Bariatric Surgeons

Our bariatric specialists are leaders in the field nationally who are frequently called upon to present scholarly papers and conduct research. They include fellowship-trained surgeons; leaders in bariatric surgery who have years of experience performing laparoscopic and bariatric surgery, and a bariatric medicine specialist who is triple board certified with nearly 20 years in the field.

imageKonstantinos Spaniolas, MD, FACS, FASMS, is a Professor of Surgery at Stony Brook University. With nearly 15 years of experience in the field, Dr Spaniolas is a renowned specialist in bariatric, foregut and hernia surgery. He has extensive expertise in both primary and revisional bariatric surgery for adults and adolescents. Dr Spaniolas is also an expert in robotic surgery. He applies laparoscopic and robotic techniques for bariatric, reflux/GERD and hernia patients. He has the reputation of providing high quality individualized care.

Dr Spaniolas is a double Ivy League trained physician, having completed a fellowship in minimally invasive and bariatric surgery at Dartmouth and a research fellowship at Massachusetts General Hospital in the Harvard Medical School. He completed his general surgery residency at the University of Rochester in New York, where he also served as administrative chief resident. Prior to joining Stony Brook, he was an Assistant Professor of Surgery in the Division of Advanced Laparoscopic Gastrointestinal and Endocrine Surgery at the Brody School of Medicine of East Carolina University in Greenville, NC. The Brody School of Medicine was the first center in the world to report the profound effect of bariatric surgery on diabetes control and resolution. Before relocating to Stony Brook, Dr Spaniolas served as the Director of the bariatric and minimally invasive Fellowship Program and Director of Bariatric Surgery.

A committed physician-scientist, Dr. Spaniolas’ research has been presented and published widely. He is a leader in the field who serves on several committees of the American Society for Metabolic and Bariatric Surgery (ASMBS), the Society for the Surgery of the Alimentary Tract, and the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES). He is on the Editorial Board of Obesity Surgery, one of the most widely read journals in the field of bariatric surgery, and co-chairs the Research Committee for SAGES. He currently oversees the Surgical Outcomes Assessment Research (SOAR) collaborative for Stony Brook, and has published extensively in the field of bariatric, minimally invasive surgery and type 2 diabetes. Dr. Spaniolas is board certified by the American College of Surgeons (ACS) and is  a fellow of the ASMBS. He has received the ACS-RAS Leadership Scholarship Award and the SAGES Brandeis Award. 


Kinga Powers

Kinga Powers, MD, PhD, FACS a surgeon with our bariatric program and board certified by the American College of Surgeons and is an Associate Professor at Stony Brook Medicine in the Department of Surgery, Division of Bariatric, Foregut and Advanced GI Surgery. She has over ten years of experience performing advanced laparoscopic and endoscopic procedures starting with her advanced-laparoscopy and bariatric surgery fellowship at the Beth Israel Deaconess Medical Center, Harvard Medical School.  She earned her medical degree at Queen's University, Canada. Further she completed her general surgery residency and her PhD at the University of Toronto.  Dr. Powers’ doctoral work focused on cell signaling during oxidative stress and subsequently she developed an interest in surgical  education, developing models of team training and crisis management in the operating room to improve patient safety. She has presented her work at surgical meetings internationally, and her studies have pioneered new methods for laparoscopic and team skills education. She is the recipient of multiple awards for her research and patient care such as the Wyeth Scholar Award from the American College of Surgeons, The Canadian Institutes of Health Research Postdoctoral Fellowship and an Award for Dedication and Excellence in Clinical Care from the Cambridge Health Alliance.

Dr. Powers was an Associate Professor at Virginia Tech Carilion School of Medicine; where she served as a Director of a Bariatric Program. She was elected President of the Virginia Bariatric Society, a chapter of the American Society for Metabolic and Bariatric Surgery (ASMBS) in 2016-2018, and currently serves on the ASMBS Quality Improvement and Patient Safety Committee establishing evidence based clinical pathways for bariatric procedures.

Dr. Powers is as Co-Chair of the Publications Committee for The Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) and is a member of The Fundamental Use of Surgical Energy (FUSE) and Acute Care Task Force Committees, exemplifying her commitment to furthering excellence in surgical practices that lead to the best patient outcomes.

Dr. Powers is dedicated to developing clinical pathways, educational platforms, and practice models that enhance quality and safety of patient care, as well as helping patients achieve their health and lifestyle goals using advanced technologies and compassionate care. She works with the multidisciplinary team at Stony Brook Bariatric and Weight Loss Center to serve communities in Central and Eastern Long Island.

She is also a mom who cares deeply for her family, friends, and community.


Amy Rosenbluth

Amy Rosenbluth, MD, is an American Board of Surgery (ABS) certified surgeon and an assistant professor of surgery at Stony Brook Medicine.  She received her medical degree from Sidney Kimmel Medical School at Thomas Jefferson University.  Dr. Rosenbluth completed her surgical training at the Icahn School of Medicine at Mount Sinai Morningside/West General Surgery Residency before completing a fellowship in bariatric, minimally invasive, and advanced GI surgery at UT Southwestern.

Her clinical interests include bariatric, foregut, hernia, and robotic surgery.  She is a dedicated physician-educator and serves on the resident and fellow training committee of the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES).  She is also a member of the American Society for Metabolic and Bariatric Surgeons (ASMBS), American College of Surgeons (ACS), and the Association of Women Surgeons (AWS).  Her research interests include quality improvement in the field of bariatric surgery and education.