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Experienced Surgeons

At DayOne, we are committed to you and your health - providing only the highest quality of care to our patients. Quality care means having the best surgeons with the expertise and results that can help ensure each one of our patients acheives the most successful possible outcome.

All of our surgeons have years of training and extensive experience in the areas of bariatric and minimally invasive (laparoscopic) surgery. Their state-of-the-art surgical techniques, combined with the unique characteristics of the Lap-Band system, enable patients to experience shorter surgery times, fewer complications, quicker recoveries and most importantly, successful weight loss outcomes.


Surgeon in Profile: Dr. Jonathan A. Myers - DayOne Chicago


Dr. Myers Dr. Myers, DayOne’s medical director, of the Chicago clinic has received special training in Lap-Band surgery. He completed his fellowship training in Minimally Invasive Surgery at Loyola University Medical Center and performed his residency at Rush University Medical Center and Cook County Hospital. As a resident, Dr. Myers achieved many honors. He was Chief Administrative Resident, was awarded the Society of Laparoendoscopic Surgeons’ Outstanding Laparoendoscopic Surgeon Award and was credited with developing the Minimally Invasive Training Center at Rush.


Dr. Myers is board certified in General Surgery and is currently an Assistant Professor of Surgery at Rush Medical College. His special interests include: Minimally Invasive Surgery, Surgery of the Gastrointestinal Tract, and Biliopancreatic Surgery.  In addition to laparoscopic adjustable gastric banding, he performs laparoscopic esophagectomy, gastrectomy, and pancreas resection as well as other new and innovative minimally invasive procedures.


Dr. Myers has published numerous articles in peer reviewed  journals, book chapters, and presented his research at national meetings, including the Society of American Gastrointestinal and Endoscopic Surgeons and the American Society for Bariatric Surgery.

Professional Affiliations:

  • American College of Surgeons
  • Society of American Gastrointestinal Surgeons
  • Society of Laparoendoscopic Surgeons
  • Association for Surgical Education
  • Chicago Surgical Society


Surgeon in Profile: Dr. Enrique F. Elli - DayOne Chicago


Dr. Elli One of the first surgeons trained in a two year fellowship in Robotics and Bariatric Surgery at the Minimally Invasive Surgery Center at University of Illinois at Chicago, Dr. Elli, completed his general surgery residency at the Department of Surgery at UIC.

He was previously trained at the University of Buenos Aires, where he obtained his title of Gastrointestinal Surgeon by the Argentinean Surgical Association. He later served as Coordinator of Bariatric Surgery at the University of Buenos Aires Teaching Hospital.

Dr. Elli joined the division of General, Minimally Invasive, and Robotic Surgery at the University of Illinois at Chicago where he acts as an Assistant Professor in Surgery.

He has a broad experience in the entire range of general and Minimally Invasive surgery with special attention on robotics, foregut surgery, hepatobiliary, solid organ, hernia repair as well as bariatric surgery offering minimally invasive Lap Band, Gastric Bypass and Sleeve Gastrectomies and Single Incision Laparoscopic Surgery (SILS).

He has more than 9 years experience in Bariatric Surgery, especially Lap Band surgery, being one of the first surgeons during his training to perform outpatient Lap Band.

Dr. Elli has published numerous publications in peer reviewed journals. He also presented his work at national and international meetings, and has co-authored several book chapters in surgical textbooks.

Professional Affiliations:

  • Society of Surgery of the Alimentary Tract (SSAT)
  • Society of American Gastrointestinal Endoscopic Surgeons (SAGES)
  • Associate Fellow of the American College of Surgeons (ACS)
  • The Warren Cole Association, UIC Alumni Associaton