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Jason Abfier MD headshot
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  • Gastroenterology
Accepting new patients

Appointments: Call 973-436-1408


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75 E. Northfield Road Gastroenterology

75 E. Northfield Road
Livingston, NJ 07039
United States

Clinical Expertise

  • Abdominal pain and bloating
  • Achalasia
  • Barrett’s Esophagus and ablation of Barrett’s
  • C. difficile infection
  • Celiac disease
  • Chronic constipation
  • Chronic diarrhea
  • Colon cancer
  • Colonoscopy
  • Difficulty swallowing
  • Disorders of the Esophagus
  • Diverticulitis
  • Dyspepsia
  • Eosinophilic esophagitis
  • Esophageal motility disorders
  • Esophageal strictures
  • Family history of colon cancer and other cancers
  • Gastroesophageal reflux and heartburn
  • Gastrointestinal bleeding
  • General Gastroenterology
  • Genetic syndromes with risk of colon cancer
  • H. Pylori infection
  • Infections of the gastrointestinal tract
  • Irritable Bowel Syndrome and Other Conditions
  • Multidisciplinary treatment of colon cancer
  • Nausea and Vomiting
  • Peptic ulcer disease
  • Removal of colon polyps
  • Screening for colon polyps and prevention of cancer
  • Screening for esophageal cancer
  • Small intestinal bacterial overgrowth
  • Zenker’s Diverticulum

Accepted Insurances

Always check with your health insurance carrier before scheduling any type of service. You can learn the details of your individual health insurance plan, including the amount of your copay, deductible, and coinsurance by visiting your health insurance company's website or by calling their customer service department. Click here to review our list of accepted insurance plans.

Training and Education

Board Certification

  • Gastroenterology, American Board of Internal Medicine


  • Department of Gastroenterology and Nutrition, Memorial Sloan-Kettering Cancer Center, New York, NY


  • Department of Medicine, New York-Presbyterian Hospital - Weill Cornell Campus, New York, NY

Medical School

  • Doctor of Medicine, Cum Laude, Georgetown University School of Medicine, Washington, DC


  • Master of Science with Distinction, Georgetown University Graduate School of Arts and Sciences, Washington, DC


  • Bachelor of Arts, Cornell University College of Arts and Sciences, Ithaca, NY

About Me

Jason Abfier, MD, MS is a member of Summit Health’s Gastroenterology team, and specializes in diagnosing and treating a wide range of digestive illnesses, as well as providing counseling on GI disease and prevention. Dr. Abfier sees patients 18 years and older and is very interested in colorectal cancer screening, gastroesophageal reflux disease, Barrett’s esophagus, peptic ulcer disease, Celiac disease, IBD, diverticular disease, hepatobiliary disease and more. He is a member of the American College of Gastroenterology, American Gastroenterological Association, and American Society for Gastrointestinal Endoscopy.

His philosophy to care is through incorporating empathy and listening in his practice. “Patients need their physician to understand how they are feeling, treating them as a human being and not just a disease. I often advise patients to try to control what they can control”, says Dr. Abfier.  He believes that while genetics can’t be controlled, diet, exercise and staying current with cancer screenings are important factors in disease prevention.

With respect to his specialty, Dr. Abfier loves the combination of the cerebral aspects of gastroenterology, the physiology of the gut and the ability to directly impact disease through education and prevention.

In addition, Dr. Abfier has received the following Honors:

  • Castle Connolly Top Doctors New York Metro Area (digital guide): 2020, 2021, 2022
  • Hudson Valley Magazine Top Doctors: 2018, 2019, 2020, 2021
  • New York Magazine Top Doctors: 2021

When not practicing medicine, Dr. Abfier loves spending time with his family – skiing, hiking, traveling, watching 80’s movies and more. Additionally, he supports several causes in his community that have a common theme of tolerance, equity and acceptance.