Your Weight Loss Journey, Personalized
Bariatric Surgery in West Chicago with Dr. El Djouzi
"True Personalized Care" - Where Your New Life Begins
Premier Bariatric Institute offers compassionate surgical expertise and comprehensive support for lasting weight loss transformation across Illinois.




Meet Dr. Sofiane El Djouzi
Dr. Sofiane El Djouzi brings exceptional expertise to every patient's weight loss journey. As a dual board-certified surgeon in General Surgery and Obesity Medicine, he has successfully performed over 2,400 bariatric procedures with outstanding outcomes.
Fellowship-trained and ranking in the top 1% of bariatric surgeons nationwide, Dr. El Djouzi combines advanced surgical techniques with genuine compassion. His philosophy centers on "true personalized care" - creating customized treatment plans that address each patient's unique needs and goals.
With over 15 years of experience and memberships in ASMBS and FACS, Dr. El Djouzi stays at the forefront of bariatric medicine, ensuring patients receive the most effective and safe treatments available.

Weight Loss Surgery Options
Gastric Sleeve
Remove 80% of the stomach to reduce hunger hormones and limit food intake for significant weight loss.
Learn more about Gastric Sleeve surgery →Gastric Bypass
Create a small stomach pouch and reroute intestines for powerful weight loss and metabolic benefits.
Learn more about Gastric Bypass surgery →Revision Surgery
Correct or enhance previous weight loss surgeries to restore effectiveness and improve outcomes.
Learn more about Revision Surgery →Nutrition & Support
Comprehensive pre and post-surgery nutrition counseling, lifestyle coaching, and long-term follow-up care.
Learn more about our Support Program →The Premier Difference
Personalized Care
One-on-one consultations and customized surgical plans tailored to your unique needs and goals.
Experienced Surgeon
Dr. El Djouzi's 15+ years of bariatric expertise and board certification ensure the highest quality care.
Comprehensive Support
Pre-op education, nutrition counseling, and long-term follow-up for sustainable success.
Proven Results
Average 65-75% excess weight loss with improved health outcomes. Individual results may vary.
Patient Success Stories


"Dr. El Djouzi changed my life. I lost 120 pounds after my gastric sleeve surgery and finally feel like myself again. The support from his team has been incredible."
Lost 120 lbs | Gastric Sleeve


"After struggling with diabetes for years, my gastric bypass surgery gave me my health back. I'm off all medications and have maintained my weight loss for 2 years."
Lost 95 lbs | Gastric Bypass


"The personalized care at Premier Bariatric Institute made all the difference. I've lost 85 pounds and gained so much confidence. Best decision of my life!"
Lost 85 lbs | Gastric Sleeve
Frequently Asked Questions
You may qualify for bariatric surgery if your BMI is 40 or higher, or 35+ with weight-related health conditions such as diabetes, sleep apnea, or high blood pressure. Schedule a consultation with Dr. El Djouzi to discuss your specific situation and determine the best treatment option.
Most patients return to work within 2-3 weeks and resume normal activities within 4-6 weeks. Recovery time varies by procedure type and individual factors. Our minimally invasive techniques and enhanced recovery protocols help minimize downtime and discomfort.
Many insurance plans cover bariatric surgery when medical criteria are met. Our experienced insurance team will verify your benefits, help navigate the approval process, and work with your insurance company to maximize coverage. We also offer financing options.
We combine Dr. El Djouzi's exceptional surgical expertise with truly personalized care. Our comprehensive program includes nutritional counseling, behavioral support, and long-term follow-up. With MBSAQIP accreditation and Center of Excellence status, we maintain the highest standards of safety and quality.
Weight loss varies by procedure and individual factors. On average, gastric sleeve patients lose 60-70% of excess weight, while gastric bypass patients lose 70-80%. Success depends on following the post-surgery program including diet, exercise, and lifestyle changes. Results vary by individual.
Check Your Eligibility
Use our BMI calculator to see if you may qualify for weight loss surgery
Calculate Your BMIGet Started Today
Request a Consultation
Contact Information
2821 83rd Street
Darien, IL 60561
Fax: 773-365-1515
Monday - Friday: 9:00 AM - 5:00 PM
Bolingbrook, Naperville, Darien, Downers Grove,
and surrounding West Chicago suburbs