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, and has completed more than 2500 weight loss operations. Most importantly, Dr. Oliak has a track record of weight loss results and complication statistics that rank among the best in the weight loss surgery field.*

Meet Orange County Bariatric Surgeon David Oliak, MD

Dr. Oliak grew up in Kenosha, Wisconsin, attended college at Northwestern University in Chicago, (B.S. degree chemical engineering), and attended medical school at top-ranked Washington University School of Medicine in St. Louis. After medical school he completed a 6 year general surgery residency at Harbor-UCLA Medical Center in Los Angeles.

Dr. Oliak decided during his surgery residency that he wanted to specialize in laparoscopic weight loss surgery, so after his residency he continued on to a one year laparoscopic bariatric surgery fellowships (one of the first in the country) at Hackensack University Medical Center in New Jersey.

After completed his fellowship in 2002, Dr. Oliak moved back to Southern California to start his practice as a laparoscopic bariatric surgeon in Orange County and Los Angeles.

Dr. Oliak’s practic philosophy has always been to prioritize patients first. What this means to him is achieving the best possible outcomes for his patients. This is the #1 thing he would want as a patient, so this is the #1 thing he prioritizes as a surgeon.

In Dr. Oliak’s experience, quality of surgery, thorough and comprehensive patient education, frequent follow-up after surgery, and ongoing support are the key elements necessary for achieving great outcomes. These are key elements of our program.

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What is Dr. Oliak’s track record of patient outcomes? Since starting his career in 2002, his weight loss statistics and complication statistics beat the industry averages, both for gastric sleeve surgery and gastric bypass surgery.*

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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. ** Leaks can occur after gastric surgery. Past performance may not be indicative of future results. Orange County bariatric surgeon Dr. Oliak’s 0% leak rate statistic applies to primary and revision sleeve gastrectomy operations.

Schedule an educational consultation with Dr. Oliak

Learn more about weight loss surgery and our Orange County weight loss surgery program by attending a 30 minute, no-obligation, one-on-one educational consultation (or a Wednesday evening group seminar) 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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If you are interested in learning more about weight loss surgery and our program, call our office at (714) 582-2530, or send us your contact information using the form below, and we will contact you.

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