Nissin Nahmias

Nissin Nahmias

Nissin Nahmias, MD


About Me

Dr. Nissin Nahmias is a board-certified surgeon with years of experience performing endoscopic procedures and minimally invasive bariatric surgeries. He is committed to providing compassionate, comprehensive, personalized care, performing services in a respectful, warm manner in advanced, modern facilities.

After residency, Dr. Nahmias was trained in the techniques of bariatric surgery by two of the nation’s pioneers of academic bariatric surgery, Dr. James W. Maher and Dr. John M. Kellum, at the prestigious Virginia Commonwealth University, one of the country’s leading institutions in the development of the field of bariatric surgery.

Dr. Nahmias is a member of many professional physician organizations, including the American Society for Metabolic and Bariatric Surgery where he serves on the Bariatric Surgery Training Committee and the International Federation for the Surgery of Obesity and Metabolic Disorders where he serves on the Investigational Surgical and Endoscopic Procedures Committee.

He has received many awards throughout his career, including several Patients' Choice and Compassionate Doctor awards and the On-Time Doctor award.


English and Spanish

Special Interests

  • Obesity
  • Diabetes
  • Metabolic disorders
  • Metabolic syndrome
  • Endoscopy
  • Bariatric surgery
  • Metabolic surgery


  • Bariatric Surgery
  • General Surgery


Medical School

Universidad Anahuac Escuela de Medicina


Albert Einstein Medical Center


Virginia Commonwealth University- Medical College of Virginia

Published Work

Image Of The Month, An Unusual Case Of Amyand’s Hernia, Unique Diagnostic And Therapeutic Considerations. Nissin Nahmias, MD, Laura Kaplan, MD (1), Kiranmayi Muddasani, MD. University of Connecticut Department of Surgery, Hartford Hospital Radiology Residency Program (1) St. Francis Hospital and Medical Center. Hartford, CT. JAMA Surgery 2013; 148(6): 573. doi:10.1001/jamasurg.2013.304a.

Comment on:

Overcoming The Learning Curve Of Laparoscopic Roux-en-Y Gastric Bypass: A 12-year experience. Nissin Nahmias, MD. Surgery for Obesity and Related Diseases 2013 Nov-Dec;9(6):872-3. doi: 10.1016/j.soard.2013.02.004. Epub 2013 Feb 13.

Drain Amylase Levels Are An Adjunct In Detection Of Gastrojejunostomy Leaks After Roux-en-Y Gastric Bypass. James W. Maher, MD, FACS, William Bakhos, MD, Nissin Nahmias, MD, Luke G. Wolfe, MS, Jill G. Meador, BSN, Nancy Baugh, MSN, John M. Kellum, MD, FACS Journal of the American College of Surgeons Vol. 208 Issue 5 pgs: 881-884 May 2009.

Management Of Ventral Hernias At The Time Of Gastric Bypass. Tejwant Datta MD, Nissin Nahmias MD, Alfred Trang MD, Ramsey Dallal MD Albert Einstein Healthcare Network. Philadelphia, PA. Surgical Endoscopy March 11, 2008 (0930-2794 (Print) 1432-2218, Online).

Back To Basics -Clinical Diagnosis In Bariatric Surgery. Routine Drains And UGI Series Are Unnecessary. Ramsey M. Dallal MD, Linda Bailey PA-C, Nissin Nahmias MD Albert Einstein Healthcare Network. Philadelphia, PA. Surgical Endoscopy April 2007 (Vol.21, supplement 13, pages 358-492).

Cephalic Vein Cut-Down Verses Percutaneous Access: A Retrospective Study Of Complications Of Implantable Venous Access Devices. LK Jablon MD, KR Ugolini MD, NC Nahmias MD Albert Einstein Healthcare Network. Philadelphia, PA. The American Journal of Surgery July 2006 (Vol. 192, Issue 1, Pages 63-67).

Single-Incision Laparoscopic Surgery: The Experience Of Our First 165 Cases: Pearls And Pitfalls. Akram M Alashari, MD, Bruce Bernstein, PhD, Stanton Smith, MD, Brian Pellini, MD, Justin Lee, MD, Ibrahim Daoud, MD, Nissin Nahmias, MD Saint Francis Hospital and Medical Center. Hartford, CT. Surgical Endoscopy Accepted for Publication.

Book chapters:

Reflux and Obesity

Laparoscopy and Obesity

Encyclopedia of Obesity

SAGE Reference

Golson Books, Ltd., Croton-on-Hudson, NY

Published by SAGE Publications, Thousand Oaks, CA.

Board Certifications

  • Surgery - American Board of Surgery

Academic Appointment

Assistant Professor, Frank H. Netter MD School of Medicine at Quinnipiac University, Clinical Associate, Department of Surgery, UConn School of Medicine

Insurance Accepted

The below is a list of all insurance plans accepted by Stamford Health Medical Group. Please be sure to confirm insurance coverage with your provider before scheduling your appointment.

If you are in need of emergency care, call 911.

The majority of the physicians on the Stamford Hospital Medical Staff are not employees or agents of the Hospital. They are independent practitioners who have been granted the privilege of using the Hospital's facilities for the care and treatment of their patients. This includes, but is not limited to, emergency department physicians, anesthesiologists, radiologists, surgeons, cardiologists, obstetricians, pathologists and other consultants who may treat patients.

Insurance listings are subject to change at any time. Please verify insurance plan acceptance when scheduling an appointment with a healthcare provider.