Bariatric Surgery Specialist

Barrington Surgeons are experts in bariatric surgery. Drs. Hoeltgen and Wool are the only recognized American Society for Metabolic and Bariatric Surgery (ASMBS) Center of Excellence Verified surgeons at Advocate Good Shepherd Hospital. They are experts in sleeve gastrectomy, gastric bypass, adjustable gastric banding, ReShape gastric balloons, and revisional surgery.

Bariatric Surgeons

Barrington Surgeons, LTD

Daniel Hoeltgen, MD:

  • Bariatric Surgery Medical Director at Good Shepherd
  • Completed first bariatric operation at Good Shepherd
  • Over 20 years of experience in bariatric surgery.

Daniel Wool, MD:

  • Over 10 years of bariatric surgery experience
  • Completed bariatric fellowship at Stanford University under supervision of previous ASMBS president

Bariatric Surgery Q & A

What Are Bariatric Surgeries?

Morbid obesity is a growing problem in the United States. Bariatric surgery is the only proven method of enduring weight loss. It is a powerful tool when combined with regular exercise and dietary changes. Bariatric surgery can help cure or improve: diabetes, high blood pressure, acid reflux, sleep apnea, high cholesterol, degenerative arthritis, depression, and fatty liver disease. In addition, bariatric surgery may also improve your quality of life, reduce the risk of developing certain cancers, and increase your life expectancy. 

Bariatric surgeries are used to limit the space available in the stomach to help patients who are overweight to eat less and build healthier diets. Some of the most common bariatric surgeries include the laparoscopic adjustable band (lap band), a gastric bypass, and a gastric sleeve. Surgeries are performed either laparoscopically. Dr. Hoeltgen and Dr. Wool use da Vinci Robotic surgery technology for many of these procedures.

What Is a Laparoscopic Adjustable Gastric Band?

A laparoscopic adjustable band, or lap-band, is a surgically inserted band used to help patients lose weight. The lap band reduces a patient’s stomach capacity by placing a band around the entry point to the stomach, only allowing a small amount of food to enter at a time. This reduces the speed at which a person eats as well as the amount of food that can be eaten in one sitting. Eating slowly allows the stomach more time to send satiety signals to the brain, allowing the patient to feel full faster and stay full for a longer period of time.













What Is a Laparoscopic Gastric Bypass?

This is the most tried and true method of surgery. Patients with a BMI (body mass index) of more than 40 and who suffer from diabetes are the prime candidates for this type of surgery. The procedure is done by making the stomach smaller by creating a small pouch at the top. This pouch is connected directly to the middle portion of the small intestine. The food bypasses the rest of the stomach and the upper portion of the small intestine. This procedure is most often done with small laparoscopic instruments. Barrington Surgeons is one of the select few practices to perform this procedure using the da Vinci surgical robot. Patients lose approximately 75 percent of their excess weight within the first 1 to 2 years after surgery.














What Is a Laparoscopic Sleeve Gastrectomy?

This bariatric operation has become the most popular in the United States. In this procedure, weight loss is achieved by removing more than 85 percent of the stomach. This procedure creates gastric restriction as well as hormonal changes. In some cases, the sleeve gastrectomy can be later converted to a gastric bypass in order to achieve greater weight loss. The Sleeve Gastrectomy can typically result in 60 percent of excess weight loss in the first year postoperatively.














What is the ReShape Procedure?

Barrington Surgeons was the first in Illinois to place the ReShape intragastric balloon. FDA approved in 2015, the ReShape procedure is intended for patients with a body mass index (BMI) between 30–40 kg/m2. Depending on your height, this generally corresponds to being 30 to 100 pounds overweight. In a recent study, patients lost more than twice as much weight, 28 lbs average, with the ReShape procedure than those who use diet and exercise alone. Our practice has seen even greater weight loss in our patients. Most ReShape patients keep the weight off or continue to lose, even after the balloons are removed.

Who Benefits from Bariatric Surgeries?

Bariatric surgery is not for everyone. Patients who meet the following criteria are most likely to find success through these treatments:

  • Have a BMI of 35 to 39 with an obesity-related condition
  • Have a BMI > 40
  • Are at least 18 years old
  • Are not currently pregnant
  • Are prepared to make major life changes
  • Do not drink alcohol excessively
  • Other serious attempts to lose weight have been unsuccessful
  • Not suffering from any type of condition which could have caused you to gain weight
  • Are in good overall health

Learn more about Bariatric Surgery Here!


Words from our patients

  • Yelp

    "I am coming up on my 1 year anniversary, post major surgery that without what Dr. Wool did, I wouldn't be here today"

    Michael M.
  • Yelp

    "They get 5 stars in my book ALL AROUND: receptionists, waiting room, Doctors, cleanliness & friendliness"

    Jennifer L.
  • Vitals

    "Dr. Holtgen is a great surgeon who takes the condition of his patients very seriously"

  • RateMDs

    "Dr. Holtgen is a great surgeon who takes the condition of his patients very seriously...I completely trust this surgeon"

  • RateMDs

    "Very impressed with Dr. Hoeltgen. Very professional. Felt completely safe with him. Did a great job with my very serious surgery"

  • Vitals

    "Dr. Wool and his practice were outstanding! ...I admired his positive attitude. Any concerns I had he helped put my mind at ease"

  • Vitals

    "Dr. Wool is an excellent physician and surgeon. He is very thorough and takes the right amount of time explaining everything"

  • Vitals

    "had a really great experience! very professional, very sharp and just on top of it"

Barrington Surgeons, LTD
27750 West Highway 22, Suite 130
Barrington, IL 60010
Phone: 847-380-2250
Fax: 847-381-6084
Office Hours

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