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Interventional Gastroenterology (GI)

Mount Sinai South Nassau Center for Digestive Health

Mount Sinai South Nassau Center for Digestive Health at Bellmore provides comprehensive diagnostics and treatment for a range of digestive diseases and conditions, in a safe, convenient location. Patients no longer have to visit the city for the treatment of their complicated pancreas and biliary problems, or endoscopic management of complex Interventional Gastroenterology (GI) disorders.

What is Endoscopy?

An endoscope is a small, flexible tube that can be used to diagnose and treat numerous gastrointestinal concerns. With endoscopy, doctors can diagnose conditions, clear blockages, remove cysts or stones, or remove tumors without invasive surgery. This results in less discomfort and a shorter recovery time for the patient. Endoscopic procedures can be performed on an outpatient basis, making them convenient for patients.

Conditions We Diagnose and Treat:

  • Colon Polyps and Colon Cancer
  • Other Gastrointestinal Tumors (such as cancers of the Pancreas, Esophagus, Bile Ducts, Stomach, Bowel and Liver)
  • Gastrointestinal Bleeding
  • Barrett’s Esophagus and Precancerous Lesions (such as high-and-low-grade Dysplasia)
  • GERD (Gastroesophageal Reflux Disease)
  • Pancreatic Cysts
  • Chronic Pancreatitis
  • Strictures in the Gastrointestinal Tract
  • Swallowing disorders (Eosinophilic Esophagitis, Achalasia, and other Motility Disorders)
  • Anemia and Occult Bleeding
  • Cholecystitis
  • Gastrointestinal Tract Obstruction
  • Bile Duct Obstruction
  • Pancreatic Duct Strictures and Stones
  • Gastrointestinal Tract Leaks, Fistulas, and Perforations
  • Weight Recurrence and Weight Loss Procedures

Offering the Latest Technology

Our center offers advanced procedures and uses the latest technology to diagnose and treat digestive diseases and conditions. Some of the advanced technologies we offer are:

  • The Spyglass Visualization system, which allows our physicians to view the pancreas and bile ducts with a precision never achieved before—providing more reliable diagnosis and minimally invasive treatment.
  • Endoscopic Suturing, which allows us to suture Gastrointestinal structures internally and approximate tissue without making any external cuts or incisions.
  • Endoscopic Internal Bypass, which allows us to bypass obstructed Gastrointestinal tract segments due to cancer, without making external cuts or incisions.
  • Endoscopic Gallbladder Drainage, which treats acute and chronic cholecystitis in patients who are not surgical candidates, without making external cuts or incisions.
  • The Confocal Laser Endomicroscope, which provides enhanced images of the digestive tract to detect and treat Gastrointestinal cancers at their earliest stages.
  • Radiofrequency Ablation, a technique that uses thermal energy to destroy cancerous and precancerous tissue, and is an effective treatment for Barrett’s Esophagus, bile duct tumors, pancreatic cysts, and radiation proctitis.
  • Endoscopic Submucosal Dissection (ESD) and Endoscopic Mucosal Resection (EMR), which represent major advances in treating Barrett’s Esophagus and early Gastrointestinal cancers. Endoscopists inject fluid to elevate the lesion, then cut away the surrounding tissues to remove it.
  • Cryotherapy, or tissue-freezing, a procedure that addresses a variety of lesions in the digestive tract.
  • DNA analysis of tissue samples (Fluorescent In Situ Hybridization, or FISH) which helps to evaluate strictures,or abnormal narrowing, of the bile duct.
  • Stretta and Transoral Incisionless Fundoplication (TIF) for treatment of gastroesophageal reflux disease (GERD).

Why Choose Us?

Patients have access to the latest innovations, the highest quality gastrointestinal care and a multidisciplinary team approach. Patients who choose Mount Sinai South Nassau Center for Digestive Health can expect expert physician care in a comfortable, convenient location where their diagnostic and treatment care can be addressed.

Mount Sinai South Nassau Center for Digestive Health
2750 Merrick Road
Bellmore, NY 11710
For information and appointments, call (516) 992-5626.

About the Physicians

Frank G. Gress, MD

Frank G. Gress, MD

Dr. Frank Gress is the Chief of the Division of Gastroenterology & Hepatology and Chief of Interventional Endoscopy at Mount Sinai South Nassau. He also serves as the lead for therapeutic endoscopy for Mount Sinai on Long Island, and holds an appointment as Professor of Medicine in the Division of Gastroenterology at the Icahn School of Medicine at Mount Sinai. Dr. Gress is board certified in Gastroenterology. He completed his medical degree from Mount Sinai School of Medicine in New York, NY. Dr. Gress completed residency training in Internal Medicine at Montefiore Medical Center in New York, NY. He completed two fellowships, one in Gastroenterology and Hepatology at SUNY Downstate Medical Center / The Brooklyn Hospital Center in Brooklyn, New York and another in Advanced Therapeutic Endoscopy at Indiana University Medical Center in Indianapolis, Indiana.

Prior to joining Mount Sinai South Nassau, Dr. Gress was Clinical Chief of the Division of Digestive and Liver Diseases, Chief of Endoscopy and Interventional Endoscopy and Professor of Medicine at Columbia University Medical Center in New York, NY. He was also an attending physician at New York Presbyterian Hospital in New York, NY.

Rashmi R. Advani, MD

Rashmi R. Advani, MD

Dr. Rashmi Advani is an Interventional and Bariatric Endoscopist who specializes in the endoscopic management of obesity and pancreaticobiliary diseases. Dr. Advani is the Director of Bariatric Endoscopy at Mount Sinai’s Center for Interventional Endoscopy and Assistant Professor of Medicine at the Icahn School of Medicine at Mount Sinai. Dr. Advani is triple board-certified in Gastroenterology, Obesity Medicine, and Internal Medicine. Dr. Advani obtained her medical degree at SUNY Downstate College of Medicine in Brooklyn, NY and completed internal medicine residency at Montefiore Medical Center in Bronx, NY. Dr. Advani completed general gastroenterology training at Stony Brook Hospital in NY and interventional gastroenterology at Cedars Sinai Medical Center in Los Angeles, California.

Dr. Advani is passionate about improving physical/mental wellness and creating equal access to care for her patients. She contributes to efforts that improve medical education, promote gender equity in medicine, and advance research in Gastroenterology. Her work is well-recognized and is published online and on her various social media platforms that are geared to provide easy access to evidence-based information on gastroenterological diseases. Dr. Advani also is a source for career mentorship to trainees at her local institutions and to hundreds of premedical and medical students across the country. Dr. Advani is published in peer-reviewed journals and has authored over 25 manuscripts (original, abstracts, book chapters). She serves on various committees and leadership roles for gastroenterological organizations such as American Society for Gastrointestinal Endoscopy (ASGE), Scrubs and Heels, and Women in Endoscopy (WIE).

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