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GI Metabolic and Bariatric Surgery

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About Us

The Weill Cornell Medicine GI Metabolic and Bariatric Surgery Program is dedicated to providing the most advanced diagnostic and surgical techniques to help you to accomplish your individual health goals.

The decision about whether to undergo surgery is often complex and very personal, which is why our team of world-renowned surgeons and clinicians provide individualized care alongside the latest advances in medicine.

Our specialties include:

  • Laparoscopic and robotic bariatric surgery, which uses the most advanced techniques to perform weight loss surgery
  • Metabolic surgery, which aims to put type 2 diabetes into long lasting remission
  • Minimally invasive gastrointestinal surgery, which addresses a broad variety of disorders, ranging from hernias to problems that arise in the stomach, gall bladder, esophagus and intestine
  • Medical weight management: intensive medical treatment for obesity including lifestyle counseling, individualized nutrition and physical activity recommendations, and medication management.

Our use of cutting-edge, minimally invasive methods means small incisions, a short hospital stay (if any), and a quicker recovery from your operation. All surgery is performed at NewYork-Presbyterian, the #1 hospital in New York City for 17 years in a row. 

In addition to our surgical expertise, we also offer nutritional guidance and support groups as part of our comprehensive approach.

Contact us today to schedule a consultation or to learn more about our services.


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Dr. Gregory Dakin discusses Weill Cornell Medicine's minimally invasive approach, which results in less pain, shorter hospital stays and quicker recovery time.

What Our Patients Are Saying


"Dr. Afaneh is extremely knowledgeable and personable, clear in conveying information and decisive in his recommendations. He is first rate."

Apr 24, 2021
Source: Healthgrades
Talking about Rasa Zarnegar, M.D.

"I am going to have surgery for reflux. The minute I spoke to him I knew he would be the surgeon to operate. He’s super nice, extremely knowledgeable and I felt immediately at ease with having this surgery and him being the surgeon."

Apr 23, 2021
Source: Healthgrades
Anthony Velez

"Very awesome he did my endoscopy turn out good he is great at explaining your situation to u he cares alot about his patience thanks doc...."

Oct 15, 2020
Source: Google
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