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

GANJ – Hamilton 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

Shivaprasad Marulendra, MD

Dr. Shivaprasad Marulendra has served the GI health needs of the residents of Mercer County and adjoining areas since 1996. He is the cofounder of Premier GI, a division of Gastroenterology Associates of New Jersey (GANJ).

Education & Training
  • Dr. Marulendra completed his GI fellowship training at the Medical College of Virginia in Richmond, VA, in 1996.
  • Prior to that, he served as the fourth-year Chief Resident there, after completing his residency in internal medicine at Wayne State University in Detroit.
  • Dr. Marulendra earned his medical degree from Bangalore Medical College in India in 1988 before completing his internship in internal medicine from Nassau County Medical Center in Long Island, NY.
  • Board Certifications
  • Gastroenterology
  • Hospital Affiliations
  • RWJ Barnabas Hospital at Hamilton
  • Penn Medicine at Princeton
  • The Surgery Center at Hamilton
  • The Mercer County Surgery Center
  • Honors and Awards
  • He has been recognized as a “Top Doctor,” beginning in 2008 and is included among “Who’s Who” in Gastroenterology.
  • Professional Memberships
  • American Gastroenterology Association
  • American College of Gastroenterology
  • American Society of Gastrointestinal Endoscopy
  • Punitha Shivaprasad, DO

    Dr. Punitha Shivaprasad is an advanced therapeutic gastroenterologist and is the cofounder of Premier GI, a division of Gastroenterology Associates of New Jersey (GANJ). She has the distinction of starting two therapeutic endoscopy programs: one at Robert Wood Johnson (RJW) Barnabas in Hamilton, NJ, in 2015 and one at Virtua at Lourdes in Camden in 2021. She currently practices at Virtua as well as at the Premier GI offices.

    She uses advanced techniques called ERCP and Cholangioscopy to treat complex conditions and employs an innovative technique called Endoscopic Ultrasound for the early detection and staging of pancreatic, esophageal and stomach cancers. Dr. Shivaprasad is also experienced in placing metal stents into esophagus, bile ducts, and small and large intestines, and has received additional training in the drainage of fluid collection in the pancreas.

    Education & Training
  • Dr. Shivaprasad completed her three-year gastroenterology fellowship at Cooper University Hospital in Camden, where she also served her residency.
  • Dr. Shivaprasad earned her doctor of osteopathy degree from the University of New England College of Medicine in Maine with honors.
  • In addition to these studies, Dr. Shivaprasad completed a year of Advanced Therapeutic Endoscopy fellowship at Georgetown Medical Center in Washington, D.C, where she received expert training in the treatment of biliary tract disease including bile duct stones and bile duct cancers.
  • Hospital Affiliations
  • Penn Medicine at Princeton in Plainsboro, NJ
  • RWJ Barnabas in Hamilton, NJ
  • Virtua at Lourdes in Camden, NJ
  • Mercer County Surgery Center in Lawrenceville, NJ
  • Honors and Awards
  • Dr. Shivaprasad was named the Director of Advanced Therapeutic Endoscopy at RWJ Barnabas at Hamilton, NJ, where she was instrumental in setting up the institution’s first endoscopic ultrasound program. She was recognized by the staff of this department for her excellent teaching ability and was invited to give many talks, including the state level conference of the Society of Gastroenterology Nurses Association.
  • 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: 609-917-9917
    Fax: 609-570-8161
    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.