Our Team Archive - Gastroenterology Associates of New Jersey

Kristen Polentarutti, PA

Kristen Polentarutti, PA, is a certified physician assistant at Gastroenterology Associates of New Jersey with experience in infectious disease, primary care, urgent care and occupational medicine. She is committed to providing thorough, compassionate care to patients at GANJ’s Mine Hill location.

Gunjan Kumar, PA

Gunjan Kumar, PA, is an experienced physician assistant with more than 20 years in the medical field. A member of Hackensack Digestive Disease Associates, a division of GANJ, she specializes in gastroenterology and liver disease and has extensive experience caring for patients with inflammatory bowel disease, irritable bowel syndrome, hepatitis and other GI conditions.

Kenneth Zierer, MD, Gastroenterologist, GANJ

Kenneth G. Zierer, MD

Kenneth G. Zierer, MD, is a board-certified gastroenterologist with expertise in digestive and liver health. Board certified in gastroenterology, internal medicine and pediatrics, Dr. Zierer’s clinical focus includes FibroScan®, a noninvasive technology used to assess liver health. He sees patients at GANJ’s Clifton and Rutherford locations.

Joseph Zangara, MD. Gastroenterologist, GANJ

Joseph A. Zangara, MD

Joseph A. Zangara, MD, is a gastroenterologist with North Jersey Gastroenterology, a division of Gastroenterology Associates of New Jersey. Dr. Zangara completed his medical training at UMDNJ and his residency and gastroenterology fellowship at the University of Maryland. He sees patients at GANJ’s Wayne location.

Ariy Volfson, MD

Ariy Volfson, MD, is a board-certified gastroenterologist with special expertise in inflammatory bowel disease and advanced endoscopic procedures. His clinical expertise includes colonoscopy, capsule endoscopy, upper endoscopy and other GI procedures. Dr. Volfson sees patients at GANJ’s Oakland and Woodland Park locations.

Mark Tanchel, MD

Mark Tanchel, MD, is a board-certified gastroenterologist and member of Hackensack Digestive Disease Associates, a division of Gastroenterology Associates of New Jersey. Affiliated with Hackensack University Medical Center, Dr. Tanchel has also participated in the education and training of gastroenterology fellows. He sees patients at GANJ’s Hackensack location.

Jose Ramon E. Suatengco, MD

Jose Ramon E. Suatengco, MD, is an experienced gastroenterologist and member of Ocean Family Gastroenterology, a division of Gastroenterology Associates of New Jersey. Practicing gastroenterology in Toms River for more than 25 years, Dr. Suatengco specializes in colonoscopy, endoscopy, anal manometry and capsule endoscopy.

Gastroenterologists

Gastroenterologists

Kristen Polentarutti, PA

Gunjan Kumar, PA

Kenneth G. Zierer, MD

Joseph A. Zangara, MD

Ariy Volfson, MD

Mark Tanchel, MD

Jose Ramon E. Suatengco, MD

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