GANJ – Montclair Location in Montclair
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Office in Montclair
  • Areas of Practice:
  • Gastroenterology

GANJ – Montclair Location

About Us

Gastroenterology Associates of New Jersey (GANJ) is an integrated group practice comprised of a team of highly skilled gastroenterologists. As part of our dedication to complete care, our board certified physicians and professional staff will effectively evaluate, diagnose and treat acute and chronic gastrointestinal conditions and diseases.

With locations throughout northern & central New Jersey, our multidisciplinary practice offers coordinated and comprehensive services with an emphasis on personalized care for patients of all ages and activity levels. In addition, our practice is affiliated with five ambulatory surgery centers where our advanced procedures are performed in a warm, comfortable environment on an outpatient basis.

Speaking about issues relating to one’s gut health isn’t easy. The physicians here at GANJ help put their patients at ease so that they create a treatment plan for whatever the situation.

For more information on our premier physicians, locations or services, contact us today.

Our Doctors

Rini Abraham, MD, PharmD

Dr. Rini Abraham is a gastroenterologist at Gastroenterology Associates of New Jersey. Dr. Abraham has expertise in Botox® injections for achalasia, Bravo pH monitoring, Capsule endoscopy, Colonoscopy, Esophageal dilation for achalasia and esophageal strictures, Genetic testing for colon cancer screening, High-resolution anorectal manometry, High-resolution esophageal manometry, Management of inflammatory bowel diseases, Management of liver disease, Percutaneous endoscopic gastrostomy placement, and Upper endoscopy.

Education & Training
  • Dr. Abraham completed her fellowship in gastroenterology at New York University in New York, NY as well as her residency and internship at NYP/Weill Cornell Medical Center in New York, NY.
  • In addition, she received her medical degree from University Hospital in Newark, NJ and her pharmacy degree from the Albany College of Pharmacy and Health Sciences in Albany, NY.
  • Board Certifications
  • American Board of Internal Medicine – Internal Medicine
  • American Board of Internal Medicine – Gastroenterology
  • Honors and Awards
  • Castle Connolly Top Doctor Since 2020
  • Castle Connolly Exceptional Women in Medicine 2022, 2023, 2024
  • Ori A. Rackovsky, MD

    Dr. Ori Rackovsky carries dual board certification in internal medicine and gastroenterology by the American Board of Internal Medicine. Dr. Rackovsky’s work in liver fibrosis and inflammatory bowel disease has been published in peer-reviewed journals and presented at local, national, and international conferences.

    Education & Training
  • Dr. Rackovsky earned a bachelor of arts magna cum laude from Yeshiva University in New York City.
  • He earned his medical degree, with distinction in research, from the Icahn School of Medicine at Mount Sinai in New York City.
  • During medical school, Dr. Rackovsky was the recipient of the prestigious Medical Research Fellowship from Howard Hughes Medical Institute to support his research in digestive diseases. Following medical school, he completed his residency in internal medicine at Mount Sinai, during which time he was elected to the Alpha Omega Alpha medical honor society in recognition of outstanding mentoring and clinical skills.
  • He completed his fellowship at Mount Sinai’s Dr. Henry D. Janowitz Division of Gastroenterology, where he trained with leaders in the field of inflammatory bowel diseases.
  • Board Certifications
  • American Board of Internal Medicine – Internal Medicine
  • American Board of Internal Medicine – Gastroenterology
  • Honors and Awards
  • Awarded Castle Connelly Top Doctors Award yearly since 2021
  • Joseph G. Shami, MD

    Dr. Joseph G. Shami has a clinical focus on performing high resolution esophageal manometry, pH testing and Transoral Incisionless Fundoplication or TIF.

    During his time with GANJ, Dr. Shami was also Emeritus Chief for the Division of Gastroenterology, Department of Medicine at St. Joseph’s Regional Medical Center, totaling 14 years overall in the position. He was also a clinical assistant professor at the School of Health and Medical Sciences at Seton Hall University in South Orange, NJ, for 20 years.

    Dr. Shami is fluent in English and Italian, as well as proficient in Spanish and Arabic.

    Education & Training
  • Dr. Shami completed his fellowship in gastroenterology and residency in internal medicine at St. Joseph’s Regional Medical Center.
  • He received his medical degree from the Universita Cattolica del Sacro Cuore in Rome, Italy, and earned a bachelor of science degree in biology from St. Peter’s University in Jersey City, NJ.
  • Board Certifications
  • American Board of Internal Medicine – Internal Medicine
  • American Board of Internal Medicine – Gastroenterology
  • Professional Memberships
  • American College of Gastroenterology
  • American College of Physicians
  • American Gastroenterological Association
  • American Society of Gastrointestinal Endoscopy
  • Crohn’s and Colitis Foundation of America
  • Our Services

    Serving multiple counties in northern and central New Jersey, Gastroenterology Associates of New Jersey (GANJ) utilizes the latest techniques of the industry to effectively diagnose and/or treat an array of acute and chronic gastrointestinal conditions. With a team approach and an extensive network of experienced physicians, GANJ is able to provide complete care for disorders of the digestive system for patients of all ages. All procedures are performed in the comfort of the office or in one of our advanced ambulatory surgery centers.

    Procedures we perform include:

    For more information on the procedures we perform or to schedule an appointment, contact us today.

    At Gastroenterology Associates of New Jersey, our specialized team of physicians and staff has years of combined experience providing care for acute and chronic gastrointestinal conditions. With an advanced network and a team approach, we provide an efficient diagnosis, customized treatment and preventive care plan for the individual needs of you and your family.

    Conditions we treat include:

    For more information on the conditions we treat or to schedule an appointment with one of our specialists, contact us today.

    Our Office
    Phone: 973-233-9559
    Fax: 973-233-9660
    Monday: 9:00 AM - 5:00 PM
    Tuesday: 9:00 AM - 5:00 PM
    Wednesday: 9:00 AM - 5:00 PM
    Thursday: 9:00 AM - 5:00 PM
    Friday: 9:00 AM - 5:00 PM
    Saturday: Closed
    Sunday: Closed
    Additional Contact Information

    Are you currently a patient of GANJ? Click here to access your encrypted, secure patient portal so you can access information 24/7 from the comfort and privacy of your own home or office.


    Please see below for a full list of our Accepted Insurance Plans:

    • Medicare NJ*
    • Medicaid NJ
    • Aetna PPO/HMO/Medicare
    • Amerigroup
    • Americhoice
    • Amerihealth (HMO/PPO/POS)
    • Empire BCBS
    • Beech Street / Medichoice
    • Humana
    • Cigna (HMO/PPO/POS)
    • Community Care Network
    • Consumer Health Network
    • Devon / Americare
    • Emblem Health (PPO/HMO)
    • First Health
    • Galaxy
    • GHI (PPO/HMO)
    • Healthnet
    • Horizon BCBS of NJ (PPO/HMO/Traditional)
    • Horizon NJ Health
    • Local 825
    • Local 1199 (thru Aetna)
    • Magnacare
    • Health Republic
    • Multiplan
    • “Oxford (Liberty/Freedom/Medicare)”
    • Qualcare (HMO / PPO)
    • Railroad Medicare
    • Tricare
    • “United Healthcare (HMO, PPO, POS, EPO)”
    • VNS
    • Wellcare

    *accepted by all of our doctors

    Please note: This list is not all-inclusive and some of our doctors do not participate in all of these plans. To confirm if the doctor participates, please contact your insurance company directly.