Dr. Gary J. Kosc is a gastroenterologist with Gastroenterology Associates of New Jersey (GANJ) and is board certified by both the American Board of Internal Medicine and the American Board of Gastroenterology.

Prior to his position at GANJ, Dr. Kosc was a partner at a private internal medicine practice as a gastroenterologist.

Dr. Kosc is currently on the teaching faculty at St. Joseph’s Regional Medical Center in Paterson, NJ, where he also completed his fellowship in gastroenterology and his residency in internal medicine. He was also part of an Internal Medicine internship program (the Fifth Pathway Program) at St. Joseph’s.

He received his medical degree from Universidad Autónoma de Guadalajara A.C. in Guadalajara, Mexico and his Bachelor of Science in biology from St. Peter’s University in Jersey City, NJ.

In addition, Dr. Kosc was named New Jersey Top Doc in gastroenterology in 2010.

Awarded Castle Connolly Top Doctors 2021

Meet Dr. Kosc  

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