Thomas A Ullman - Gastroenterology | Mount Sinai

Biography

Specialties

Gastroenterology

Research

Dr. Ullman's major research focus is cancer in inflammatory bowel disease. His work includes identification of the clinical risk factors for colon cancer in IBD. He has conducted studies detailing the natural history of dysplasia in ulcerative colitis, the influence of inflammation on carcinogenesis in IBD, and the relative chemopreventive effects of a number of therapies used in UC. Additionally, Dr. Ullman is pursuing research into biomarkers of disease diagnosis and activity in IBD, and the outcomes of patients with Crohn's disease and ulcerative colitis treated with cyclosporine A.

Education

MD, Weill Medical College of Cornell University

Internship, Internal Medicine, New York Presbyterian Weill-Cornell Internal Medicine

Residency, Internal Medicine, New York Presbyterian Weill-Cornell Internal Medicine

Fellowship, Gastroenterology and Hepatology, Yale University

Certifications

American Board of Internal Medicine

Office Locations

Annenberg Building Floor 5th Floor Room Room 5-207

1468 Madison Ave

New York, NY 10029

212-241-4514

Industry Relationships

Physicians and scientists on the faculty of the Icahn School of Medicine at Mount Sinai often interact with pharmaceutical, device, biotechnology companies, and other outside entities 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 outside financial relationships.

Below are financial relationships with industry reported by Dr. Ullman during 2024 and/or 2025. Please note that this information may differ from information posted on corporate sites due to timing or classification differences.

Consulting or Other Professional Services Examples include, but are not limited to, committee participation, data safety monitoring board (DSMB) membership

Guardant Health, Inc.
Johnson & Johnson
Bristol-Meyers Company
Pfizer Inc., U.S. Pharmaceuticals Group

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.

Physicians and scientists on the faculty of the Icahn School of Medicine at Mount Sinai often interact with pharmaceutical, device, biotechnology companies, and other outside entities 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 outside financial relationships.

Below are financial relationships with industry reported by Dr. Ullman during 2024 and/or 2025. Please note that this information may differ from information posted on corporate sites due to timing or classification differences.

Consulting or Other Professional Services Examples include, but are not limited to, committee participation, data safety monitoring board (DSMB) membership

Guardant Health, Inc.
Johnson & Johnson
Bristol-Meyers Company
Pfizer Inc., U.S. Pharmaceuticals Group

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.