Meet Our Team

Meet Our Team

Medical Director Gail M. Wynn, MD, FACS

Gail M. Wynn, MD, FACS is a board certified general surgeon with a special focus on weight loss surgery and advanced laparoscopic surgery. She is co-founder of the Christiana Institute of Advanced Surgery (CHRIAS) and is also the Medical Director of Bariatric Surgery at Saint Francis Hospital. She has performed over 2000 weight loss surgeries. Along with her partners, Drs. Irgau and Peters, she is committed to providing excellent surgical care and a comprehensive surgical weight loss program in a caring, compassionate environment.

Dr. Wynn did her medical training at Southern Illinois University School of Medicine where she graduated with honors. She completed her surgical training at the Medical Center of Delaware, and has authored numerous publications and academic presentations. Dr. Wynn was voted one of Delaware’s Top Docs for Abdominal surgery from 2007 to 2011 by Delaware Today magazine. She was also voted Delaware’s Top Bariatric Surgeon from 2011 to 2015.

Isaias Irgau, MD, FACS, FRCS (Ed)

Dr. Isaias Irgau is president and co-founder of the Christiana Institute of Advanced Surgery (CHRIAS). He has extensive experience with minimally invasive weight loss surgery. In conjunction with his associate, Dr. Gail Wynn, he was the first to perform the LAP-BAND® procedure and the first to firmly establish the laparoscopic approach to Roux-n-Y gastric bypass in the state of Delaware. Dr. Irgau has personally performed over 2,000 bariatric procedures with excellent results. He and his associate Dr. Wynn started and established the Bariatric Surgery Program in two of Delaware’s leading medical centers – Christiana Hospital and Saint Francis Hospital. With the addition of Dr. Michael Peters Jr. to CHRIAS, they eventually led the two hospitals to earn the prestigious designation of Center of Excellence in Bariatric Surgery.

Dr. Irgau graduated from Bristol University Medical School in England and has a double fellowship with the Royal College of Surgeons of Edinburgh and the American College of Surgeons. He is board certified in General Surgery with the American Board of Surgery.

Dr. Irgau is author of numerous publications and academic presentations and was elected Young Surgeon of the Year by the Delaware Chapter of the American College of Surgeons in 2006.

Michael Peters Jr., MD, FACS, FASMBS

Michael Peters Jr., MD, FACS, FASMBS is the Medical Director of Bariatric Surgery for Christiana Care Health System. He is a board certified general surgeon with fellowship training in advanced laparoscopic surgery and bariatric surgery.

Dr. Peters received his medical degree from Thomas Jefferson Medical College in 1998 and completed his general surgery training at the Pinnacle Health Hospitals in Harrisburg, Pennsylvania in 2003. He completed a clinical and research fellowship in advanced laparoscopy and bariatric surgery at the Michael DeBakey Surgery Center of Excellence at the Baylor College of Medicine in Houston, Texas in 2004 and joined the Christiana Institute of Advanced Surgery on completion of his fellowship.

Dr. Peters was the first surgeon in the state of Delaware to perform a sleeve gastrectomy procedure for weight loss. Along with his partners, he is committed to providing excellent surgical care and a comprehensive surgical weight loss program in a caring, compassionate environment.

Caitlin Halbert, DO, MS

Caitlin Halbert, DO, MS is a General Surgeon with an interest in Bariatric and Foregut surgery. After completing a Masters of Science in Biomedical Sciences, Dr. Halbert received her medical education at the Philadelphia College of Osteopathic Medicine. She went on to complete her General Surgery residency training at Christiana Care Health System in Delaware. She then received specialty training at Stony Brook University Hospital, completing a fellowship in Minimally Invasive Bariatric and Advanced Gastrointestinal Surgery.

Dr. Halbert specializes in bariatric surgery, including laparoscopic sleeve gastrectomy and roux-en-y gastric bypass. Her practice also includes foregut surgery, with a focus on the treatment of achalasia, gastrointestinal reflux disease, and hiatal and diaphragmatic hernias.

Dr. Halbert is actively involved in national organizations, including the Society of American Gastrointestinal and Endoscopic Surgery (SAGES) and the American Society of Metabolic and Bariatric Surgery (ASMBS). She has authored several publications and has presented at a number of regional and national conferences.