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Gastric Sleeve Surgery for Safe, Lasting Weight Loss

The most widely performed bariatric procedure worldwide.

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What is Gastric Sleeve Surgery?

Gastric sleeve surgery is one of the most effective, proven methods for achieving long-term weight loss. At Eviva, our surgeons remove approximately 75-80% of the stomach, reducing its size to a sleeve-like shape. This helps patients feel satisfied after smaller meals, leading to significant weight loss while maintaining natural digestion. Our outpatient approach and compassionate care team make Eviva a trusted leader in bariatric surgery across the Northwest.

Did You Know?

Eviva was the first facility in the world to perform the Gastric Sleeve in an outpatient setting. Our medical publications have paved the way for insurance coverage of ASC procedures.

3D illustration of a stomach after sleeve gastrectomy, showing the reduced, tube-shaped stomach with surgical sutures.
Candidates

Is the Gastric Sleeve Right for You?

Gastric sleeve surgery may be the right option if you have a body mass index (BMI) of 35 or higher, or a BMI over 30 with obesity-related health conditions such as type 2 diabetes, hypertension, or sleep apnea.* It’s especially beneficial for patients who have tried diet and exercise without lasting success and are ready for a long-term solution.

*Patients with a BMI under 30 may still qualify depending on their unique health profile.

Calculate Your BMI​
  • BMI of 35+ (or 30+ with medical conditions)
  • Struggled to lose weight with diet and exercise
  • Experiencing obesity-related health issues
  • Willingness to commit to long-term lifestyle changes
  • Seeking a permanent, effective weight loss solution
Benefits

Why Choose Gastric Sleeve?

SIGNIFICANT AND SUSTAINABLE WEIGHT LOSS

Gastric sleeve surgery permanently reduces the stomach’s size, leading to greater, more durable weight loss compared to diet and medications alone.

IMPROVEMENT OR RESOLUTION OF DIABETES, HYPERTENSION, SLEEP APNEA

Gastric sleeve surgery often resolves or dramatically improves type 2 diabetes, sleep apnea, hypertension, and other life-threatening conditions.

MINIMALLY INVASIVE WITH FASTER RECOVERY

Performed laparoscopically, gastric sleeve surgery involves smaller incisions, less pain, and a quicker return to daily activities compared to other bariatric surgeries.

SIMPLER DIGESTIVE PROCESS WITHOUT INTESTINAL REROUTING

Unlike gastric bypass, gastric sleeve surgery keeps your digestive tract intact, preserving natural absorption while still achieving powerful weight loss results.

Gastric Sleeve PATIENT SPOTLIGHT — Tina

“I truly believe having this surgery has saved my life.”

After a lifelong struggle with her weight, Tina turned to Eviva for support. With the Eviva team by her side, she lost over 160 lbs, reversed her high blood pressure and sleep apnea, and reclaimed her energy, confidence, and love for life.

Testimonials

Gastric Sleeve Before & After

Cristina 

Gastric Sleeve

Shelly 

Gastric Sleeve

Heidi 

Gastric Sleeve

Lisa 

Gastric Sleeve

Joe & Mariah

Gastric Sleeve

Cerissa

Gastric Sleeve

Providers

Providers that perform the Gastric Sleeve

Mimi Tan, MD

Bariatric & Metabolic Surgeon, Board Certified General Surgeon

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Profile picture of Dr. VanderWel wearing scrubs in front of blue background

Brandon VanderWel, MD

Bariatric & Metabolic Surgeon, Board Certified General Surgeon

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Smiling male doctor in a white coat with a yellow tie and blue shirt, sitting in a bright medical office.

Robert Landerholm, MD

Board Certified General Surgeon, Bariatric & Advanced Minimally Invasive Surgery

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Our Process

How our Bariatric Surgery Program Works

Step 1.
Schedule a Virtual Consultation

Meet with one of Eviva's world class surgeons to learn which procedure is right for you.

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Step 2.
Intake + Insurance Review 

Your Bariatric Pathway Coordinator (BPC) is here to help every step of the way—navigating insurance approvals, clinical milestones, or walking you through the self-pay process.

Step 3.
Surgery Day

Your journey begins today—and you’re in the best hands. Our streamlined outpatient approach means most patients are home the same day, recovering comfortably and confidently with support from our experienced team.

FAQ

Most Popular Questions

Am I a candidate for Gastric Sleeve Surgery?

Gastric sleeve surgery may be appropriate for individuals with a BMI of 35 or higher, or over 30 when accompanied by conditions like type 2 diabetes, high blood pressure, or sleep apnea. Those who haven’t seen lasting success with lifestyle changes and are seeking a durable, medical solution may benefit most. In select cases, patients with a BMI under 30 may still be eligible.

Most patients lose 30–35% of their total body weight within 12 to 18 months after surgery. Results vary depending on commitment to lifestyle changes, nutrition, and physical activity.

Yes, it is a permanent procedure. A portion of the stomach is surgically removed, and it cannot be reversed.

Most patients return to normal activities within 1–2 weeks. Full recovery varies, but many people are back to work and light activity within 10–14 days.

Many patients report a significant reduction in hunger due to the removal of the portion of the stomach that produces the hunger hormone ghrelin. However, hunger can return over time depending on eating habits.

Often, yes, if you meet specific medical criteria. Eviva can verify your benefits and walk you through the approval process.

All surgeries carry some risk. For gastric sleeve, possible complications include bleeding, infection, leaks, or acid reflux. Most are rare and can be managed effectively.

You’ll start with liquids and gradually transition to soft foods, then regular foods over several weeks. Long-term, you’ll eat small, high-protein meals and avoid sugar, soda, and fried foods.

Yes we recommend you take daily vitamins for the first year after surgery to avoid nutritional deficiencies. Long term, it’s still a good idea to take a quality multivitamin, but nutritional deficiencies after a sleeve gastrectomy are rare. Our team provides guidance on exactly what you’ll need.

Gastric sleeve removes part of the stomach without rerouting the intestines. It’s less complex than bypass, with fewer long-term malabsorption issues, and typically has a faster recovery.

Gastric sleeve is a surgical procedure where about 80% of the stomach is permanently removed. In contrast, ESG is a non-surgical, incisionless procedure that uses sutures to reduce stomach size without removing any part of it. Gastric sleeve typically results in greater weight loss but has longer recovery and slightly higher risk. ESG has a quicker recovery and fewer risks but may offer more modest results.

Procedures we offer at Eviva

Our surgeons work closely with you to determine which weight loss procedure best matches your goals, medical needs, and lifestyle. From advanced laparoscopic techniques to non-surgical endoscopic procedures, each option we offer is backed by proven outcomes and long-term success. We also offer revision surgery for patients who’ve had prior procedures and need additional support.

Minimally Invasive Laparoscopic Surgeries

Gastric Sleeve (LapSleeve®)

3D illustration of a stomach after sleeve gastrectomy, showing the reduced, tube-shaped stomach with surgical sutures.
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Gastric Sleeve Resources

  • Overview: The gastric sleeve, or sleeve gastrectomy, is a laparoscopic procedure where approximately 80% of the stomach is removed, leaving a tubular “sleeve” that limits food intake.

  • How It Works: By reducing stomach size and removing the hunger-inducing hormone-producing part (fundus), it decreases appetite and promotes satiety.

  • Benefits: Patients typically experience a 25–30% total body weight loss. The procedure also improves conditions like type 2 diabetes, hypertension, high cholesterol, and sleep apnea.

  • Ideal Candidates: Individuals with a BMI over 35. It is also frequently performed on BMI between 30–35.

  • Recovery: Most patients go home the same day. Recovery involves a staged diet starting with liquids and gradually progressing to solids over several weeks.

Gastric Bypass

3D illustration of a stomach after gastric bypass surgery, showing the small pouch connected directly to the small intestine, bypassing the lower stomach.
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Gastric Bypass Resources

  • Overview: Gastric bypass is a laparoscopic procedure that alters both the stomach and small intestine to reduce food intake and calorie absorption. A small pouch is created at the top of the stomach and connected directly to the small intestine.

  • How It Works: The procedure limits how much food you can eat and bypasses part of the intestine to reduce calorie absorption. It also influences hormones involved in hunger and blood sugar regulation.

  • Benefits: Patients may lose 30–35% of their total body weight. Gastric bypass has strong results for resolving type 2 diabetes, GERD, and metabolic syndrome.

  • Ideal Candidates: Individuals with a BMI over 35, especially those with type 2 diabetes, severe acid reflux, or complex metabolic conditions.

  • Recovery: Most patients go home the same day. Recovery includes a gradual diet progression and routine follow-ups for long-term support.

Gastric Band (LapBand®)

3D illustration of a stomach with an adjustable gastric band in place, showing the band around the upper portion and connected to a port.
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Gastric Band Resources
  • Overview: The lap band involves placing an adjustable silicone band around the upper portion of the stomach, creating a small pouch to restrict food intake.
  • How It Works: The band creates early satiety by limiting how much food the pouch can hold. The tightness of the band is adjusted through a port placed under the skin.
  • Benefits: Less invasive with no stomach cutting or stapling. Adjustable and reversible. Typically results in 15–20% total body weight loss.
  • Ideal Candidates: Patients who prefer a reversible option or who may not qualify for sleeve or bypass procedures.
  • Recovery: Same-day discharge is common. Return to work within a few days. Band adjustments are performed in the clinic as needed.

Non-Surgical Endoscopic Procedures​

Endoscopic Sleeve Gastroplasty (Endosleeve)

3D illustration of a stomach after endoscopic sleeve gastroplasty (ESG), showing internal sutures reducing the stomach volume without surgical removal.
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Endosleeve Resources
  • Overview: The lap band involves placing an adjustable silicone band around the upper portion of the stomach, creating a small pouch to restrict food intake.
  • How It Works: The band creates early satiety by limiting how much food the pouch can hold. The tightness of the band is adjusted through a port placed under the skin.
  • Benefits: Less invasive with no stomach cutting or stapling. Adjustable and reversible. Typically results in 15–20% total body weight loss.
  • Ideal Candidates: Patients who prefer a reversible option or who may not qualify for sleeve or bypass procedures.
  • Recovery: Same-day discharge is common. Return to work within a few days. Band adjustments are performed in the clinic as needed.

Gastric Balloon

3D illustration of a gastric balloon placed inside the stomach to aid weight loss.
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Gastric Balloon Resources
  • Overview: A gastric balloon is a temporary device inserted endoscopically and filled with saline to occupy space in the stomach and limit food intake.
  • How It Works: The balloon takes up stomach space, promoting earlier satiety and reducing meal sizes. It is removed after approximately six months.
  • Benefits: Non-surgical and reversible. Can aid weight loss of 10–15% of total body weight when combined with lifestyle changes.
  • Ideal Candidates: Individuals seeking short-term weight loss support or those preparing for another procedure like surgery.
  • Recovery: Minimal downtime. Patients may experience nausea or discomfort for the first few days. Normal activities resume quickly.

Revision​ Procedures

Laparoscopic & Endoscopic Revision

Gastric Revision 3d Stomach
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Revision Resources

  • Overview: Revision surgery involves modifying or converting a previous weight loss procedure—such as converting a Lap Band to a Sleeve or Bypass—when initial results are inadequate or complications arise.

  • How It Works: Depending on the patient’s history and current needs, the revision may involve removing or modifying existing devices, reshaping the stomach, or rerouting the intestines.

  • Benefits: Offers a second chance at weight loss success. Can resolve issues such as inadequate weight loss, band slippage, reflux, or weight regain.

  • Ideal Candidates: Patients who had prior bariatric surgery but experienced complications, minimal results, or weight regain.

  • Recovery: Varies by procedure. Most are still performed laparoscopically with a focus on minimal downtime and tailored aftercare.

How can we help you?​