happy woman walking outdoors after gastric bypass

Gastric Bypass

For some people who struggle with obesity, diet and exercise just aren't enough to achieve healthy weight loss.

Gastric bypass surgery is a tried-and-true method of surgically helping patients control their appetites and lose weight.

Why should you choose Dr. Matthew St. Laurent and his team at Northwest EndoSurgical in the Houston, TX, area for your gastric bypass?

What Is Gastric Bypass Surgery?

Gastric bypass surgery is one of the most commonly performed weight loss surgeries in the U.S. Also known as Roux-en-Y gastric bypass surgery, this procedure divides the stomach into two separate pouches: upper and lower. The small intestine is then modified to connect it to the upper pouch. This procedure is performed in a hospital setting under general anesthesia and is considered a major operation. Techniques and technology have been improving steadily over the last 50 years, and the procedure is one of the safest and most reliable gastric procedures available today.

The procedure is sometimes referred to as "Roux-en-Y" because of the surgeon who pioneered the technique (César Roux) and the alignment of the stomach and intestines after the surgery somewhat resembles a Y.

Illustration explaining gastric bypass surgery

A Concise Explanation From Our Expert Surgeon

Gastric bypass surgery by Northwest EndoSurgical can help you improve your life. It is a procedure that has been performed on hundreds of thousands of patients for nearly 60 years to help control diabetes, hypertension, sleep apnea, and a host of health conditions related to obesity. Dr. St. Laurent can explain the advantages of gastric bypass surgery over other weight loss options at our Houston weight loss clinic.

5-Star Reviews From Houston "They may have helped save my life."


Joby Joseph

Houston, TX


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The team at Northwest Endosurgical is amazing. A summarization of their practice could be, "We Care, and We'll Help You Get There". They are very good at what they do. Dr. St. Laurent made me very confident and comfortable during and after the procedure. The dieticians are excellent. They are very patient and supportive. The team stands out by providing accountability and care, without shaming... they may have helped save my life.

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Bill Robinson

Houston, TX


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Very friendly environment. Dr. spends time with you discussing your situation. All of the staff are very patient focused. They really exemplify listening to the patient, and taking time to explain.

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See What's Possible

Dr. Matthew St. Laurent's overweight patient before gastric bypass
Before Gastric Bypass
Dr. Matthew St. Laurent's slender patient after gastric bypass
After Gastric Bypass
After Dr. St. Laurent performed laparoscopic gastric bypass on this patient, she lost a significant amount of excess weight.

Schedule a Consultation  for a Gastric Bypass Today

Have you tried unsuccessfully to lose weight through diet and exercise in the past? Are you more than 80 pounds overweight or your BMI is 40 or greater? Do you have an obesity-related disorder such as type 2 diabetes or obstructive sleep apnea? If your answer to any of those questions is "yes," you may qualify for gastric bypass.

Dr. Matthew St. Laurent has completed thousands of bariatric surgeries over nearly two decades as a board-certified general surgeon. He and his team at Northwest EndoSurgical in the Houston, Texas, area offer a total package of care, including pre- and postoperative counseling. 

To begin a weight loss journey with a bariatric practice that supports you every step of the way, we invite you to schedule a consultation today. You can request a consultation with our Houston team by using our form or by calling:

(281) 921-1890

Northwest EndoSurgical team
The team at Northwest EndoSurgical in Houston, Texas

Praise for Dr. St. Laurent "The most comprehensive, efficient, and positive patient experience!"


Scott Milliren

Houston, TX


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I found Dr. St. Laurent and his team to be thorough, knowledgeable and professional regarding the entire weight loss, surgical journey. The care after surgery is comprehensive and lasts for a year. There are 2 dietitians on staff the offer unique, fact-based advice. I found that to be the differentiating factor in my decision to trust my medical care with NW Endo. I highly recommend, and have already referred my wife and close friend.

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Johaymar Andujar Moczulski

Houston, TX


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Dr. Laurent seemed genuinely interested in my health and spent a significant amount of time to explain my diagnosis thoroughly, along with providing several remediating options with varying associated costs and benefits (pros/cons). His recommended solutions were focused on mitigating my condition, rather than just treating my symptoms, unlike most GI doctors tend to do. I was very impressed by his wealth of knowledge and the fact that I never felt rushed during my Q&A. In addition, my appointment was on-time and the front office staff were very professional and amiable. I totally recommend Dr. St. Laurent for the most comprehensive, efficient, and positive patient experience!

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Why Patients Choose Us for Gastric Bypass Surgery


Dr. St. Laurent is highly regarded in the bariatric community. In addition to his many prestigious awards and memberships, Dr. St. Laurent is an educator of other surgeons. Over the years, he has successfully performed thousands of bariatric surgeries.

Long-Term Care

At our bariatric surgery office in Houston, we know that your weight loss journey neither begins nor ends with a weight loss surgery. Most bariatric patients require guidance and care both during and after their procedure in order to successfully shed their excess weight and lead healthier lives. That is why we commit to offering our patients long-term support with nutritional and psychological counseling.  


We don't want financial concerns to keep any patient from life-changing bariatric surgery. For any costs not covered by medical insurance, we offer third-party financing through CareCredit®, American Healthcare Lending®, and United Medical Credit®.

Laparoscopic Options

Dr. St. Laurent prefers to operate laparoscopically whenever possible. Laparoscopic procedures involve making a few small incisions and operating inside the body with the aid of a surgical camera. This advanced surgical method reduces scarring, chances of complications, and recovery time.

Incredible Results

Dr. Matthew St. Laurent's patient before gastric bypass
Before Gastric Bypass
Dr. Matthew St. Laurent's patient after gastric bypass
After Gastric Bypass
Gastric bypass surgery with our doctor in Houston, TX, will limit the amount of food you can eat and change the way your body absorbs nutrients, leading to significant, sustainable weight loss.

Board-Certified What Does That Mean?


To become a board-certified general surgeon, Dr. St. Laurent completed a required residency in his surgical specialty and then passed a challenging written examination presented by a specialty board. He maintains his certification by continuing his education. 

Highly Knowledgeable

Not all surgeons go the extra step to become board-certified. By choosing Dr. St. Laurent for your weight loss surgery, you can rest assured that you are working with a highly trained medical professional who is knowledgeable, ethical, and able to handle any unforeseen surgical challenges.

Eliminate Your Weight Choose One of America's Top Surgeons

If you're seriously considering bariatric surgery, then you've made the important decision to live a healthier life. Now it's time to choose the right bariatric surgeon and weight loss clinic in the Houston area for your gastric bypass. Dr. Matthew St. Laurent and his Northwest EndoSurgical team will be there for you during this momentous time in your life from the second you contact our highly regarded practice to well beyond your surgery. 

There is no better time than the present to start your journey. Contact Dr. St. Laurent today to set up a no-pressure, educational consultation with a board-certified doctor who was named one of America's Top Surgeons by the Consumers Research Council of America. You can get in touch with us by contacting us online or calling our Houston office. We look forward to meeting with you.

(281) 921-1890

Gastric Bypass Surgery
Our surgeon has successfully performed thousands of Roux-en-Y procedures

Find Out Why Patients
Love Us
"Above and beyond ANY physician"


Sarah Briggs

Houston, TX


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Dr. St. Laurent and his staff go above and beyond ANY physician I have ever been to. I have had 2 in office visits and each time Dr. St. Laurent has been patient, thoroughly goes in detail his recommendations and you don't feel rushed. I have only had the pleasure of dealing a few of the staff and they all are very personable and treat you like so much more than just a patient. I highly recommend Dr. St. Laurent to ANYONE.

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Cammie Parish

Houston, TX


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I am 8 weeks post gastric sleeve. I feel good and I am very pleased with all of the care and guidance I receive from Dr. St. Laurent. I cannot say enough positive things about the dieticians and the quality of the aftercare at this practice. I can call any number of people including Dr. St. Laurent and gets answers and guidance anytime, which is important with such a life changing procedure. The entire team has been a pleasure to work with.

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Gastric Bypass
Surgery Cost

The average cost of Roux-en-Y gastric bypass surgery in the United States is between $20,000 and $25,000, but each patient's situation is unique, and the final cost is determined by a variety of factors. When you visit our Houston, TX, office for a consultation, Dr. St. Laurent and his team will thoroughly discuss these factors and give you an exact quote for your gastric procedure.

Our prices are very competitive for the industry, especially considering the long-term care and counseling we provide. To make bariatric care as affordable as possible, our knowledgeable staff will also go over any insurance benefits you might have and will help you maximize your coverage. We also offer convenient financing plans and other payment options that we can discuss during your consultation

Gastric Bypass

Body Mass Index

Gastric bypass surgery is only recommended for patients with a BMI of 40 or greater or patients with a BMI greater than 35 who also have weight-related health conditions.

Medical Conditions

Certain medical conditions and allergies can increase the risks of surgery. During your consultation at our Houston-area office, Dr. St. Laurent will conduct a thorough review of your medical history to confirm that you are a strong candidate.

Last Resort

Any kind of weight loss surgery should only be considered as a last resort. It is always preferable to lose weight naturally through diet and exercise. However, some patients just can't lose weight through lifestyle changes. In those cases, gastric bypass surgery is a great option.

Healthy Living

Gastric bypass surgery will only lead to sustainable weight loss if you are willing to commit to a healthy lifestyle after surgery. During your consultation, Dr. St. Laurent will explain the eating habits and exercise regimen you will need to adopt after surgery in order to lose your excess weight. Then, you and Dr. St. Laurent can decide together if you are ready to begin this journey.

How Is Gastric Bypass Surgery Performed?

This is an animated demonstration of how a gastric bypass procedure is performed. Through small incisions, Dr. St. Laurent will staple off sections of the stomach to create a reduced stomach pouch. The small intestine is then separated into two sections so that food can pass directly into a point further along in the small intestine.

Request a Consultation For This Proven Procedure

With ongoing technological advancements, the gastric bypass procedure is now safer and more routine than it was just 20 years ago. Cutting-edge techniques are especially effective in the hands of a board-certified surgeon like Dr. St. Laurent. When performing Roux-en-Y, he utilizes 4k cameras for detailed visualization, ultramodern energy devices for increased surgical precision, and state-of-the-art staple technology to reduce risks like bleeding. 

For many years, long-term data about gastric bypass satisfaction rates was lacking. In October of 2022, the medical journal Obesity Science and Practice published a study evaluating nearly 200 gastric bypass recipients. More than 90% of these patients were satisfied with both their initial treatment and weight loss results a full year after surgery. 

To start your gastric bypass journey, simply reach out today. 

happy older woman after bariatric surgery

Gastric Bypass
Surgery Timeline

Most patients return to normal diet and activity levels in around six weeks.
Most patients return to normal diet and activity levels in around six weeks.


If you think weight loss surgery could be the right solution for you, schedule a consultation with Dr. St. Laurent at our office in Cypress, TX, just outside of Houston. During this consultation, the doctor will complete a thorough analysis of your medical history and conduct some tests to determine whether gastric bypass or some other bariatric surgery is right for you. If you and Dr. St. Laurent mutually agree to move forward with surgery, your gastric procedure will be scheduled.

Prepare for Surgery

As the date of your procedure approaches, carefully follow all of Dr. St. Laurent's instructions. Practice healthy habits, like quitting smoking and limiting your alcohol consumption. Refrain from certain medications, especially ones that make it difficult for your blood to clot, like ibuprofen and aspirin. You'll also need to make arrangements for someone to help you around your home after your bariatric surgery.


When the day of your weight loss surgery finally arrives, the first step will be to put you under general anesthesia so you are fully asleep during the procedure.


Next, Dr. St. Laurent will make several small incisions in your abdomen to access your stomach and small intestine. He will insert a laparoscope and surgical tools through the incisions.

Stomach Division

Using staples, Dr. St. Laurent will divide your stomach into two separate sections, ensuring the upper section where food will go is much smaller than the lower section.

Intestine Connection

After separating your stomach, a portion of your small intestine will be connected directly to the upper pouch to allow food to pass directly through it. 

Close Incisions

Once the small intestine is connected to the upper pouch, the gastric bypass is complete. Dr. St. Laurent will remove his tools and stitch the incisions shut. The entire procedure, including connecting your small intestine to the upper pouch, usually takes between one hour and 90 minutes.


Generally, an overnight hospital stay is required after gastric bypass surgery. Dr. St. Laurent will monitor your progress and release you when you are able to walk short distances comfortably and eat a reasonable amount of your diet.

Once you are released, you will need to limit your activity for up to two weeks. After that time, you can gradually increase your activity level over the next few weeks. You will also need to modify your diet, gradually adding in solid foods until you are able to tolerate them easily. Most patients return to normal diet and activity levels in around six weeks.

Healthy Weight Loss

After you are fully recovered, it is important to eat a healthy diet and lead a healthy lifestyle in order to achieve the best possible weight loss results. At our practice in Houston, Texas, we continue to support our patients well after their bariatric surgeries with nutritional and psychological counseling. As you continue to work with us, you should experience noticeable weight loss within six months.

Excellent Care, Exceptional Results

The American Society of Metabolic and Bariatric Surgeons named Northwest Endosurgical a Center of Excellence. 

Watch Gastric Bypass Surgery  Performed by Dr. St. Laurent

Dr. St. Laurent performs a laparoscopic roux-en-Y gastric bypass surgery. After making small incisions in the abdomen, he reduces the stomach to a portion of its original size and re-routes the intestine so that it bypasses the beginning of its tract. Afterward, patients feel fuller more quickly and experience less hunger between meals.

Calculate Your BMI

Let's Explore Your Options

If you are ready to overcome obesity and live a healthier life, schedule a consultation with Northwest EndoSurgical in Houston, TX. You can request a consultation by contacting us online or by giving us a call.

Grateful For Houston's Praise "He is truly a gifted surgeon"


Dianna Thompson

Houston, TX


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Dr St. Laurent is a true scholar. During my initial appointment I felt as though I was taking a medical class in his office! He thoroughly explained every step of the procedure for me and helped me choose which gastric surgery was best for me. I could not ask for better care. He is truly a gifted surgeon who holds every one of his patients as his top priority. His office staff and nurses exceed expectations and are ready to help in any way. I recommend, without reservation, to anyone in need of gastric surgery to meet with Dr St Laurent.

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Matias Dominguez

Houston, TX


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After meeting the Dr I was already convinced I found my surgeon! The staff is amazing also and always answer the phone when I call. Yesterday I got to meet one of their RDs and she was amazing as well. I am currently jumping all the hoops my insurance has provided for me. I will update everyone once I have my surgery. Update: 5 days post op/ feeling great everything that was explained to me is happening. I can’t say enough good things about this Doctor, his confidence made my surgery stress free. If you are looking for the best this is it folks good luck to everyone! Update: 6 months post op. Feeling great lost over 100lbs so far. This is by far the best decision I have ever made. I wish everyone the best on their weight loss endeavors!

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Gastric Bypass Risks

Like any surgical procedure, gastric bypass surgery could cause an infection or excessive bleeding. There's also a chance that the stomach or intestines could be damaged during the procedure. By choosing Dr. St. Laurent in Houston, TX, for your weight loss surgery, you greatly reduce your chances of encountering these issues. Dr. St. Laurent has successfully completed thousands of surgeries, and he uses the safest, most precise technology during every procedure.

Gastric bypass surgery is uniquely associated with a complication known as "dumping syndrome." When food passes from the stomach into the small intestine too quickly, it can cause nausea, vomiting, and diarrhea. Dr. St. Laurent will give you detailed instructions after surgery so that you can avoid this uncomfortable condition.

Dr. Matthew St. Laurent

Northwest Endosurgical

At Northwest Endosurgical in Houston, Texas, Dr. Matthew St. Laurent helps patients achieve dramatic weight loss and improved health through bariatric surgery. Dr. St. Laurent is one of the most experienced bariatric surgeons in greater Houston, and he is affiliated with several professional organizations, including:

  • The American Society for Metabolic and Bariatric Surgery
  • The American College of Surgeons
  • The Society of American Gastrointestinal Endoscopic Surgeons
  • The Obesity Action Coalition
  • The American Medical Association
  • The Texas Medical Association
  • The International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO)

To schedule a consultation, book online or give us a call at (281) 921-1890.

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