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James Orsini Jr., MD

Board Certifications: Internal Medicine and Medical Oncology

Specializations: Genitourinary Malignancies

Languages: English and Italian

Locations: Belleville, NJ and Montclair, NJ

Following in the footsteps of his father, Dr. Orsini Jr. entered the field as a physician and cancer specialist. He specializes in Genitourinary malignancies and works with a large urology group, consulting and collaborating with them on all phases of diagnosis, research and the very latest treatment options. In 2010, he was elected to be a House Staff Council member at NYU’s School of Medicine. In 2014 he became co-chief fellow at NBI. In 2016 he was elected to the Commission on Cancer at Clara Mass Medical Center. He also initiated a robust research program at New Jersey Cancer Care and has been the primary investigator on nine open trials while spearheading the ongoing expansion of the program.


Medical Education

  • St. George’s University School of Medicine, Grenada, West Indies,


  • St. Vincent’s Hospital and Medical Center, New York, NY


  • Newark Beth Israel Medical Center, Newark, N.J.


Awards and honors

awards and honors


  • American Society of Clinical Oncology (ASCO)

  • American Society of Hematology (ASH)

  • American Society of Urological Oncology

  • American College of Physicians


Mountainside Hospital, Clara Maass Hospital

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Regional Cancer Care Associates is one of fewer than 200 medical practices in the country selected to participate in the Oncology Care Model (OCM); a recent Medicare initiative aimed at improving care coordination and access to and quality of care for Medicare beneficiaries undergoing chemotherapy treatment.