Bariatric Surgery in Tijuana, Mexico
SASI Surgery
Single Anastomosis Stomach-Ileal Bypass. An advanced, modern metabolic operation combining sleeve gastrectomy and gastric bypass for optimal weight loss and fewer complications.
Procedure Overview
Single Anastomosis Stomach-Ileal Bypass
The Single Anastomosis Stomach-Ileal Bypass with Sleeve Gastrectomy (SASI-S) is a recent advance in metabolic and bariatric surgery that combines two well-established operations: the sleeve gastrectomy (VSG) and the mini-gastric bypass (MGB). The SASI-S surgical procedure can also be considered a highly refined, modified version of SADI-S. It offers similar dramatic weight reduction and resolution of comorbidities, but with a significantly lower risk of complications and long-term malnutrition.
The SASI-S procedure minimizes the risks commonly seen with traditional malabsorptive surgeries. Dr. Cervantes and our experienced bariatric team in Tijuana, Mexico begin the procedure by removing about 70% of the stomach to create a sleeve-shaped pouch. The lower portion of the stomach is then connected directly to the ileum (the lower part of the small intestine), effectively bypassing a section of the intestinal tract. This unique "dual transit" allows food to pass through both the newly bypassed route and the natural digestive pathway.
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Ideal for Super-Obese Patients
Reclaiming Your Health with SASI-S
A Powerful Metabolic Solution
The SASI procedure is specifically designed for both obese and super-obese patients (BMI > 50). By combining restriction (smaller stomach) with a controlled level of malabsorption, it offers unmatched success in improving severe obesity-related conditions:
The "Dual Transit" Advantage
Unlike traditional bypasses that entirely skip the first section of the small intestine, SASI-S preserves the pyloric valve. Food travels through two paths: one portion goes through the normal digestive tract (allowing essential vitamins and minerals to be absorbed), while the other bypasses a large segment of the intestine.
"Because food still enters the duodenum natively, SASI-S dramatically decreases the chances of severe vitamin deficiencies, chronic diarrhea, and dumping syndrome while maximizing weight loss."
Frequently Asked Questions
FAQs About SASI-S Surgery
What exactly is SASI-S Surgery?
It stands for Single Anastomosis Stomach-Ileal Bypass with Sleeve Gastrectomy. In simple terms, it creates a gastric sleeve to restrict food intake and connects the bottom of the stomach directly to the lower intestine (ileum).
This creates a "dual pathway" where food goes through both the normal digestive system and the new bypass, maximizing weight loss and ensuring adequate nutrient absorption.
What is the difference between SASI and SADI-S?
While both are highly powerful procedures for weight loss, the SASI-S preserves the natural flow of some food through the duodenum by not cutting off the pyloric valve completely.
This preservation of the natural pathway significantly lowers the risk of severe malnutrition, vitamin deficiencies, and dumping syndrome when compared to SADI-S.
How much weight can I expect to lose?
The SASI procedure is incredibly effective, especially for patients with higher BMIs (super-obese). Patients typically lose between 80% to 90% of their excess body weight within the first 18 to 24 months.
It also boasts one of the highest remission rates for obesity-related conditions like Type 2 Diabetes.
Preparing for SASI-S surgery
You will be guided through a specific pre-surgery diet along with supplements to shrink your liver. Our certified nutritionists will walk you through every step to ensure you are fully prepared to undergo your customized SASI surgery in Tijuana.
How long does the surgery take?
The SASI-S procedure typically takes between 1.5 and 2 hours. Although it combines two operations, it is performed laparoscopically through small incisions. This minimally invasive technique ensures precision, faster recovery, and a reduced risk of complications.
What is the recovery time after surgery?
Recovery involves spending one to two nights in the hospital under Dr. Cervantes' care. This is followed by a structured three-month program to gradually transition your diet — from liquids to purées and back to normal, solid foods — fully supervised by our team.
Schedule a Consultation
Getting Here
You will fly into San Diego International Airport (SAN). Our private driver will pick you up directly from the airport and transport you to Centro Médico Premier in Tijuana — just minutes from the border. You may bring one companion who will stay with you throughout.
Arrive
Transport
Late Arrivals
Return Flight
Documents
What to Bring
Clothing
- Elastic-waist pants or yoga pants
- Comfortable T-shirts / tank tops
- Light jacket or hoodie
- Slip-on shoes or flip-flops
Toiletries
- Toothbrush & toothpaste
- Deodorant, face wash, body wash
- Chapstick (hospital air is dry)
- Alcohol pads (to remove adhesive from incision sites)
Other Essentials
- All prescription medications (labeled)
- Cell phone + charger
- Small amount of cash (tips for driver & nursing staff)
- Snacks/tea for your companion
Payment & Deposit Information
Clear, transparent rates and secure options for your life-changing weight-loss transformation.
| Procedure | Price (BMI < 50) |
|---|---|
| Gastric Sleeve (VSG) | $4,900 |
| Single Incision Gastric Sleeve (BMI 30–35 only) | $5,900 |
| Gastric Bypass (RYGB) | $6,500 |
| Mini Gastric Bypass (MGB) | $6,500 |
| SASI | $6,900 |
| SADI | $7,500 |
| Gastric Balloon | $3,700 |
| Gastric Balloon Extraction | $1,000 |
| Revisional Surgery | Procedure price + $1,000 |
BMI Considerations
Additional costs applied according to patient's body mass index measurements to cover specialized operating room requirements.
50 – 59
+ $500
60 – 69
+ $1,000
70+
+ $1,500 – $2,500
(potential $1,000 for ICU post-op)Deposit & Payment Methods
A $500 deposit is required within 7 days of scheduling your surgery date.
The deposit is non-refundable but transferable (with minimum 6 weeks' notice).
Balance is due in cash on the day of surgery, or financed through an approved medical loan company.
Always include your Name, Procedure, and Surgery Date in the payment memo.
Send proof of payment (screenshot) to your coordinator immediately.
Accepted Channels
Zelle Option 1 (Preferred)
619-831-5212
Zelle Option 2 (Preferred)
drc.zelle@gmail.com
Venmo & PayPal
Deposit via Venmo/PayPal = $540
Credit/Debit Card (in hospital)
VISA, Mastercard, AMEX, Discover
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What Is Obesity?
Obesity is a chronic, progressive disease that affects multiple organ systems and dramatically increases the risk of type 2 diabetes, high blood pressure, heart disease, sleep apnea, joint degeneration, and certain cancers. It is not a lack of willpower — it is a medical condition that requires medical treatment.
BMI Classification
| BMI Range | Classification |
|---|---|
| 25 – 29.9 | Overweight |
| 30 – 34.9 | Obesity Class I |
| 35 – 39.9 | Obesity Class II |
| 40 – 49.9 | Morbid Obesity |
| 50 – 59.9 | Super Obesity |
| > 60 | Super Super Obesity |
Who Is a Candidate for Bariatric Surgery?
- BMI ≥ 40 regardless of comorbidities
- BMI ≥ 35 with at least one obesity-related condition (type 2 diabetes, hypertension, sleep apnea, etc.)
- BMI ≥ 30 with severe metabolic disease (case-by-case evaluation)
- Prior failed attempts at sustained weight loss through diet and exercise
- Commitment to lifestyle changes and long-term follow-up
The Cervantes Experience
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One transparent price. Total peace of mind. We handle every detail of your journey so you can focus entirely on your transformation, health, and recovery.
Board-Certified Experts
Led by Dr. Cervantes, our elite surgical team is dedicated to metabolic health, precision, and patient safety.
Hospital & Surgery Fees
No hidden costs. Full surgical facility access, medical team, and anesthesia fees are completely included.
Premium Accommodations
Comfortable stays at our exclusive Guest House and top-tier hospital rooms designed for a peaceful recovery.
Private Transportation
Seamless, secure door-to-door transportation from the San Diego Airport directly to our facilities.
Bilingual Support
Friendly, fluent English-speaking patient coordinators by your side to assist you at every single step.
Dietary & Post-Op Care
Expert nutritional counseling and continuous medical follow-up to ensure optimal, long-lasting weight loss.
Centro Médico Premier
One of Tijuana's most prestigious and advanced medical centers. Fully equipped with state-of-the-art surgical technology and an Intensive Care Unit (ICU), ensuring our bariatric patients receive the highest standards of safety and care comparable to top U.S. hospitals.
Explore Facility
Alfa Guest House
A safe, spacious, and relaxing sanctuary where your journey begins. After we pick you up from the San Diego airport, you and your companion will arrive at Alfa Guest House. Enjoy comfortable beds, Wi-Fi, TV, board games, and the chance to connect with fellow patients in a welcoming, home-like environment designed exclusively for your comfort.
Discover Alfa Guest HouseThe Informed Journey
Our VIP Private Facebook Community
This is a private educational community for people who want to understand the full weight-loss transformation process — from bariatric surgery to post-weight-loss body contouring.
Here, thousands of individuals share real experiences, thoughtful questions, and practical insights. This space exists because successful outcomes are not built only in the operating room — they are built through preparation, education, and long-term vision.
- Ask questions openly or completely anonymously in a judgment-free zone.
- Moderated directly by the Cervantes Bariatrics & CBC Plastics medical team.
- Not a sales group. It is a space to learn, listen, and make informed decisions.
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Excellence in Bariatric Care
Our Procedures
We utilize the most advanced, minimally invasive surgical techniques to ensure your safety, comfort, and long-lasting weight loss success.
Gastric Sleeve
The most popular and effective bariatric procedure. We remove approximately 80% of the stomach, creating a smaller "sleeve" that restricts food intake and significantly reduces hunger hormones, promoting rapid and safe weight loss.
Read more about Gastric Sleeve* Inicia tu proceso hoy para recibir un presupuesto completo a tu caso, recuerda que cada caso es personalizado.
Gastric Bypass
Considered the gold standard in bariatric surgery. This procedure creates a small stomach pouch and reroutes the intestines. It provides exceptional weight loss results and is highly effective in resolving type 2 diabetes and severe acid reflux.
Read more about Gastric Bypass* Inicia tu proceso hoy para recibir un presupuesto completo a tu caso, recuerda que cada caso es personalizado.
Mini Gastric Bypass
A simplified, highly effective alternative to the traditional bypass. It features a shorter operating time, excellent weight loss results, and lower complication rates while effectively improving metabolic conditions like type 2 diabetes.
Read more about Mini Bypass* Inicia tu proceso hoy para recibir un presupuesto completo a tu caso, recuerda que cada caso es personalizado.
SASI Surgery
The Single Anastomosis Sleeve Ileal bypass combines the benefits of a gastric sleeve with a controlled intestinal bypass. This advanced technique delivers powerful, sustained weight loss and excellent metabolic results while preserving nutrient absorption.
Read more about SASI Surgery* Inicia tu proceso hoy para recibir un presupuesto completo a tu caso, recuerda que cada caso es personalizado.
Revision Surgery
For patients who experienced complications or insufficient results from a previous bariatric procedure. Our expert team carefully evaluates each case to correct, convert, or enhance prior surgeries, helping you get back on track toward your goals.
Read more about Revisions* Inicia tu proceso hoy para recibir un presupuesto completo a tu caso, recuerda que cada caso es personalizado.
Ready to Transform Your Life?
Take the first step towards a healthier, happier you. Schedule your free evaluation with Dr. Cervantes and our expert team today.
Financing Available
Flexible payment plans with our trusted partners. Achieve your weight loss goals today.