SIPS Weight Loss Surgery: Should You Consider It with the Best SIPS Surgeons in New York

April 1, 2026 | Weight Loss Surgery

For patients who have struggled to achieve weight loss through diet, exercise, or even previous bariatric surgery, SIPS weight loss surgery offers a powerful solution that combines maximum effectiveness with fewer complications. This advanced bariatric procedure, Stomach Intestinal Pylorus Sparing surgery, has emerged as one of the most promising options for those dealing with severe obesity and related health conditions like type 2 diabetes, sleep apnea, and high blood pressure.

New York stands at the forefront of SIPS surgery, home to surgeons who pioneered this innovative weight-loss procedure and to medical centers with extensive experience performing it. This blog will guide you through understanding what SIPS surgery involves, determining whether you’re a good candidate, and finding the best SIPS surgeons in New York to support your weight loss journey.

Key Takeaways

SIPS surgery preserves the pyloric valve, offering better nutrient absorption and fewer complications than traditional duodenal switch or gastric bypass surgery
Ideal candidates typically have a body mass index over 35 with obesity-related comorbidities or a BMI over 40 without additional conditions
New York offers world-class SIPS surgeons at leading medical centers
The procedure combines sleeve gastrectomy with intestinal bypass for significant weight loss results, often 35-40% total body weight loss within 12 months
Choosing an experienced, board-certified bariatric surgeon with high surgical volume is crucial for optimal outcomes and faster recovery

Understanding SIPS Weight Loss Surgery

SIPS surgery, also known as Single Anastomosis Duodeno-Ileal Bypass or SADI-S, represents a refined approach to metabolic surgery that addresses both stomach size and how the body absorbs nutrients. For those just starting to explore surgical options, learning more about the SIPS procedure for beginners can provide useful context before moving forward. Developed around 2013 by Dr. Daniel Cottam and Dr. Mitchell S. Roslin at Lenox Hill Hospital in New York, this surgical procedure was designed to capture the benefits of the traditional duodenal switch while reducing potential risks.

The SIPS procedure involves two key components. First, the surgeon removes approximately 80% of the stomach through a sleeve gastrectomy, creating a smaller stomach pouch that limits food intake and reduces production of ghrelin, the hormone responsible for hunger signals. Second, the surgeon creates a connection between the duodenum (the upper part of the small intestine) and a lower section of the intestine, bypassing a significant portion of the digestive system.

Clinical studies demonstrate remarkable outcomes with this bariatric procedure. Research shows patients can expect approximately 35.6% total body weight loss at 12 months, with some studies reporting excess weight loss exceeding 80% at 24 months. Beyond helping patients lose weight, SIPS surgery promotes weight loss of related health conditions, studies indicate type 2 diabetes remission rates exceeding 90%, GERD resolution around 87%, and significant improvements in sleep apnea and hyperlipidemia.

What distinguishes SIPS from other weight loss surgeries is the preservation of the pyloric valve, the muscular ring that controls how food empties from the stomach into the small intestine. This preservation results in fewer complications like dumping syndrome, which commonly affects gastric bypass patients, while maintaining better nutrient absorption throughout the digestive process.

How SIPS Differs from Other Weight Loss Surgeries

Understanding how SIPS compares to other bariatric procedures helps patients make informed decisions about their weight loss goals.

SIPS vs. Sleeve Gastrectomy: While both procedures reduce stomach size, the gastric sleeve is purely restrictive; it only limits food intake. SIPS adds an intestinal bypass component, leading to greater weight loss and better glycemic control. Most patients who undergo SIPS achieve more weight loss than those who receive sleeve gastrectomy alone, particularly those with higher starting BMIs.
SIPS vs. Gastric Bypass Surgery: Traditional Roux-en-Y gastric bypass requires two intestinal connections (anastomoses), increasing the risk of internal hernias and ulcers. SIPS uses only a single anastomosis, simplifying the anatomy and reducing post-surgical complications. Additionally, because SIPS preserves the pyloric valve, patients experience significantly less dumping syndrome, the uncomfortable rapid gastric emptying that causes nausea, sweating, and diarrhea after eating.
SIPS vs. Biliopancreatic Diversion with Duodenal Switch: The traditional duodenal switch delivers maximum weight loss but carries higher risks of nutritional deficiencies and requires two anastomoses. SIPS approaches the effectiveness of this procedure with a simpler surgical approach, fewer complications, and a better safety profile. The minimally invasive approach used in SIPS typically results in faster healing and return to normal activities.

Should You Consider SIPS Surgery

Determining whether you’re a good candidate for SIPS surgery requires a comprehensive evaluation of your body mass index, overall health, and readiness for lifestyle changes.

BMI Requirements: Most insurance policies and medical guidelines consider patients with BMI ≥40 kg/m² eligible for bariatric surgery regardless of comorbidities. Those with BMI ≥35 kg/m² typically qualify when they have at least one severe obesity-related condition, such as type 2 diabetes, obstructive sleep apnea, or high blood pressure. Some programs now consider patients with a BMI of 30-34.9 who have uncontrolled comorbidities despite proven methods of non-surgical intervention.
Health Conditions That Respond Well: SIPS surgery shows that those with metabolic conditions achieve remarkable improvements. Type 2 diabetes remission rates exceed 90% in many studies, making this an excellent option for bariatric patients struggling with blood sugar control. Other conditions that respond well include hyperlipidemia, hypertension, GERD, and obstructive sleep apnea.
Revision Surgery Candidates: Many patients who experienced insufficient weight loss or weight regain after sleeve gastrectomy or gastric bypass may benefit from conversion to SIPS. In these situations, patients often have questions about whether bariatric surgery can be done twice as they consider revisional options and next steps. Studies show patients converting from a gastric sleeve achieve approximately 32.9% total body weight loss at 12 months post-conversion, demonstrating the procedure’s effectiveness as a revision surgery.
Lifestyle Readiness: Success with SIPS requires commitment to healthy habits, including protein-rich dietary intake, lifelong vitamin and mineral supplementation, and regular follow-up visits with your care team. Patients must be prepared to manage potential changes in bowel habits and maintain a healthy lifestyle to optimize long-term results.

Common Mistakes to Avoid When Choosing Weight Loss Surgery

Selecting the right weight loss procedure requires careful consideration. Here are mistakes patients often make:

Choosing based on minimal operative risk alone: While safety matters, selecting a purely restrictive procedure like gastric sleeve when your health conditions would benefit more from the metabolic effects of SIPS may leave you with suboptimal results.
Rushing into surgery without proper evaluation: The evaluation process exists to ensure you’re medically and psychologically prepared. Skipping a comprehensive evaluation increases potential risks and may lead to poor outcomes.
Ignoring surgeon experience with SIPS specifically: A bariatric surgeon experienced with gastric bypass may not have the same expertise with SIPS. That is why understanding how to choose a bariatric surgeon is an important part of preparing for a safe procedure and a strong, long-term outcome. Verify your surgeon’s specific volume and outcomes with the SIPS procedure.
Underestimating post-surgical care requirements: SIPS involves malabsorption, meaning your body absorbs nutrients differently. Patients who fail to commit to supplementation and monitoring risk nutritional deficiencies that can cause serious health problems.
Selecting a center without robust aftercare: The best outcomes come from programs with multidisciplinary teams including nutritionists, endocrinologists, and psychological support for ongoing personalized care.

Finding the Best SIPS Surgeons in New York

New York offers access to some of the world’s most experienced SIPS surgeons, including those who pioneered the procedure. Selecting the right surgeon requires evaluating several key factors. Understanding the differences between SIPS surgeons and traditional bariatric surgeons can also help patients make a more confident and informed decision when choosing the right specialist for their care.

Board Certification and Credentials: Your surgeon should be board-certified through the American Board of Surgery with fellowship training in bariatric and metabolic surgery. Membership in the American Society for Metabolic and Bariatric Surgery (ASMBS) indicates commitment to the field. Dr. Mitchell S. Roslin at Lenox Hill Hospital, one of the co-creators of SIPS surgery, exemplifies these credentials.
High Surgical Volume with SIPS specifically: Experience matters significantly in complex procedures. Centers that originated SIPS, like Lenox Hill Hospital, or have performed hundreds of cases with published outcomes, demonstrate both familiarity with the technique and ability to manage potential complications. Ask potential surgeons about their specific SIPS case numbers and outcomes.
Multidisciplinary Teams and Aftercare: The best SIPS programs include dietitians, endocrinologists, psychologists, and dedicated post-surgical care coordinators. Lenox Hill Hospital, as a training center, maintains robust support structures that ensure patients receive comprehensive care throughout their weight loss journey.
Published Outcomes and Transparency: Surgeons who publish their results, whether through peer-reviewed journals or professional conferences, demonstrate accountability and contribute to advancing the field. Look for programs that openly share their weight loss outcomes, complication rates, and comorbidity resolution data.

Conclusion

SIPS weight loss surgery represents a significant advancement in bariatric care, offering patients the potential for substantial and sustained weight loss while minimizing complications through the preservation of the pyloric valve. For individuals struggling with severe obesity and related conditions such as type 2 diabetes, sleep apnea, or high blood pressure, this procedure provides an effective solution supported by strong clinical outcomes. With the right guidance and commitment to long-term lifestyle changes, patients can achieve meaningful improvements in both their health and quality of life.

At the Lenox Hill Bariatric Surgery Program, our experienced team of SIPS surgeons in New York delivers personalized care tailored to each patient’s unique needs, while also offering advanced weight loss solutions such as gastric sleeve, gastric bypass, duodenal switch, and adjustable gastric banding. From initial consultation to long-term follow-up, we are dedicated to helping patients achieve safe, effective, and lasting results. Take the first step toward transforming your health. Contact us today.

Frequently Asked Questions

What makes someone a good candidate for SIPS weight loss surgery?

Ideal candidates typically have a body mass index of 40 or higher, or a BMI of 35+ with obesity-related comorbidities such as type 2 diabetes, sleep apnea, or high blood pressure. Patients must also demonstrate readiness to commit to dietary changes, vitamin supplementation, and regular follow-up visits. Those who experienced insufficient weight loss after previous bariatric surgery may also qualify for SIPS as a revision procedure.

How does SIPS surgery compare to gastric bypass for weight loss?

SIPS preserves the pyloric valve, significantly reducing the risk of dumping syndrome that commonly affects gastric bypass patients. While both procedures deliver substantial weight loss, SIPS uses only one intestinal connection compared to two in gastric bypass, resulting in fewer complications like internal hernias and ulcers. Studies also show SIPS provides better glycemic control with less postprandial hypoglycemia.

What should I look for in a SIPS surgeon in New York?

Seek a board-certified bariatric surgeon with specific experience performing SIPS procedures, not just general bariatric surgery. Verify their surgical volume, hospital affiliations with leading institutions like Lenox Hill Hospital or NewYork-Presbyterian, and access to a multidisciplinary care team. Surgeons who publish their outcomes demonstrate transparency and commitment to quality.

Ready to take the first step to weight loss?

Get Started