehensively.
Weight Regain Management
Weight Regain Management addresses post-bariatric weight regain through dietary analysis, capacity testing, and behavioral retraining. Using tools like the rice cream test, we identify physiological and behavioral factors. Our Back on Track program offers structured support to restore weight loss momentum through personalized interventions.
People
Dr. Leon Cohen
Bariatric Surgeon and Medical Director
Dr. Leon Cohen has performed over 1,400 sleeve gastrectomies since 2004. His research on bougie size optimization improved long-term weight loss outcomes. He leads Mercy Bariatrics' surgical team, focusing on durable solutions for morbid obesity.
Colleen Cook
President
Colleen Cook founded Bariatric Support Centres International in 2000. As a weight-loss surgery patient since 1995, she authored 'The Success Habits of Weight Loss Surgery Patients,' contributing to our postoperative education programs.
Questions
What makes Mercy Bariatrics different from other bariatric providers?
Our proven outcomes, twice the national average for gastric sleeve durability, combined with a multidisciplinary team approach and lifelong support programs like Success Habits™.
Do you offer support for patients with previous gastric bands?
Yes, we specialize in gastric band adjustments, removals, and revisions. Our Back on Track program helps patients struggling with band effectiveness or weight regain.
How do you handle weight regain after bariatric surgery?
We conduct comprehensive assessments using tools like the rice cream test, address behavioral factors, and offer revisional options while emphasizing our structured postoperative support programs.
Can bariatric surgery help with type 2 diabetes?
Yes, 60%+ of diabetic patients achieve remission within 3-6 months post-sleeve gastrectomy. Our metabolic surgery approach improves insulin sensitivity and reduces medication dependence.
What follow-up care do you provide?
We offer Success Habits™, a 4-week postoperative program, metabolic reviews at key intervals, and lifelong dietary/exercise guidance through our dietitians and exercise physiologists.