Bariatric Weight-Loss Surgery - Community Hospital of the Monterey Peninsula

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Bariatric weight-loss surgery

Bariatric weight-loss surgery

Have you tried to lose weight with diet or exercise and been unsuccessful? If you’re struggling with obesity, you may be a candidate for weight-loss surgery, also known as bariatric surgery.

At Community Hospital, we provide safe bariatric weight-loss procedures performed by compassionate, experienced surgeons in Monterey County – most commonly laparoscopic gastric bypass and sleeve gastrectomy. The program is accredited by the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP), a distinction earned by programs that provide superior surgical care and achieve top levels of performance.

Is bariatric surgery right for you?

Bariatric surgery is designed to help people lose and keep off large amounts of weight to improve health and quality of life. Being severely overweight also increases the risks of heart disease, high blood pressure, diabetes, arthritis, sleep apnea, cancer, and depression.

You may qualify for bariatric surgery at Community Hospital if you have:

  • Body mass index (BMI) between 35 and 40 and two severe, obesity-related illnesses, such as diabetes, sleep apnea, high blood pressure, joint disease requiring joint replacement, or heart disease
  • Body mass index higher than 40
  • Tried to lose weight without success

Prospective patients can learn more on our frequently asked questions (FAQ) page.

Find out your BMI using this calculator, provided by the U.S. department of Health & Human Services.

How can you learn more about bariatric surgery?

People interested in bariatric surgery are invited to attend a free informational seminar, held in two convenient locations – at the Ryan Ranch Outpatient Campus in Monterey, and Montage Wellness Center in Salinas.

Care and resources 

Group Meeting

After attending one of our informational seminars, prospective patients:

  • Are evaluated individually by a surgeon
  • Receive dietary and psychological counseling
  • Undergo medical testing to assess overall health and fitness for surgery

Prospective patients are also encouraged to attend a support group meeting before surgery to hear from people who have undergone bariatric surgery.

What types of bariatric surgeries are performed?

  • Laparoscopic gastric bypass - The most common bariatric procedure, gastric bypass involves creating a new, smaller stomach pouch to facilitate eating smaller meals, which results in consuming fewer calories.
  • Sleeve gastrectomy - This procedure involves removing 80 percent of the stomach, limiting the volume of food that can be consumed. 

We also perform revisional weight-loss surgery when necessary and we have a special interest and expertise in caring for seriously overweight people who need non-weight-loss surgery, as well.

Why choose Community Hospital's program?

Community Hospital’s bariatric program started in 2001 and since then more than 2,000 weight-loss surgeries have been done. In addition to surgical expertise, our comprehensive program includes consultation with dietitians, psychologists, physical therapists, and multiple support groups, enabling us to care for all of the needs related to undergoing weight-loss surgery.

The bariatric program is directed by Dr. Steven S. Chang, who completed a fellowship in minimally invasive/bariatric surgery at University of California San Francisco and Fresno and is board-certified in general surgery. Dr. Chang is a member of the American Society of Metabolic and Bariatric Surgery.

Mark Vierra, MD, has performed bariatric surgery since 1991, when he established the bariatric surgery program at Stanford University Medical Center. In 2001, he moved his practice to Monterey, and has performed more than 3,350 bariatric procedures.

Patient success stories

Janeen TuitupouCommitment and support

"It’s the first time I feel confident I will never have to worry about my weight again. I know what to do, and I have the resources to help me do it." - Janeen Tuitupou, patient

Read more

Delia Edeza

Weight-loss success

Delia Edeza's decision to have weight-loss surgery didn't come easily.

Read more

Debbie Tracy

Bariatric surgery is life-changing

Debbie Tracy lost weight and was able to give up 11 medications, including insulin as a result of her bariatric surgery.

Read more

Vivian Duffy

A lot to lose

Learn how Vivian Duffy, a single mother of three lost 134 pounds and the threats of diabetes and high blood pressure have subsided.

Read more

Contact us

If you think bariatric surgery might be right for you, call us for more information.

(831) 649-0808


Sign up for a free informational seminar.

Register today


View all of our support groups.

Learn more

Bariatric surgeons

Mark Vierra, MD photo

Dr. Mark Vierra
(831) 649-0808

Dr. Chang

Dr. Steven Sung Yul Chang
(831) 649-0808

Monterey County Surgical Associates

MBSAQIP

Aspire Health Plan

Montage Wellness Center

Central Coast Health Connect

Community Health Innovations