Siva Vithiananthan, MD FACS
  • Chief of Surgery, Cambridge Health Alliance
  • Cambridge Health Alliance
  • Cambridge, MA United States


iva Vithiananthan, MD FACS FASMBS FICS, is an academic minimally invasive, robotic surgeon specializing in Bariatric and Metabolic Surgery. He is currently the Chief of Surgery at Cambridge Health Alliance and faculty member at Harvard Medical School. He is an adjunct Professor of Surgery at Alpert Medical School at Brown University. He received his medical degree from Columbia University’s College of Physicians and Surgeons and is board certified in general surgery and surgical critical care. He is fellowship trained in advanced laparoscopic surgery and surgical critical care. He is a longstanding member of ASMBS and IFSO. In the last decade, he led the changes in the bariatric surgical programs in Rhode Island’s largest health system- Lifespan Heath system. He was chosen as one of the inaugural site- reviewers for the American College of Surgeons/ASMBS accreditation process for Metabolic and Bariatric Surgery Quality Improvement Program. Dr. Vithiananthan partnered with device Industry for innovation in new surgical technology for the treatment of obesity. He is a co-author of multiple patents that came out of this collaboration. He also serves on the editorial board of Journal of Surgery of Obesity and Related Diseases, as well as Journal reviewer for other peer-reviewed journals such as Surgical endoscopy and Obesity Surgery. Dr. Vithiananthan serves in leadership capacities in many national and international surgical societies and is invited to offer his expertise in training surgeons in many countries. Dr. Vithiananthan was the Site-Director of the Brown Surgical Residency and Medical Student Programs at The Miriam Hospital in Rhode Island and servedin the leadership capacities at Alpert Medical School at Brown University.