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Ira Bleiweiss

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  • Anatomic & Clinical Pathology

Clinical Focus


  • MD, St. George's University

  • Residency, Pathology
    Mount Sinai Hospital

  • Fellowship, Surgical Pathology
    Mount Sinai Hospital

  • Fellowship, Pathology
    Memorial Sloan-Kettering


    Dr. Bleiweiss is an internationally known surgical pathologist specializing in breast pathology. He is a professor of Pathology, Chief of Surgical Pathology, and Director of the Division of Breast Pathology. He is an active participant in national clinical breast cancer trials and has led the Breast Pathology Cadre of Cancer and Leukemia Group B, one of the Cooperative Clinical Oncology Groups sponsored by the National Cancer Institute. Dr. Bleiweiss has published numerous and book chapters and is the first author of a textbook correlating radiologic and pathologic findings in breast core biopsies. He serves as a reviewer and editorial board member for several peer-reviewed journals, and has played a leadership role in many pathology and multidisciplinary breast cancer-focused societies, regionally, nationally, and internationally. He is currently President of the International Society of Breast Pathology.

    Dr. Ira Bleiweiss discusses breast biopsies in The Daily News Feature The Daily Check Up.


  • 2009 - 2015
    Best Doctors
    New York Magazine


Pathology of Sentinel Lymph Node ProceduresCorrelation of radiologic and pathologic findings; especially in core biopsies


Jing Y, Zhang J, Bleiweiss IB, Waxman S, Zelent A, Mira-Y-Lopez R . Defective expression of cellular retinol binding protein type I and retinoic acid receptors a2, b2, and g2 in human breast cancer cells. FASEB J 1996; 10: 1064-1070.

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.

Dr.Bleiweiss is not currently required to report Industry relationships.

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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Annenberg Building
1468 Madison Avenue, Room 15-26
New York, NY 10029

Tel: 212-241-7373
Fax: 212-831-4877


One Gustave Levy Place
Box 1194
New York, NY 10029

Tel: 212-241-7373
Fax: 212-831-4877
Mount Sinai Hospital Pathology Dept.

One Gustave Levy Place
Box 1194
New York, NY 10029

Tel: 212-241-9159
Fax: 212-831-4877
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Office Hours:
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  • Tuesday 8:00am - 5:00pm
  • Wednesday 8:00am - 5:00pm
  • Thursday 8:00am - 5:00pm
  • Friday 8:00am - 5:00pm
Insurance Plans
  • 1199 National Benefit Fund
  • 32B-J Building Service
  • Aetna U.S. Healthcare
  • Empire Blue Cross/Blue Shield - PPO
  • Group Health Insurance, Inc.
  • Medicaid
  • Medicare
  • MultiPlan, Inc.
  • NYLCare Health Plans of NY, Inc.
  • Oxford Health Plans
  • PHS/Healthnet/Guardian
  • Prem Preferred Care/Beechstreet
  • United Healthcare
  • Workers' Compensation