205 Browertown Road Suite 102 Woodland Park, NJ 07424(973) 890-4780

Our Physicians

All professionals at Gastroenterology Diagnostics of Northern NJ maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in the medical field. Read on to learn more about our physician's experience and training.


Dr. Rini Abraham

Dr. Abraham is Board certified in Internal Medicine and Gastroenterology. Before she became a physician, Dr. Abraham obtained her Doctorate in Pharmacy. Dr. Abraham then when on to attend medical school at Rutgers University and The State University of New Jersey, graduating with honors.  She continued her Internal Medicine Residency at New York-Presbyterian Hospital and Weill Cornell Medical Center. Dr. Abraham completed her fellowship in Gastroenterology and Hepatology at New York University. 
Dr. Abraham joined Gastroenterology Diagnostics in 2015. She has hospital affiliations with St. Joseph’s University Medical Center in Paterson, St. Joseph’s Wayne Medical Center, Hackensack UMC Mountainside Hospital, and Chilton Medical Center.
Dr. Abraham has offices located in Wayne and Montclair. You can contact her office at 862-336-9988.
Dr. Abraham enjoys staying active with hiking, biking and swimming. She also loves spending free time with her 3 sons and husband.

 

Dr. Oren Bernheim

Dr. Bernheim is Board certified in Internal Medicine and Gastroenterology. He received his medical degree with honors from the Albert Einstein College of Medicine in Bronx, NY and earned his Bachelor of Science in Neuroscience and Behavioral Biology at Emory University in Atlanta, GA. Dr. Bernheim completed his residency in Internal Medicine at New York Presbyterian – Weill Cornell Medical Center in New York, NY, during which time he served as Assistant Chief Resident. He completed a fellowship in Gastroenterology at Mount Sinai Hospital in New York, NY and conducted extensive research for the Division of Gastroenterology at Icahn School of Medicine at Mount Sinai in New York. Dr. Bernheim joined Gastroenterology Diagnostics in 2014. He has hospital affiliations with St. Joseph’s University Medical Center located in Paterson, St. Joseph’s Wayne Medical Center, Chilton Medical Center, and Valley Hospital.

Dr. Bernheim’s office is located in Wayne. You can contact his office at 862-336-9988.
Dr. Bernheim strives to provide compassionate patient centered care. When he is not practicing medicine he loves to ski, listen to music and spend time with his family.

 

Dr. John Farkas

Dr. Farkas is Board certified by the American Board of Internal Medicine. He first received his degree in Pharmacology. He then attended medical school and received his medical degree at Ross University School for Medicine in Dominica, West Indies. Dr. Farkas completed his fellowship and residency in Gastroenterology at St. Joseph’s Hospital and Medical Center. Through the years he has held numerous prestigious positions at St. Joseph’s Hospital and Medical Center. He has also been published in multiple medical journals throughout the course of his career.
Dr. Farkas is one of the founding physicians who started Gastroenterology Diagnostics in 1994. He has hospital affiliations with St. Joseph’s University Medical Center in Paterson.
Dr. Farkas’s has an office in Clifton. You can contact his office at 973-777-5717.
Dr. Farkas is a practitioner in Hapkido, Aiki Jujitsu, and Qin Na. He believes there is always an opportunity to learn something new in the martial arts.

 

Dr. Ashok Gupta

Dr. Gupta is Board certified in Internal Medicine and Gastroenterology. He received his medical degree from Government Medical College in Patiala, India. Dr. Gupta went on to do his residency at Long Island College Hospital in New York, NY. He completed his fellowship in Gastroenterology at St. Joseph’s Hospital and Medical Center in Paterson.
Dr. Gupta is one of the founding physicians of Gastroenterology Diagnostics in 1994. He has hospital affiliations with St. Joseph’s University Medical Center in Paterson, St. Joseph’s Wayne Medical Center, and Chilton Medical Center.
Dr. Gupta has an office in Clifton and Hawthorne. You can contact his office at 973-470-0101.

Dr. Gupta is fluent in English, Hindi, Punjabi, and Urdu. Dr. Gupta enjoys traveling and has visited all 7 continents.

 

Dr. Gary Kosc

Dr. Kosc is Board certified by the American Board of Internal Medicine. He received his Bachelor of Science in Biology from St. Peter’s University in Jersey City, NJ. Dr. Kosc continued his education and earned his medical degree from Universidad Autónoma de Guadalajara A.C. in Guadalajara, Mexico. He performed his residency and fellowship in Gastroenterology at St. Joseph’s Hospital and Medical Center in Paterson.
Dr. Kosc is been in practice with Dr. Pavlou for over 25 years and is one of the founding physicians of Gastroenterology Diagnostics in 1994. He has a hospital affiliation with St. Joseph’s University Medical Center in Paterson.
Dr. Kosc has an office located in Woodland Park. You can contact his office at 973-812-8120.
Dr. Kosc provides the latest GI care to diagnosis illnesses of the stomach, small bowel, and colon by providing diagnostic procedures as well as therapeutic techniques. Dr. Kosc is fluent in English and Spanish.

 

Dr. Michael Mainero

Dr. Mainero is Board certified in Gastroenterology.  He received his medical degree from Universidad Autónoma de Guadalajara in Jalisco, Mexico and his 5th Pathway at UMDNJ. Dr. Mainero completed his residency at St. Joseph’s Hospital and Medical Center in Paterson, where he was Chief Resident. He then continued with his fellowship training at Seton Hall University, School of Graduate Medical Education. Currently, Dr. Mainero is a Chairman of the Medical Executive Committee at St. Joseph’s University Medical Center and Chief of Endoscopy at St. Joseph’s Wayne Medical Center.
Dr. Mainero is one of the founding physicians of Gastroenterology Diagnostics in 1994. He has hospital affiliations with St. Joseph’s University Medical Center in Paterson, St. Joseph’s Wayne Medical Center, Chilton Medical Center, and Hackensack UMC Mountainside Hospital.
Dr. Mainero has office locations at Woodland Park, Montclair, Wayne, Ringwood, and Lincoln Park. You can contact his office at 973-785-0102.
Dr. Mainero is fluent in English and Spanish. He enjoys playing guitar, skiing, and hanging at the Jersey Shore with his family in his free time.

 

Dr. Michael Martino

Dr. Martino is Board certified by the American Board of Internal Medicine. He earned his Master of Science degree at Rutgers University in Newark, NJ. Dr. Martino continued his education and earned a Doctor of Medicine and Surgery degree from Universita di Roma in Rome, Italy, where he graduated with honors. He completed his residency in Internal Medicine and his fellowship in Gastroenterology at St. Joseph’s Hospital and Medical Center.
Dr. Martino has 30+ years of experience and is one of the founding physicians of Gastroenterology Diagnostics in 1994. Dr. Martino has hospital affiliations with St. Joseph’s University Medical Center in Paterson, St. Joseph’s Wayne Medical Center, and Chilton Medical Center.
Dr. Martino has an office in Wayne and Woodland Park. You can contact his office at 973-837-0230.
Dr. Martino is fluent in English and Italian. He enjoys listening to music and playing golf during his free time.

 

Dr. George Pavlou

Dr. Pavlou is Board certified in Internal Medicine and Gastroenterology. He first received his Bachelor of Science degree in Biomedical Engineering from Boston University in Boston, MA. Dr. Pavlou then went on to earn his medical degree from St. George’s University. He did his Internal Medicine residency and Gastroenterology fellowship at St. Joseph’s Hospital and Medical Center.
Dr. Pavlou has 25+ years of practicing all GI disorders and is one of the founding physicians of Gastroenterology Diagnostics in 1994. He specializes in general GI, colon cancer screening, IBD, IBS, and GERD. Dr. Pavlou has hospital affiliations with St. Joseph’s University Medical Center, St. Joseph’s Wayne Medical Center, Chilton Medical Center, and HackensackUMC Mountainside.
Dr. Pavlou has offices in Woodland Park, Wayne, Oakland, and Montclair. You can contact his office at 973-812-8120.
Dr. Pavlou is fluent in English, Greek, and Spanish. He enjoys skiing in the winter and the beach in summer with friends and family.

 

Dr. Joseph Shami

Dr. Shami is Board certified in Internal Medicine and Gastroenterology. He received his Bachelor of Science in Biology from St. Peter’s University in Jersey City, NJ. Dr. Shami continued his education and earned his medical degree from the Universita Cattolica del Sacro Cuore in Rome, Italy. He completed his residency in Internal Medicine and his fellowship in Gastroenterology at St. Joseph’s Hospital and Medical Center.
Dr. Shami has been in practice 30+ years and is one of the founding physicians of Gastroenterology Diagnostics in 1994. He has hospital affiliations with St. Joseph’s University Medical Center in Paterson, St. Joseph’s Wayne Medical Center, Chilton Medical Center, and Hackensack UMC Mountainside Hospital.
Dr. Shami has offices located in Woodland Park, Montclair, and Wayne. You can contact his office at 973-812-5230.
Dr. Shami is enthusiastic as ever in looking for better ways to take care of his patients. He believes every patient is unique and gets the same attention regardless of how long their relationship has been. There is practice coverage 365 days a year.

 

Dr. Ariy Volfson

Dr. Volfson is Board certified in Internal Medicine and Gastroenterology. He received his bachelor’s degree in Health Sciences with a Biology concentration and an associate degree in Liberal Arts from the University of Hartford in West Hartford, CT. Dr. Volfson then earned his medical degree from Albany Medical College in Albany, NY. He completed his residency in Internal Medicine and a Gastroenterology fellowship through the North Shore-LIJ Health System.
Dr. Volfson joined Gastroenterology Diagnostics in 2013. He has hospital affiliations with St. Joseph’s University Medical Center in Paterson, St. Joseph’s Wayne Medical Center, Valley Hospital, Hackensack UMC Mountainside Hospital, and Chilton Medical Center.
Dr. Volfson has offices in Woodland Park and Ridgewood. He also performs the Orbera weight loss balloon procedure in Fort Lee. You can contact his office at 973-890-1303.
Dr. Volfson has special interest and expertise in inflammatory bowel disease and non-surgical weight loss options. He was born and raised in Moscow, Russia and came to America when he was a teenager. Dr. Volfson is fluent in English and Russian.

 

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