--- title: Weight-Loss Procedures | Bariatric Institute description: Experience safe, minimally invasive weight loss surgery without hospitalization. Our expert bariatric surgeons offer outpatient procedures like sleeve gastrectomy and gastric bypass for fast recovery and lasting results. --- # Weight-Loss Procedures Our minimally invasive, outpatient weight-loss procedures offer a safer and more effective alternative to traditional open procedures. [Schedule Appointment ](https://bariatricinstitute.com/schedule-an-appointment?hsLang=en) ### Trusted Leaders ##### in Weight-Loss Surgery We have helped **thousands** of patients lose weight—you could be next. ![gastric-bypass](https://bariatricinstitute.com/hubfs/Bariatric-Institute/gastric-bypass.svg) ##### Gastric Bypass Gastric bypass is a popular weight-loss surgery designed to help people lose weight by significantly reducing the size of the stomach. This procedure is often recommended for people struggling with severe obesity who haven’t achieved lasting results through diet, exercise, or weight loss medication. By limiting food intake and nutrient absorption, gastric bypass supports effective, long-term weight loss and may improve overall health. [Learn More ](https://bariatricinstitute.com/procedures/gastric-bypass?hsLang=en) ![gastric-sleeve](https://bariatricinstitute.com/hubfs/Bariatric-Institute/gastric-sleeve.svg) ##### Gastric Sleeve Gastric sleeve surgery is a proven weight-loss surgery designed to help people with obesity achieve lasting results when diet, exercise, or weight loss medication have not been successful. The surgery removes a large portion of the stomach, creating a narrow, sleeve-shaped pouch that limits food intake and reduces hunger by lowering levels of appetite-regulating hormones. This dual effect supports sustainable weight loss and may improve overall health. [Learn More ](https://bariatricinstitute.com/procedures/gastric-sleeve?hsLang=en) ![revisional-surgery](https://bariatricinstitute.com/hubfs/Bariatric-Institute/revisional-surgery.svg) ##### Revisional Surgery Revisional weight-loss surgery is a corrective procedure performed to address complications or adjust a previous weight-loss surgery. It’s often recommended when the initial weight-loss surgery does not deliver the expected results, complications arise, or additional treatment is needed to enhance long-term success. Revisional surgery helps optimize weight loss outcomes and improve overall health after the original procedure. [Learn More ](https://bariatricinstitute.com/procedures/revisional-surgery?hsLang=en) ![gastric-band-repair](https://bariatricinstitute.com/hubfs/Bariatric-Institute/gastric-band-repair.svg) ##### Gastric Band Repair or Removal Gastric band repair or removal may be necessary if complications occur, such as band slippage, erosion, or insufficient weight loss. In some cases, the gastric band can be adjusted to improve results, while in others, removal of the gastric band is recommended. Many people choose to follow up with another weight loss surgery—like gastric sleeve surgery or gastric bypass—to achieve more effective, long-term weight loss results. [Learn More ](https://bariatricinstitute.com/procedures/gastric-band-removal?hsLang=en) ### Meet Our Surgeons Our surgeons are focused exclusively on helping people achieve lasting weight loss. They treat people with the same determination, empathy, and compassion as they treat their families. ![Randall Cornateanu, MD](https://bariatricinstitute.com/hs-fs/hubfs/Randall%20Cornateanu%20Headshot.jpg?width=408&height=229&name=Randall%20Cornateanu%20Headshot.jpg) ##### Randall Cornateanu, MD Bariatric Surgeon [888-927-3220](tel:888-927-3220) [View Bio ![cheveron-right](https://bariatricinstitute.com/hubfs/Bariatric-Institute/arrow-right.svg) ![cheveron-right](https://bariatricinstitute.com/hubfs/Bariatric-Institute/arrow-right-white.svg) ](https://bariatricinstitute.com/our-surgeons/randall-cornateanu?hsLang=en) ![Michael Tran, MD](https://bariatricinstitute.com/hs-fs/hubfs/Michael%20Tran%20Headshot.jpg?width=408&height=229&name=Michael%20Tran%20Headshot.jpg) ##### Michael Tran, MD Bariatric Surgeon [888-927-3220](tel:888-927-3220) [View Bio ![cheveron-right](https://bariatricinstitute.com/hubfs/Bariatric-Institute/arrow-right.svg) ![cheveron-right](https://bariatricinstitute.com/hubfs/Bariatric-Institute/arrow-right-white.svg) ](https://bariatricinstitute.com/our-surgeons/michael-tran?hsLang=en) ### Our Locations Our patients benefit from an expanding network of outpatient weight loss clinics, where board-certified, fellowship-trained bariatric surgeons deliver personalized care within hospitality-inspired care centers. ![Procedures-Corona](https://bariatricinstitute.com/hs-fs/hubfs/Procedures-Corona.jpg?width=634&height=357&name=Procedures-Corona.jpg) ##### Corona, CA Our Corona, CA, clinic is easy to reach—just minutes from the 91 and 15 freeways—and proudly part of our nationwide network of weight loss centers. [Corona Clinic ![right-arrow](https://bariatricinstitute.com/hubfs/Bariatric-Institute/right-arrow.svg) ![right-arrow](https://bariatricinstitute.com/hubfs/Bariatric-Institute/right-arrow.svg) ](https://bariatricinstitute.com/locations/corona?hsLang=en) ![long-beach-CA](https://bariatricinstitute.com/hs-fs/hubfs/Bariatric-Institute/long-beach-CA.jpg?width=422&height=238&name=long-beach-CA.jpg) ##### Long Beach, CA Our Long Beach, CA, clinic is easy to reach—just minutes from the 405 and 710 freeways—and proudly part of our nationwide network of weight loss centers. [Long Beach Clinic ![right-arrow](https://bariatricinstitute.com/hubfs/Bariatric-Institute/right-arrow.svg) ![right-arrow](https://bariatricinstitute.com/hubfs/Bariatric-Institute/right-arrow.svg) ](https://bariatricinstitute.com/locations/long-beach?hsLang=en) ![Mesa AZ](https://bariatricinstitute.com/hs-fs/hubfs/Mesa%20AZ.jpg?width=1250&height=833&name=Mesa%20AZ.jpg) ##### Mesa, AZ Our Mesa, AZ, clinic is easy to reach—just minutes from the 60 and 101 freeways—and proudly part of our nationwide network of weight loss centers. [Mesa Clinic ![right-arrow](https://bariatricinstitute.com/hubfs/Bariatric-Institute/right-arrow.svg) ![right-arrow](https://bariatricinstitute.com/hubfs/Bariatric-Institute/right-arrow.svg) ](https://bariatricinstitute.com/locations/mesa?hsLang=en) ## Schedule Appointment ##### Appointments in as little as 24 hours. Schedule your same/next-day in-person or telemedicine appointment with one of our medical experts. Appointments with our medical experts start on time so that you can quickly return to your day. [888-927-3220 ![phone-icon](https://bariatricinstitute.com/hubfs/Bariatric-Institute/phone-icon.svg) ![phone-icon](https://bariatricinstitute.com/hubfs/Bariatric-Institute/phone-icon.svg) ](tel:+1%20888-927-3220)