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James Marion

  • PROFESSOR Medicine, Gastroenterology
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  • Gastroenterology


  • MD, Columbia Univ. Col. of Phy. & Surg.

  • Residency, Internal Medicine
    Columbia-Presbyterian Medical Ctr.

  • Residency, Internal Medicine
    Columbia-Presbyterian Medical Center

  • Fellowship, Gastroenterology
    Mount Sinai Hospital

Industry Relationships

Physicians and scientists on the faculty of the Icahn School of Medicine at Mount Sinai often interact with pharmaceutical, device and biotechnology companies to improve patient care, develop new therapies and achieve scientific breakthroughs. In order to promote an ethical and transparent environment for conducting research, providing clinical care and teaching, Mount Sinai requires that salaried faculty inform the School of their relationships with such companies.

Below are financial relationships with industry reported by Dr. Marion during 2014 and/or 2015. Please note that this information may differ from information posted on corporate sites due to timing or classification differences.

Scientific Advisory Board:

  • Janssen Pharmaceuticals, Inc.

Industry-Sponsored Lectures: MSSM faculty occasionally give lectures at events sponsored by industry, but only if the events are free of any marketing purpose.

  • AbbVie Inc.

Mount Sinai's faculty policies relating to faculty collaboration with industry are posted on our website. Patients may wish to ask their physician about the activities they perform for companies.

Insurance Information

Physicians who provide services at hospitals and facilities in the Mount Sinai Health System might not participate in the same health plans as those Mount Sinai hospitals and facilities (even if the physicians are employed or contracted by those hospitals or facilities).

Information regarding insurance participation and billing by this physician may be found on this page, and can also be obtained by contacting this provider directly. Because physicians insurance participation can change, the insurance information on this page may not always be up-to-date. Please contact this physician directly to obtain the most up-to-date insurance information.

Insurance and health plan networks that the various Mount Sinai Health System hospitals and facilities participate in can be found on the Mount Sinai Health System website.

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Feinstein IBD Clinical Center

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