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.



Aurora Pryor, MD, MBA, FACS directs the Bariatric and Metabolic Weight Loss Center. Dr. Pryor, Professor of Surgery, Chief of Bariatric, Foregut and Advanced GI Surgery, is a fellowship-trained, internationally recognized leader in minimally invasive and bariatric surgery. She completed her surgery residency and fellowship at Duke University Medical Center, where she remained on the faculty for nearly a decade. While at Duke, Dr. Pryor served as Chief of General Surgery at Durham Regional Hospital and she was co-Director of the Duke Metabolic and Weight Loss Surgery Program.  She participated in the Chancellor’s Clinical Leadership Program in Academic Medicine.  She also received awards including the Association for Academic Surgery Medical Student Research Award, the American Federation for Clinical Research Trainee Investigator Award for Excellence in Scientific Research and the Four Schools Physician Scientist Training Program Fellowship.  She has performed more than 2,000 surgeries.

A patent holder for several surgical technologies, Dr. Pryor is active in research with an extensive list of professional publications, prominence in multiple professional societies, and more than 20 years of experience. She serves as the Treasurer for the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) and on the executive council of the American Society for Metabolic and Bariatric Surgeons (ASMBS), as well as executive liaison for the ASMBS Emerging Technologies and New Procedures and Obesity Prevention committees. Since joining Stony Brook in 2011, Dr. Pryor has been instrumental in the development of the Bariatric and Metabolic Weight Loss Center and has recruited and led our committed, comprehensive staff.



imageKonstantinos Spaniolas, MD, FACS, FASMS, is the associate director of the Bariatric and Metabolic Weight Loss Center. A specialist in bariatric and foregut surgery and a Professor of Surgery at Stony Brook, Dr. Spaniolas has nearly a decade of experience in the field. He earned his medical degree from University of Athens School of Medicine, Athens, Greece. His general surgery residency was completed at University of Rochester Medical Center, Rochester, NY, where he also served as chief resident. He completed his fellowship in minimally invasive and bariatric surgery at Dartmouth Hitchcock Medical Center, Lebanon, NH, and a research fellowship at Massachusetts General Hospital, Harvard Medical School, Boston. 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, East Carolina University, Greenville, NC, where he also served as co-director of the bariatric and minimally invasive fellowship program and was acting 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 the Emerging Technologies and Procedures Committee of the American Society for Metabolic and Bariatric Surgery (ASMBS), and is a member of the Society for the Surgery of the Alimentary Tract, the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) and the International Federation for the Surgery of Obesity. He currently directs 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 has received the ACS Resident and Associate Society Leadership Scholarship 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.