Quick fixes fade. Lasting change begins here.

Woman holding oversized jeans after bariatric surgery weight loss

Trusted bariatric surgeons in Walnut Creek & Brentwood — 20+ years of experience, 2,000+ life-changing results.

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MBSAQIP Accredited CenterASMBS American Society for Metabolic & Bariatric Surgery
Woman holding oversized jeans after bariatric surgery weight loss
Logo for BASS Medical Group's Bariatric Surgery & Weight Loss Management Services.

About BASS Medical Group Bariatric Surgery & Weight Management

Serving patients across California with clinics in Walnut Creek and Brentwood

At BASS Medical Group, our bariatric surgeons have been helping patients achieve lasting weight-loss success since 2002. With more than 2,000 procedures performed, our team brings extensive experience, collaboration, and attention to detail that ensures safe, effective outcomes.

Our patients consistently achieve greater weight loss than the national average, with complication rates significantly lower than most programs. More importantly, many describe their results as truly life-changing — restoring health, energy, and confidence.

Call 925-940-1052

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Patient Success Stories

Bariatric Surgery & Obesity Specialists | Weight-Loss Surgery Center clinics in Walnut Creek and Brentwood California

Read More Success Stories

Before and after photos showing Gina’s bariatric transformation.

Bariatric Surgery Success Story: Gina Molina Lost 110 Pounds

Before-and-after photos of Liz’s weight-loss surgery transformation.

Liz's Bariatric Surgery Success Story

Before and after photos of Kathy, who lost 179 pounds after gastric sleeve surgery.

Gastric Sleeve Surgery Saved My Life

Before and after photos of Denise Brown, a 57-year-old gastric sleeve patient who lost 100 pounds.

57-year-old Gastric Sleeve Patient Drops 100 Pounds After Surgery

Before-and-after photos showing Elizabeth’s gastric sleeve transformation.

Gastric Sleeve Surgery Helps Patient Lose 120 Pounds and Kick Diabetes

Read More Success Stories

Bariatric Procedures

Bariatric Surgery & Obesity Specialists | Weight-Loss Surgery Center clinics in Walnut Creek and Brentwood California
Weight-Loss Procedure

Gastric Sleeve

In a sleeve gastrectomy (gastric sleeve), a majority of the stomach is separated and removed from the body. The gastric sleeve involves removing a portion of the stomach.

Weight-Loss Procedure

Gastric Bypass

In the roux-en-Y gastric bypass, the surgical team at BASS Medical Group partitions the stomach, creating a small upper pouch and a large lower pouch referred to as the gastric remnant.

Weight-Loss Procedure

Gastric Band

Commonly known as the lap-band, a rubber-like ring containing an inflatable balloon is placed around the upper part of the stomach and affixed in place. This creates a small stomach pouch similar to the small pouch created surgical lyin the gastric bypass procedure.

Weight-Loss Procedure

Duodenal Switch

This procedure begins with a sleeve gastrectomy. The valve that releases food to the small intestine is left, along with the first part of the small intestine, called the duodenum. The surgeon then closes off the middle section of the intestine and attaches the last part directly to the duodenum.

Dr. Brian Chin with a bariatric surgery patient after a successful weight loss surgery procedure.
BASS Bariatric Weight-Loss Surgery Logo

Life after Bariatric Surgery

After Surgery
At Home
Checkups

Most patients spend just one night in the hospital and are discharged the next day. Because the operation is performed laparoscopically, pain is usually well controlled with oral medication. Some may experience temporary “gas pain,” which improves within a day or two.

Key steps after surgery:

  • Begin walking the same day (helps relieve gas pain and reduces risk of blood clots).
  • Start with sips of water → then clear liquids.
  • If tolerated, progress to full liquids (soups, broths) the next day.
  • Nurses will encourage frequent walking in the halls.

Most patients stay on a full liquid diet for two weeks after surgery. Gradually increase walking distance each day to build stamina.

Recovery timeline at home:

  • 2 weeks → Follow-up visit, may begin soft solids if cleared by your surgeon.
  • 2–6 weeks off work → Depending on job demands (desk jobs often return sooner).
  • 4+ weeks → Light gym activity (weights, swimming, yoga) may resume if approved.
  • Continue walking daily as the foundation of recovery.

Follow-up care is essential for long-term success and safety.

Your schedule:

  • 2 weeks post-op → Initial check with your surgeon.
  • 3 months, 6 months, 12 months → Weight, blood work, and nutritional status checked.
  • Yearly → Ongoing monitoring and support.

Nutritional care:

  • Take a daily multivitamin for life.
  • Additional supplements prescribed if needed.
  • Nutritionists available for diet adjustments and questions.

Our Recent Blogs

Bariatric Surgery & Obesity Specialists | Weight-Loss Surgery Center clinics in Walnut Creek and Brentwood California
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Why Is Lap Band Surgery Rarely Performed Today?

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Dumping Syndrome After Bariatric Surgery: Symptoms, Causes, and How to Manage It

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