WBI Surgical Weight Loss | Bariatric Clinic


Western Bariatric Institute (WBI) is an established, highly experienced multidisciplinary weight loss surgery center based in Reno, Nevada. Our bariatric clinic began in 2000 as a division of Western Surgical Group, the largest surgical practice in Northern Nevada.

Outstanding Outcomes

Western Bariatric Institute is a leader in the field of bariatric surgery and has a long track record of professional care, compassionate service, and outstanding outcomes.

Our Surgeons

Three surgeons, John Ganser, M.D., Mark Kozar, M.D. and Robert Watson, M.D., perform the surgical procedures and supervise the care of all patients. Our physicians are all experienced Board Certified surgeons, are Fellows with the American College of Surgeons, and have been accredited as “Center of Excellence” physicians through the American Society for Bariatric Surgery.


WBI serves as one of the most comprehensive bariatric centers in the country. With strong collaboration with three major medical centers, our surgeons and programs offer the advantages of multidisciplinary care and consultations. Multiple ongoing research projects in conjunction with collaborating physicians help us learn more about obesity, its causes and treatments.

Comprehensive Program

WBI sponsors frequent support groups, an important component of long term success after gastric bypass surgery, and other support programs to honor our commitment to the long term success of our weight loss surgery patients.

Leaders in Technology-Minimally Invasive, Laparoscopic Surgery

Our surgeons specialize in minimally invasive, or laparoscopic, weight loss surgery. The procedures that are performed by our surgeons are the Roux-en-Y Gastric Bypass, Gastric Banding and Sleeve Gastrectomy. Individuals interested in learning more about weight loss surgery are asked to watch our online seminar or one of our live webinars.



“Before my surgery I was almost 260lbs and suffered with GERD, PCOS, and Sleep Apnea having to use oxygen whenever I slept. I was miserable. I am now able to do things that I couldn’t before like tie my shoes and enjoy my time with my husband and kids. I am always asked if I would have the surgery again and my answer is always, in a heartbeat!”

Raylena, Lost 100 lbs, Gastric Bypass

“For years I tried every diet possible with no success. It hasn’t been an easy road, but I am thankful to have gone through the process and come out the other side a healthier woman. But most of all, I now love the girl staring back at me in the mirror. I am 110lbs lighter and I couldn’t be happier!”

Debbie, Lost 110 lbs, Gastric Bypass

“Today, I am so happy about how I look and feel. I strive to live more healthy every day. I would do it all over again. I would like to thank Dr. Ganser and the staff at WBI for their outstanding care and concern for me. It has been a truly transforming journey!”

Donna, Lost 141 lbs, Gastric Bypass

“Prior to surgery I had severe sleep apnea, borderline diabetic, cardiomyapathy, joint and back pain. They are all gone now and I now lead an active and pain free lifestyle.”

Craig, Lost 120 lbs, Sleeve Gastrectomy

“I had gastric bypass surgery eight years ago and lost the weight that was killing me. I am now healthy and I feel terrific. I work hard every day to maintain my weight loss. I make the right food choices and I exercise almost every day.”

Norma, lost 195 lbs Gastric Bypass