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SADI-S Duodenal Switch in Tijuana, Mexico with Dr. Sandy Martinez

🏆 World-Recognized SADI-S Expert | #1 in Mexico & North America

Experience one of the most powerful weight loss procedures with our all-inclusive Duodenal Switch (DS) package starting at just $5,795.

SADI-S Surgery: Unlocking Maximum Weight Loss & Diabetes Remission

If you've spent years battling obesity, struggling with weight regain, or watching type 2 diabetes worsen despite your best efforts, you're not alone. For many patients, the problem isn't willpower. It's biology. The Single Anastomosis Duodenal-Ileal Bypass with Sleeve (SADI-S) is one of the most powerful and effective bariatric procedures available, designed to help patients achieve dramatic, long-term weight loss while improving obesity-related conditions such as type 2 diabetes, high cholesterol, sleep apnea, and metabolic syndrome.

Under the care of Dr. Sandy Martinez, Double Board-Certified Bariatric Surgeon and internationally recognized SADI-S expert, patients from the United States, Canada, and around the world travel to Tijuana, Mexico for life-changing results.

Get Approved for Duodenal Switch
Get Approved for Duodenal Switch

What is the Duodenal Switch (SADI-S)?

SADI-S (Single Anastomosis Duodenal-Ileal Bypass with Sleeve) is rapidly becoming the gold standard for high-BMI patients and bariatric revisions. Think of it as "The Sleeve 2.0." It combines the best parts of a Gastric Sleeve with the powerful metabolic changes of a Gastric Bypass, but using a safer, modernized, single-connection technique.

It works through a powerful dual-action approach:

  • First, we create a gastric sleeve, removing about 80% of the stomach. This drastically reduces the hunger hormone (ghrelin) and limits how much you can eat.
  • Next we reroute a portion of the small intestine (gastric bypass) with a single loop. This means your body will absorb significantly fewer calories and fats from the food you consume.
Duodenal Switch (SADi-S) Before and After Photo - Kimberly Hawkins

Hello! My name is Kimberly and I had the SADi-S with Dr. Sandy on 9/30/2024. I have lost 240 lbs. Starting weight was 409, surgery weight was 369, and current weight is 169. Right now my goal is 150 so that I can hit the BMI goal of 31. I am healthier and happier then I have ever been including my teens! My new lifestyle and health allows me to hike, paddleboard, Fish, and any new adventure I want! Every day is so exciting and never thought that at 39 years old I would feel this good. Sometimes I skip when I am walking... just because I can!  I am forever grateful and Dr. Sandy was so sweet and compassionate during the whole process! I love seeing everyone's journey and am happy to be a part of this amazing community 😀

Kimberly

The SADI-S Advantage: Preserving the Pylorus

Unlike a traditional Roux-en-Y Gastric Bypass, the SADI-S technique preserves your pylorus—the natural valve at the bottom of your stomach. This crucial detail allows for a much more natural digestion process, prevents the dreaded "dumping syndrome," and severely decreases the risk of extreme nutritional deficiencies or marginal ulcers.

Meet the Global Pioneer of the Modern SADI-S Technique

Bariatric Surgery Couple with Dr. Sandy Martinez

Trust your journey to Dr. Sandy Martinez—the Double Board-Certified Master Surgeon who performs more SADI-S procedures annually than anyone else in the world.

Experience the advanced Single Anastomosis Duodenal Switch (SADI-S) performed by IFSO-recognized Master Surgeon Dr. Sandy Martinez. Maximum weight loss and metabolic improvement with the highest safety standards in Mexico.Weight loss is often a frustrating journey, and sometimes traditional weight loss methods such as diet and exercise just aren’t enough. Dr. Sandy Martinez and her staff at our Tijuana bariatric practice are recognized to be the surgical team that "performs the most duodenal switch surgeries annually in the entire world." - IFSO award 🌎🏆🥇

Dr. Sandy is double board-certified, and she uses state-of-the-art technology that meets U.S. standards. World-Class SADI-S Expertise at an Exceptional Value Compared to US Prices"

Dr Sandy Martinez in a bright yellow shirt smiling with surgical lights in the background.

What Our Patients Say

★★★★★ 5.0 Rating • 120+ Google Reviews
Charise Carlson
July 19, 2026
Google Review
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I’m very glad I chose this surgical group for my SADI-S surgery. I did a lot of research beforehand, and from everything I learned, Dr. Sandy is one of the top—if not the top—SADI-S surgeons in the world. The fact that she trains other surgeons on the procedure was incredibly reassuring to me and gave me a lot of confidence in choosing her. This is in addition to her board certifications, her being a master surgeon, all of which I double checked (because I was nervous).

The team who helped me sign up for the surgery, and helped me beforehand and during recovery, were incredibly kind and personable. This includes Merit, Enrique, and Jon.

The quality of the medical providers and staff is clearly very important to this group. All of the doctors were obviously very good at what they do, and the nurses were competent, friendly, and helpful. I’m usually a difficult person to start an IV on, but they got it on the first try every single time, which honestly impressed me.

The physician who performed my pre-op examination was exceptionally thorough. This is Fernando Vega Frias. He noticed and explained things that previous US physicians had missed, and I was so impressed that I’m actually considering traveling to Tijuana regularly to see him as my primary physician.

The nutritionist, Asdrubal Castro, is also excellent—knowledgeable, practical, and very helpful.

My hospital room was large and comfortable, with big windows. Everything was very clean, the Wi-Fi worked well, and the chicken broth was amazing. Sergio, the driver, was also great and made the transportation part of the experience easy and comfortable.

Most importantly, I felt that I was in the hands of highly skilled medical professionals. Bariatric surgery is a major decision, and I’m very grateful that I chose such an experienced surgeon and team.

... Read more
Angel Simon
July 15, 2026
Google Review
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From start to finish it was a smooth ride. The team was wonderful and made sure I understood every thing. They even helped me with a charger for my phone as I left mine at home. The pain was minimal and I feel wonderful on my second day postop. Highly recommend Dr. Sandy for any bairiatric surgery you are considering.

... Read more
Jesenia Venzor Ortiz
June 14, 2026
Google Review
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I had a SADI-S procedure done by Dr. Sandy. She, Enrique and the rest of the staff made this process as easy as possible. They were very kind and helpful. If you are looking for a professional and loving place to get Bariatric surgery, I highly recommend Dr. Sandy and her staff. I’m excited to see what my new future holds.

... Read more

Who is the Ideal Candidate for SADI-S?

SADI-S is a powerful metabolic tool and is typically recommended for patients with severe obesity, weight regain after bariatric surgery, or obesity-related health conditions.

Super-Obesity (BMI over 50)

Patients with a very high Body Mass Index often face metabolic resistance that restriction alone cannot conquer. SADI-S offers the highest expected excess weight loss percentage of any bariatric surgery.

Weight Regain After Previous Bariatric Surgery

If your gut hormones have adapted to your prior gastric sleeve and the scale is creeping back up, SADI-S is the ultimate solution to restart your weight loss without starting from scratch.

Obesity-Related Comorbidities like Diabetes

Clinical data shows that SADI-S has an exceptional success rate in putting severe Type 2 Diabetes and high cholesterol into long-term remission.

Why Choose Dr. Sandy for Your SADI-S in Mexico?

Choosing duodenal switch surgery in Mexico can feel overwhelming. Dr. Sandy Martinez removes the stress by combining world-class surgical expertise with a premium luxury experience.

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    🥇 SRC Master Surgeon: An elite designation guaranteeing exceptional safety records and flawless surgical execution.
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    🚫 The "No-Agency" Promise: You communicate directly with the medical team. No third-party facilitators or hidden markups. 100% transparency.
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    🚐 VIP All-Inclusive Packages: From the moment you land at the San Diego Airport, we handle everything. Private border transport, spacious rooms with bed for companion, and surgery in a fully-equipped, JCI-standard hospital in Tijuana.
Gastric Sleeve in Tijuana Mexico - Before and After Photo
Side-by-side before and after photos of a male patient following duodenal switch surgery in Mexico.

Stop Fighting Your Biology. Start Your Transformation.

You deserve the best hands possible for your weight-loss journey. Choose safety. Choose experience. Choose the Master.

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How Duodenal Switch (SADI-S) Works

In this video, I explain the SADI-S, a highly advanced and modern evolution of the traditional Duodenal Switch. While a standard Duodenal Switch involves two intestinal connections, the SADI-S simplifies this into a single loop (Single Anastomosis). It powerfully combines a gastric sleeve to restrict food intake with an intestinal bypass to reduce calorie absorption. As the world's leading expert in this procedure, I break down exactly how this dual-action surgery delivers maximum weight loss and metabolic healing with an even safer, streamlined technique.

What's Included in Your Surgery Package

From your first virtual consultation to long-term follow-up, Dr. Sandy and her team are with you every step of the way. Your journey includes all required pre-op tests, airport pick-up and drop-off, and the option to bring one companion as part of your care experience.

Bariatric surgeon Dr. Sandy Martinez in navy scrubs giving a thumbs-up next to a happy weight loss surgery patient in a blue gown.
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1-Night Hotel Stay

Your package includes one hotel night for you and your companion, scheduled before or after surgery based on your travel plans.

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Private Recovery Stay

Enjoy a private hospital room for two nights with 24/7 bilingual care and in-room amenities.

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Nutrition Guidance

Before you return home, our licensed nutritionist will review your post-op diet plan and long-term success guidelines with you in person.