Ira. J. Bleiweiss, MD

Professor of Pathology and Laboratory Medicine at the Hospital of the University of Pennsylvania
University of Pennsylvania Perelman School of Medicine

Contact InformationHospital of the University of Pennsylvania
Founders 6
3400 Spruce St.
Philadelphia, PA 19104
Office: 215-662-2569
Fax: 215-615-0463

Specialty Division

Anatomic Pathology


BA (Biological Basis of Behavior), University of Pennsylvania, 1980
MD St. George's University School of Medicine, Grenada, West Indies, 1984

Specialty Certification

Educational Commission for Foreign Medical Graduates (ECFMG) certification, 1983
Certified in Anatomic and Clinical Pathology, The American Board of Pathology. Recertified for 10 years (voluntary program), Jan 1, 2014., 1988
Certified Laboratory Director for General Histopathology, New York State Department of Health, 2003

Postgraduate Training

Clinical clerkships, The Methodist Hospital of Brooklyn, Manhattan State Psychiatric Center, 1983-1984
Resident in Anatomic/Clinical Pathology, The Mount Sinai Medical Center, New York, 1984-1988
Chief Resident in Anatomic/Clinical Pathology, The Mount Sinai Medical Center, New York, 1987-1988
Fellow in Surgical Pathology, The Mount Sinai Medical Center, New York, 1988-1989
Fellow in Anatomic Pathology, Memorial Sloan-Kettering Cancer Center, 1989-1990

Awards and Honors

Certificate of Merit for Scientific Exhibit at the 81st Annual Meeting of the Radiological Society of North America, Chicago: for "Benign enlarging non-palpable breast masses in post menopausal women" with collaborators., 1995-1995
Certificate of Merit for Scientific Exhibit at the 96th Annual Meeting of the American Roentgen Ray Society for "Benign enlarging non-palpable breast masses in post menopausal women" with collaborators., 1996-1996
Elected by his peers for inclusion in Best Doctors in America., 1996-2007
Listed in America’s Top Doctors: New York Metro Edition, 2003-2015
Honoree, the 13th Annual Celebration of Life Gala of the Mount Sinai Breast Health Resource Program, The Waldorf Astoria, New York, NY, 2005-2005
Listed in New York’s Best Doctors, 2007-2014
Listed in Top Ten Breast Cancer Papers 2008 at annual meeting of the American Society of Breast Surgeons for "Atypical duct hyperplasia at margin of breast biopsy – Is re-excision indicated?" with collaborators., 2008-2008
Elected by his peers for inclusion in Best Doctors in America., 2009-2015
Honoree, the 7th Gala Dinner Dance of Lean on Me, The North Ritz Club, Syosset, New York, NY, 2010-2010
Listed in New York Super Doctors, 2010-2015
Honoree, the Annual Dubin Breast Center Benefit, The Mandarin Hotel, New York, NY, 2014
Recipient of the Senior Pathology Faculty Recognition Award by Residents for Exceptional Performance in Resident Education in Anatomic Pathology, 2014-2014
Newsweek’s 2015 Top Cancer Doctors, 2015-2015

Memberships and Professional Organizations

New York Pathological Society, 1990 - Present
International Academy of Pathologists, US/Canadian Division, 1990 - Present
New York Metropolitan Breast Cancer Group, 1990 - Present
The American Society of Breast Disease, 1991 - Present
Society for Applied Immuno-histochemistry, 1991 - 1994
National Cancer Institute (NCI) Clinical Trials Cooperative Group Program, 1996 - Present
State of New Jersey Commission on Cancer Research, 2000 - 2002
Cancer Family Registry for Breast Cancer Studies (CFRBCS), 2002 - Present
The New York Cancer Society, 2003 - 2009
Association of Directors of Anatomic and Surgical Pathology, 2003 - Present
Pathologists' Club of New York, 2003 - 2004
Young Survival Coalition: Young Women United against Breast Cancer, 2003 - Present
The Arthur Purdy Stout Society of Surgical Pathologists, 2003 - Present
The International Sentinel Node Society, 2006 - Present
The International Society of Breast Pathology, 2009 - Present
College of American Pathologists, 2009 - Present
Agency for Healthcare Research and Quality Effective Health Care Program, Department of Health and Human Services, 2014 - 2014

Web Links

Selected Publications

Novel Hormone Receptors Present in Apocrine Cystadenoma of the Eyelid.

Brown Sarah E, Friedman Alan H, Phelps Robert G, Bleiweiss Ira J, Wu Albert Y, Ophthalmic plastic and reconstructive surgery 33(1): e20-e21, 2017, PMID:25719370

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Iatrogenically false positive sentinel lymph nodes in breast cancer: methods of recognition and evaluation.

Nayak A, Bleiweiss I., Sem Diag Pathol, 2017

Correlation of Oncotype DX Recurrence Score with Histomorphology and Immunohistochemistry in over 500 Patients.

Hanna Matthew G, Bleiweiss Ira J, Nayak Anupma, Jaffer Shabnam, International journal of breast cancer 2017(): 1257078, 2017, PMID:28168058

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Phyllodes tumours of the breast: a consensus review.

Tan Benjamin Y, Acs Geza, Apple Sophia K, Badve Sunil, Bleiweiss Ira J, Brogi Edi, Calvo José P, Dabbs David J, Ellis Ian O, Eusebi Vincenzo, Farshid Gelareh, Fox Stephen B, Ichihara Shu, Lakhani Sunil R, Rakha Emad A, Reis-Filho Jorge S, Richardson Andrea L, Sahin Aysegul, Schmitt Fernando C, Schnitt Stuart J, Siziopikou Kalliopi P, Soares Fernando A, Tse Gary M, Vincent-Salomon Anne, Tan Puay Hoon, Histopathology 68(1): 5-21, 2016, PMID:26768026

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Changes in Pathological Complete Response Rates after Neoadjuvant Chemotherapy for Breast Carcinoma over Five Years.

McFarland Daniel C, Naikan Jessica, Rozenblit Mariya, Mandeli John, Bleiweiss Ira, Tiersten Amy, Journal of oncology 2016(): 4324863, 2016, PMID:27382369

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The clinical significance of internal mammary lymph node (IMLN) biopsy during autologous reconstruction in breast cancer patients.

Zhang X, Jaffer S, Bleiweiss IJ, Nayak A, Breast Ca Res Trt 153(3): 565-72, 2015

Histopathologic features predicting pathologic complete response in breast carcinoma treated with neoadjuvant chemotherapy.

Niakan J, Jaffer S, Nayak A, Bleiweiss IJ, Poster presentation at CAP ’15 – annual meeting of the College of American Pathologists, Nashville, TN, 2015

Change in pathological complete response (pCR) rate in patients treated with neoadjuvant chemotherapy before and after December 2013.

McFarland DC, Niakan J, Rozenblit M, Bleiweiss I, and Tiersten A, Abstract submitted to Annual Meeting of American Society of Clinical Oncology, Chicago, IL, 2015

The impact of 2013 updated ASCO/CAP guideline on the diagnosis and management of HER2 positive breast cancer: a single center retrospective study.

Zhang X, Jaffer S, Bleiweiss IJ, Nayak A, Mod Pathol 28(Suppl 2): 75A, 2015