Dr. Nissin Nahmias, MD

Dr. Nissin Nahmias, MD

Bariatric Surgery  ·  
Dr. Nissin Nahmias, MD is a bariatric surgery specialist in Stamford, CT and has been practicing for 9 years. He graduated from Anahuac University / School of Medicine in 2000 and specializes in bariatric surgery, bariatric medicine, and more.Read his story

32 Strawberry Hill Ct # 3

Stamford, CT 06902

Contact Information

Insurance Accepted

  • Aetna
  • Anthem
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Louisiana
  • Blue Cross Blue Shield of Massachusetts
  • Cigna
  • Commercial Insurance Company
  • Connecticare
  • Empire Blue Cross Blue Shield
  • 8 More

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Learn about Dr. Nahmias

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you.

Top Care Areas

See how frequently Dr. Nahmias performs your care needs compared to other doctors.

very high
more than 99% of peers
Esophageal Surgery
more than 72% of peers
Stomach Surgery
more than 41% of peers

Dr. Nahmias's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

Dr. Nahmias' bio

This content was provided by Dr. Nahmias "Dr. Nahmias has participated in and performed over 900 bariatric procedures while in training and as an attending physician; in addition he has managed many more complex bariatric patients before and after surgery. He maintains some of the lowest complication rates and some of the highest patient satisfaction rates in the country. Dr. Nahmias was born and raised in Mexico City; he attended the Anahuac University School of Medicine and graduated at the top of his class with a full scholarship for academic achievement. Dr. Nahmias interest in bariatric surgery began during his general surgery residency in Philadelphia, Pennsylvania, when he worked under the instruction of Ramsey Dallal, M.D., An experienced bariatric surgeon that has participated in more than 3000 bariatric procedures. After residency, he dedicated a year of his life to learn the techniques of bariatric surgery from some of the nation's pioneers of academic bariatric surgery, Dr. James W. Maher and Dr. John M. Kellum; completing a fellowship in laparoscopic and bariatric surgery at the prestigious Virginia Commonwealth University/Medical College of Virginia in Richmond, Virginia. One of the country's leading institutions in the development of the field of bariatric surgery. Dr. Nahmias has practiced bariatric surgery in the greater Hartford area since 2009. The American Society of Metabolic and Bariatric Surgery designated him a "Bariatric Surgeon of Excellence". He is a Diplomat of the American Board of Surgery, a Fellow of the American College of Surgeons and of the American Society for Metabolic and Bariatric Surgery. Dr. Nahmias is a member of the Society of American Gastrointestinal and Endoscopic Surgeons, the Society of Laparoendoscopic Surgeons, the Connecticut Chapter of the American College of Surgeons and the International Federation for the Surgery of Obesity and Metabolic Disorders. About Me, Practice Philosophy: I am committed to providing compassionate, comprehensive and personalized patient care. I treat people who wish to lose weight primarily through the use of advanced, minimally invasive, surgical therapies. Patients who are suitable surgical candidates benefit greatly from these therapies, as well as from a healthy lifestyle that includes good nutritional habits and exercise. Areas of Focus and Interests: I offer expertise in all aspects of obesity management inclusive of medical management, surgery for obesity including laparoscopic gastric bypass and single incision "no scar" gastric banding, sleeve gastrectomy and when indicated revision procedures. General Comments: My surgical services are performed with a respectful, warm, personal manner in state-of-the-art, modern facilities. Advanced surgical techniques result in minimal discomfort, expedient recovery time, and excellent outcomes."
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Care Philosophy

This content was provided by Dr. Nahmias "I am committed to providing compassionate, comprehensive and personalized patient care. I treat people who wish to lose weight primarily through the use of Advanced, Minimally Invasive, Surgical and Non- Surgical therapies. Patients who are suitable surgical candidates benefit greatly from these therapies, as well as from a healthy lifestyle that includes good nutritional habits and exercise. As a physician specializing in bariatric surgery, I have seen first-hand the tremendous benefits experienced by individuals who lose weight and make positive lifestyle changes. My surgical services are performed with a respectful, warm, personal manner in state-of-the-art, modern facilities. Advanced surgical techniques result in minimal discomfort, expedient recovery time, and excellent outcomes."
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5  Specialties

  • Bariatric Surgery
  • Bariatric Medicine
  • General Surgery
  • Nutrition
  • Therapy Endoscopy

1  Board Certifications

  • General Surgery
    Accredited by: American Board of Surgery*

109  Conditions Treated

  • Abdominal Disorders
  • Abdominal Hernia
  • Abdominal Injuries
  • Abdominal Muscle Strain
  • Abdominal Pain
  • Achalasia
  • Acid Reflux
  • Acute Abdominal Syndrome
  • Acute Appendicitis
  • Acute Cholecystitis
  • Acute Gastritis
  • Adenocarcinoid Tumor
  • Adenoma
  • Adenopathy
  • Adrenal Cortex Diseases
  • Adrenal Incidentaloma
  • Adrenal Tumor
  • Adult Development Disorders
  • Anemia
  • Appendicitis
  • Appendix Disorders
  • Back Pain
  • Bacterial Infections of the Digestive Tract
  • Barrett's Esophagus
  • Benign Biliary Disease
  • Benign Diseases of the Bile Ducts
  • Benign Diseases of the Gallbladder
  • Benign Diseases of the Pancreas
  • Benign Peptic Ulcer
  • Benign Tumor
  • Bile Duct Disorders
  • Bile Duct Obstruction
  • Bile Plug
  • Biliary Colic
  • Biliary Disorders
  • Biliary Dyskinesia
  • Blind Loop Syndrome
  • Boerhaave's Syndrome
  • Bowel Bypass Syndrome
  • Bowel Strangulation
  • Cholangitis
  • Cholecystitis and Gallstones
  • Cholestasis
  • Chronic Appendicitis
  • Chronic Constipation
  • Chronic Diarrhea
  • Chronic Digestive Disorders
  • Chronic Diseases
  • Chronic Erosive Gastritis
  • Chronic Infections
  • Chronic Non-Ulcer Dyspepsia
  • Chronic Osmotic Diarrhea
  • Chronic Recurrent Abdominal Pain
  • Chronic Secretory Diarrhea
  • Chronic Steatorrheal Diarrhea
  • Colic
  • Colitis
  • Congenital Short Bowel
  • Constipation
  • Crohn's Disease
  • Cushing's Disease
  • Cushing's Syndrome
  • Dilatation
  • Esophageal Achalasia and Cardiospasm
  • Esophageal Dilation
  • Esophageal Diseases
  • Esophageal Motility Disorders
  • Esophageal Varices
  • Extrahepatic Bile Duct Cancer
  • Gastrointestinal Diseases
  • Gastrointestinal Malabsorption
  • Halitosis
  • Helicobacter Pylori Gastrointestinal Tract Infection
  • Hematemesis
  • Hematochezia
  • Hemorrhage
  • Hernia
  • Hiatal Hernia
  • Hypercoagulable State
  • Inflammatory Bowel Disease
  • Intestinal Obstruction
  • Irritable Bowel Syndrome
  • Irritable Bowel Syndrome Characterized by Constipation
  • Malignant Peptic Ulcer
  • Mallory-Weiss Syndrome
  • Malnutrition
  • Meckel's Diverticulum
  • Metabolic Disorders
  • Metabolic Syndrome
  • Obesity
  • Obesity Associated Asthma
  • Obesity Due to Congenital Leptin Deficiency
  • Obesity Hypoventilation Syndrome
  • Osteoporosis
  • Overweight
  • Pancreatic Disease
  • Parathyroid (Gland) Disease
  • Peptic Ulcer
  • Primary Hypercoagulable State (incl. Factor V Leiden Disease)
  • Stomach Diseases
  • Thiamine Deficiency
  • Thrombosis
  • Toxic Shock Syndrome
  • Tumor
  • Ulcer
  • Urinary Disorders
  • Uterine Diseases
  • Varicose Veins
  • Weight Loss
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118  Procedures

  • Abdominal Surgery
  • Abdominoplasty
  • Abscess or Fluid Incision and Drainage
  • Acid Reflux Surgery
  • Adhesiolysis
  • Adjustable Gastric Banding
  • Adrenalectomy
  • Advanced Laparoscopic Surgery
  • Appendectomy
  • Bariatric Surgery (Weight Loss Surgery)
  • Body Contouring (After Weight Loss Surgery)
  • Bowel Resection
  • Bowel Surgery
  • Bypass Surgery
  • Colectomy
  • Colon Surgery
  • Cosmetic Surgical Procedure
  • Diagnostic Endoscopy
  • Diet Counseling
  • Duodenal Surgery
  • Duodenoscopy
  • Endoscopic Zenker's Diverticulum Surgery
  • Endoscopy
  • Endoscopy (Esophagus, Stomach, Small Intestine)
  • Esophageal Stenting
  • Esophageal Surgery
  • Esophagogastroscopy
  • Esophagoscopy
  • Excision of Skin Lesion
  • Exercise Counseling
  • Exploratory Surgery
  • Fistulogram
  • Flexible Sigmoidoscopy
  • Foregut Surgery
  • Foreign Body Removal
  • Gallbladder Removal
  • Gallbladder Removal (Cholecystectomy), Laparoscopic
  • Gallbladder Surgery
  • Gastrectomy
  • Gastric Banding, Laparoscopic
  • Gastric Bypass Surgery
  • Gastric Bypass Surgery, Laparoscopic
  • Gastric Restrictive With Partial Gastrectomy or Jejunojejunostomy
  • Gastric Sleeve Surgery
  • Gastric Tube Insertion
  • Gastrointestinal Surgery
  • Gastrointestinal Surgery, Laproscopic
  • Gastroparesis Therapy
  • Gastrotomy
  • Hernia and Hydrocele Repair
  • Hernia Repair
  • Inguinal Hernia Repair, Laparoscopic
  • Inguinal Hernia Surgery
  • Intestinal Biopsy
  • Laceration Repair
  • Laparoscopic Abdominal Surgery
  • Laparoscopic Adrenalectomy
  • Laparoscopic Anti-Reflux Surgery
  • Laparoscopic Bariatric Surgery
  • Laparoscopic Colectomy
  • Laparoscopic Colon Surgery
  • Laparoscopic Endocrine Surgery
  • Laparoscopic Rectal Surgery
  • Laparoscopic Revision Gastric Restrictive Procedure
  • Laparoscopic Splenectomy
  • Laparoscopic Surgical Procedure
  • Laparoscopy
  • Liver Biopsy
  • Lumpectomy
  • Lymph Node Biopsy or Excision
  • Lymph Node Resection
  • Mini Tummy Tuck
  • Minimal Access Surgery
  • Minimally Invasive Surgery
  • Mole Removal
  • Muscle Biopsy
  • Myocutaneous Flaps
  • Open Gastric Restrictive Procedure
  • Pancreatic Surgery
  • Parathyroid Surgery
  • Parathyroidectomy
  • Parenteral Nutrition
  • Percutaneous Edoscopic Gastrostomy (PEG)
  • Percutaneous Procedures
  • Percutaneous Tracheostomy
  • Physical Examination
  • Pneumatic Dilations (PD)
  • Polypectomy
  • Post-Operative Care
  • Pre-Operative Care
  • Re-Operative Surgery
  • Revision of Gastric Anastomosis or Restrictive Procedure
  • Revision Surgery
  • Rigid Sigmoidoscopy
  • Sigmoidoscopy
  • Skin Biopsy
  • Skin Grafts
  • Skin Surgery
  • Sleeve Gastrectomy
  • Small Bowel Enteroscopy
  • Small Bowel Surgery
  • Snare Polypectomy
  • Soft Tissue Injections
  • Soft Tissue Surgery
  • Splenectomy
  • Stomach Surgery
  • Surgical Procedures
  • Suture Soft Tissue Wound
  • Suture Uncomplicated Lacerations
  • Temporal Artery Biopsy
  • Therapeutic Endoscopy
  • Tube Feeding
  • Tumor Resection
  • Tumor Surgery
  • Upper GI Series
  • Variceal Hemostatis
  • Venous Sclerotherapy
  • Wound Care and Management
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Background Check

0 Malpractice Claims

No malpractice history found for Connecticut.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • Anahuac University / School of Medicine
    Undergraduate School | Graduated 1995
  • Anahuac University / School of Medicine
    Medical School | Graduated 2000
  • Albert Einstein Medical Center
    Internship Hospital | Completed 2003
  • Albert Einstein Medical Center
    Residency Hospital | Completed 2008
  • Virginia Commonwealth University / Medical College of Virginia School of Medicine
    Fellowship Hospital | Completed 2009
  • Albert Einstein Medical Center Chief Resident 2007-2008
    Other Education | Completed 2008

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
  • Patient's Choice Award 2010, 8/10/2010
Media & Publications
  • Encyclopedia of Obesity Book chapters: Reflux and Obesity Laparoscopy and Obesity,
  • Management of Ventral Hernias at the Time of Gastric Bypass, 03/2008
  • Cephalic Vein Cut-Down Verses Percutaneous Access: a Retrospective Study of Complications of Implantable Venous Access Devices, July 2006
  • Drain Amylase Levels Are an Adjunct in Detection of Gastrojejunostomy Leaks after Roux-en-Y Gastric Bypass, May 2009
  • Back to Basics -Clinical diagnosis in Bariatric Surgery. Routine Drains and UGI series are unnecessary, April 2007
  • Practice website,

Languages Spoken

  • English
  • Spanish

Memberships & Professional Affiliations

Dr. Nahmias does not have any memberships or affiliations listed. If you are Dr. Nahmias and would like to add memberships or affiliations, please update your profile.

Dr. Nahmias' Reviews

Likelihood of recommending Dr. Nahmias to family and friends
27 total reviews (6 have comments)

Likelihood to Recommend (27)

  • 5
  • 4
  • 3
  • 2
  • 1

Dr. Nahmias' Performance

  • Trustworthiness

  • Explains condition(s) well

  • Answers questions

  • Time well spent


Office & Staff Performance

  • Scheduling

  • Office environment

  • Staff friendliness

  • Average wait time

    10 to 15 minutes

Patient Comments (6)

Dr. Nahmias has been such a great support to me during my weight loss journey. He truly has demonstrated superb professionalism and exceptional patient care to me before, during, and after my surgery. His investment and commitment to patient care is to be commended!
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He did my gallbladder surgery for my Bariatric sleeve. Amazing job. I can tell that he really genuinely cares for me as a patient. Goes the extra mile to make sure he is efficient as a surgeon.
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very good doctor he is excellent
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Wonderful & easy going. Made me feel comfortable on my fitst visit. He pays very much attention to every detail and he's honest. Hard finding a great dr who spends time with his patients vs rushing through each visit. Love this dr.
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On Christmas eve 2015 I was brought to the emergency room with stomach pain and bleeding. Dr. Nahmias was called and he responded immediately even though he was not the Dr. who did my lap band surgery 9 years ago. Dr. Nahmias took the time to explain in details what was causing all this symptoms....more
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