Samuel J. Ballentine, MD

Assistant Professor, Pathology & Immunology

Additional Titles

  • Associate Residency Director


  • BS, Chemistry: University of Rhode Island, Kingston, RI (2008)
  • MD, New York University School of Medicine, New York, NY (2013)
  • Residency, Anatomic and Clinical Pathology: Icahn School of Medicine at Mount Sinai, New York, NY (2018)
  • Fellowship, Gastrointestinal and Liver Pathology: Icahn School of Medicine at Mount Sinai, New York, NY (2019)

Board Certifications

  • 2018 Diplomate, The American Board of Pathology, Anatomic and Clinical Pathology


  • Chief Resident, Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, NY (2016-2017)
  • Rodger C. Haggitt Gastrointestinal Pathology Society Abstract Award (2019)

Clinical Interests

  • Gastrointestinal & Pancreaticobiliary Pathology
  • Liver Pathology
  • Inflammatory Bowel Disease

Research Interests

I am interested in translational clinicopathologic research related to the field of gastrointestinal, pancreaticobiliary, and liver pathology. I have specific interest and experience in the study of idiopathic inflammatory bowel disease (Crohn’s and Ulcerative colitis) and low grade appendiceal mucinous neoplasms, though I welcome outreach for collaborative projects pertaining to all areas of gastrointestinal medicine.


Solomon D, Bekhor E, Leigh N, Maniar YM, Totin L, Hofstedt M, Aycart SN, Carr J, Ballentine S, Magge DR, Golas BJ, Pai RK, Polydorides AD, Bartlett DL, Labow DM, Choudry HA, Sarpel U. Surveillance of Low-Grade Appendiceal Mucinous Neoplasms With Peritoneal Metastases After Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy: Are 5 Years Enough? A Multisite Experience. Ann Surg Oncol. 2019 Aug 5;. doi: 10.1245/s10434-019-07678-0.
Harpaz N, Ballentine S, Colombel JF, E Sands B, Ko HM. Microscopic heterogeneity in ulcerative colitis: implications for microscopic measurement of disease activity. Gut. 2019 Feb 5;. doi: 10.1136/gutjnl-2018-318137.
Zelazny AM, Ding L, Goldberg JB, Mijares LA, Conlan S, Conville PS, Stock F, Ballentine SJ, Olivier KN, Sampaio EP, Murray PR, Holland SM. Adaptability and persistence of the emerging pathogen Bordetella petrii. PLoS One. 2013;8(6):e65102.
Zelazny AM, Ding L, Elloumi HZ, Brinster LR, Benedetti F, Czapiga M, Ulrich RL, Ballentine SJ, Goldberg JB, Sampaio EP, Holland SM. Virulence and cellular interactions of Burkholderia multivorans in chronic granulomatous disease. Infect Immun. 2009 Oct;77(10):4337-44. doi: 10.1128/IAI.00259-09. Epub 2009 Jul 27.

Billie Charlton