Education
Bachelor’s Degree – Queens College, Queens, NY
Medical Degree – Sackler School of Medicine, New York State/American Program, Tel Aviv, Israel
Internship – Cornell Cooperating Hospitals
- North Shore University Hospital, Manhasset, NY
- Memorial Sloan-Kettering Cancer Center, New York, NY
Residency – Cornell Cooperating Hospitals
- North Shore University Hospital, Manhasset, NY
- Memorial Sloan-Kettering Cancer Center, New York, NY
Fellowship – Mount Sinai Medical Center, New York, NY
Board Certifications –Â Internal Medicine, Gastroenterology/Hepatology
Honors & Awards
- New York Magazine: Top Doctors: 2021
- Top Doctors New York Metro Area (digital guide): 2017-2021
- Newsday – Top Doctors on Long Island: 2017-2021
- Castle Connolly Regional Top Doctors: 1st Edition
- The George M. Jaffin Department of Medicine Scholarly Activity Award, North Shore University Hospital, Manhasset, NY
Specialties & Main Areas of Interest
- Colon Cancer Screening
- Endoscopy
- Pancreatic Disease
- Biliary Disease
- Gastroesophageal Reflux Disease (GERD)
- Colonoscopy
- Liver Disease
Hospital Affiliations
- North Shore University Hospital
- St. Francis Hospital
Other Appointments
- Chair of the nutrition committee at St. Francis Hospital
- NYS PBA Police Surgeon
Fun Facts
Dr. Abittan is proud to serve on the Medical Executive Board, the Ethics Committee and Blood Utilization Committee at St. Francis Hospital. He is an active member of several professional societies including the American College of Gastroenterology, the American Gastroenterological Association, the American Association for the Study of Liver Diseases and the Crohn’s and Colitis Foundation of America. Chaim is continuously involved in peer education and gives several lectures a year on the foremost treatments for gastrointestinal ailments.
In 2010, he was appointed an honorary New York City Police Surgeon and is honored to care for law enforcement officers and their families.
In addition to being a physician, Dr. Abittan is an ordained Orthodox Rabbi who is a board member of the Sephardic Congregation of Long Beach. He lives on long island with his wife, Lisa, and their children.
Conditions Treated
- Laryngopharyngeal Reflux
- Gastrointestinal Malignancies
- Proctitis
- High Risk Colon Cancer Screening
- Anorectal Disease
- Gastritis
- Hepatocellular Carcinoma
- Peptic Ulcer Disease (PUD)
- Colon Disease
- Colon Polyps
- Hernias (Abdominal, Groin, and Hiatal)
- Liver Disease
- Chronic Diarrhea
- Crohn's and Ulcerative Colitis Management
- Gastric Cancer
- Hepatitis B
- Achalasia
- Iron Deficiency Anemia
- Bacteria and Foodborne Illness
- Crohn’s and Ulcerative Colitis
- Hepatitis A
- Lactose Intolerance
- Gas
- Genetic Colon Cancer Syndromes
- Silent Reflux
- Ulcerative Colitis
- Bile Duct Blockages and Stones
- Rectal Cancer
- Liver Cirrhosis
- Colorectal Cancer
- Hemochromatosis
- H. Pylori and Peptic Ulcer
- Stomach Ulcers
- Gallbladder Disease
- Difficulty Swallowing (Dysphagia)
- Esophagitis and Stricture
- Acid Reflux
- Primary Biliary Cirrhosis
- Nonalcoholic Steatohepatitis (NASH)
- Abdominal Pain
- Barrett's Esophagus
- Celiac Disease
- Clostridioides Difficile
- Colon Cancer
- Constipation
- Diarrhea
- Diverticulosis/Diverticulitis
- Esophageal Cancer
- Reflux Esophagitis/Stricture
- Fatty Liver
- Fecal Incontinence
- Gallstones
- Gastroparesis
- GERD
- Heartburn
- Helicobacter Pylori/Peptic Ulcer
- Hemorrhoids
- Hepatitis C
- Inflammatory Bowel Disease, Including Crohn’s Disease and Ulcerative Colitis
- Irritable Bowel Syndrome
- Jaundice
- Nausea and Vomiting
- Obesity
- Pancreatic Cancer
- Pancreatic Cysts
- Pancreatitis
- Rectal Bleeding
- Swallowing Difficulty
Procedures Performed
- Polypectomy
- Capsule Endoscopy
- Percutaneous Endoscopic Gastrostomy (PEG)
- Upper Endoscopy
- Fecal Transplant
- Lactose Intolerance Breath Test
- Diagnostic and Therapeutic Colonoscopy
- Diagnostic and Therapeutic Endoscopy
- Lactose Tolerance Test
- Flexible Sigmoidoscopy and IRC
- Remicade Infusion
- Upper GI Endoscopy (EGD)
- Barrett’s Treatment
- Breath Testing, including Lactose, Lactulose, Fructose Testing
- Urea Breath Test (UBT)
- Bravo pH Study
- Colonoscopy
- Flexible Sigmoidoscopy
- Esophageal Dilation/Testing
- Variceal Banding
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