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Mount Sinai Doctors ?
    • Specialties
    • Surgery
    • Cancer (Oncology)
    • Breast Cancer - Surgery
    • Surgical Critical Care
    • Language
    • English
    • Hospital Affiliations
    • Mount Sinai Beth Israel
    • The Mount Sinai Hospital
    • Mount Sinai Morningside and Mount Sinai West
    • New York Eye and Ear Infirmary of Mount Sinai
    • Mount Sinai Brooklyn
    • Mount Sinai Queens
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Dr. Jennifer Casher Lehman is the Associate Chief of Breast Services at Mount Sinai West and Mount Sinai St. Luke’s. She is also an Assistant Professor of Surgery at the Icahn School of Medicine at Mount Sinai.

Dr. Lehman is a double board certified breast oncologic surgeon, specializing in benign and malignant breast disease, preventative surgery/BRCA, and oncoplastic approaches to breast surgery.  Having completed specialized fellowship training in breast surgery, she has treated thousands of women - and men - with benign and malignant diseases of the breast and an increased risk for breast cancer.

Dr. Lehman received her medical degree from Stony Brook University School of Medicine after which she completed a general surgery residency at Columbia University-New York Presbyterian Hospital. During her residency research year, she completed fellowship training in surgical critical care at the Ryder Trauma Center in Miami, FL. Following surgical residency, she completed specialized fellowship training in breast surgical oncology at Memorial Sloan-Kettering Cancer Center. Prior to joining Mount Sinai, she was a faculty member of Lenox Hill Hospital of the Northwell Health System.

In addition to her clinical work, Dr. Lehman has co-authored more than 17 research presentations, abstracts, and publications. She was recently invited to the Membership Committee for the American Society for Breast Surgery and is an active member of the NY Metropolitan Breast Cancer Group, and the Society for Surgical Oncology, and a fellow of the American College of Surgeons.   


Surgical Critical Care
American Board of Surgery

Clinical Focus


MD, Stony Brook University Medical Center

Internship, General Surgery
NY Presbyterian Columbia University Medical Center

Residency, General Surgery
NY Presbyterian Columbia University Medical Center

Residency, General Surgery
NY Presbyterian Columbia University Medical Center

Fellowship, Surg./Critical Care
Jackson Memorial Hospital

Fellowship, Breast Surgery
Memorial Sloan Kettering Cancer Center