Dr. Oliak is a board certified, fellowship trained surgeon who specializes in laparoscopic and robotic weight loss surgery. He has been in practice in Orange County, California, since 2002, has completed more than 3000 operations, and has a track record of excellent patient outcomes.*

David Oliak, MD – Background

Dr. Oliak grew up in Wisconsin, and attended college at Northwestern University in Chicago, where he obtained his Bachelor of Science degree in Chemical Engineering.

After college he attended prestigious Washington University in St. Louis for his medical degree, and Harbor-UCLA in Los Angeles for his General Surgery residency.

He continued on after his surgery residency to one of the first laparoscopic weight loss surgery fellowships in the country, at Hackensack University Medical Center in New Jersey.

After completing his fellowship training in 2002, he started his career as a laparoscopic weight loss surgeon in Los Angeles and Orange County.

David Oliak, MD – Practice Philosophy

Dr. Oliak’s simple practice philosophy has always been to treat patients how he would want to be treated himself.

Dr. Oliak would want the best possible surgery, and the best possible patient care, to maximize his chances to achieve the best possible outcome.

This is what he strives to do for his patients.

Since starting his weight loss surgery practice in 2002, Dr. Oliak has completed >3000 operations, and has established a record of weight loss and complication statistics that are significantly better than the industry averages.*

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David Oliak, MD – Professional Accomplishments

Dr. Oliak was the first Orange County bariatric surgeon to complete a laparoscopic bariatric surgery fellowship, and one of the first Orange County bariatric surgeons to routinely perform laparoscopic gastric bypass surgery rather than open gastric bypass surgery.

Dr. Oliak has developed two successful center of excellence bariatric programs in Orange County, one at Chapman Medical Center, and one at Placentia-Linda Hospital.

Dr. Oliak has published numerous outcomes-focused research studies, including studies on the learning curve for laparoscopic bariatric surgery, studies on outcomes for higher BMI patients, and studies on outcomes for older patients. Dr. Oliak has published his research in numerous scientific journals and has presented his data at national and international surgical meetings.

Orange County bariatric surgeon Dr. Oliak is a sought out weight loss surgery expert. He was an instructor for surgeons learning to perform LAP-BAND® surgery. He is a bariatric surgery consultant and bariatric surgery expert witness for bariatric surgery malpractice matters. He has appeared on national television shows, including The View (video clip) and The Tyra Banks Show (video clip), and on local news stations, including KCAL and CBS.

* Patient results vary after weight loss surgery.

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Learn more about weight loss surgery and our Orange County weight loss surgery program by attending a private educational consultation with Dr. Oliak in Brea or Irvine. Call our office or send us a contact form today!

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Dr. Oliak’s Blog

Orange County bariatric surgeon Dr. Oliak

How to Choose the Best Weight Loss Surgery for You

Choosing the weight loss operation best suited for you typically means choosing between the sleeve gastrectomy operation and the gastric bypass operation. These two operations are by far the most popular weight loss operations performed in the United States. Before we discuss the strengths and weaknesses of the gastric sleeve and


Gastric Sleeve Surgery for Patients with Low Initial BMI (BMI 30-35)

I recently wrote a post entitled “Weight Loss Surgery for Low BMI Patients (BMI 30-35).” In this post I reviewed the guidelines published by the ASMBS for weight loss surgery for low BMI patients, and I reviewed some recent published studies on weight loss surgery for low BMI patients. In


The cost? Losing weight and gaining health is more attainable than you think.

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