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Bariatric Surgery Educational Videos

Dr. John Cheregi and Dr. Hsin-Yi Chang sit down to answer some of the most frequently asked questions they hear from their weight loss surgery patients. 

Meet Dr. Hsin-Yi Chang of Advanced Bariatrics.

Meet Dr. John Cheregi of Advanced Bariatrics.

Why we founded Advanced Bariatrics
of Northern Illinois.

About the Advanced Bariatrics Weight Loss Program.

Who is a good candidate for weight loss surgery?

When should I consider weight loss surgery?

What is my first step to weight loss surgery?

How much weight can I lose in my first year?

What is my hospital stay going to be after weight loss surgery?


Every month, Dr. Chang & Dr. Cheregi host a FREE educational seminar.

It is a wonderful opportunity to learn how our program is dedicated to your future success and lifelong care.