Daniel S Fierer, MD
img_Daniel S Fierer
PROFESSOR | Medicine, Infectious Diseases
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Specialties
Internal Medicine, Infectious Disease

Dr. Fierer's research interests are focused on the study of acute Hepatitis C (HCV) infection in HIV-infected patients. Hepatitis C infection is highly prevalent in HIV-infected people, but Hepatitis C is rarely diagnosed during the acute phase (first 6 months) of infection and so little is known about the early course of Hepatitis C infection. Further, people who are already HIV-infected at the time they contract HCV infection may be at particular risk of having significant liver disease: a preliminary study in collaboration with Drs. Branch and Dieterich showed the presence of moderately advanced liver damage in HIV-infected people who have acute HCV infection. Dr. Fierer has initiated a larger study to evaluate HIV-infected patients referred by their physicians for acute HCV infection to further investigate the early effects of this infection on liver pathology, on the natural history of the disease, on the effectiveness of treatment, and of the mode of transmission.

MD, Yale University School of Medicine

Residency, Internal Medicine, University of California Medical Center San Diego

Fellowship, Infectious Disease, Warren Magnuson Clinical Center/National Institute of Health

Fellowship, Infectious Disease, University of CA at San Francisco Medical Center

Fellowship, Infectious Disease, Warren Magnuson Clinical Center/National Institute of Health

Certifications

American Board of Internal Medicine

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. Fierer during 2023 and/or 2024. 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

  • Salamandra, LLC

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.