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Gregory Zanieski, MD, FACS

Assistant Professor of Surgery (Oncology)
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About

Titles

Assistant Professor of Surgery (Oncology)

Biography

Dr. Gregory Zanieski joined the Yale School of Medicine and Smilow Cancer Hospital in 2019 and cares for patients with benign or malignant breast disease. His clinical and surgical practice locations are at Smilow Cancer Hospital in New Haven and Shoreline Medical Center in Guilford. Dr. Zanieski received his Medical Degree from the State University of New York at Stony Brook School of Medicine and completed a fellowship in surgical oncology at the University of Pittsburgh Medical Center.

Prior to joining Yale, Dr. Zanieski was a breast oncology surgeon at Vassar Brothers Medical Center in Poughkeepsie, NY for nearly ten years. Dr. Zanieski is a member of the Society of Surgical Oncology, the American College of Surgeons, and the American Society of Breast Surgeons.

Last Updated on May 15, 2025.

Appointments

  • Surgical Oncology

    Assistant Professor
    Primary

Other Departments & Organizations

Education & Training

MD
State University of New York (2002)

Research

Research at a Glance

Yale Co-Authors

Frequent collaborators of Gregory Zanieski's published research.

Publications

2024

2022

2021

Clinical Care

Overview

Gregory Zanieski, MD, is a breast oncology surgeon who treats patients with benign and malignant breast diseases.

Dr. Zanieski is part of the surgical team at the Center for Breast Cancer at Smilow Cancer Hospital. He cares for patients using current breast surgical techniques, including breast conservation and immediate breast reconstruction, in collaboration with plastic surgery.

He is an assistant professor of surgery (oncology) at Yale School of Medicine. Dr. Zanieski is a member of the Society of Surgical Oncology, the American College of Surgeons, and the American Society of Breast Surgeons.

Clinical Specialties

Breast Surgical Oncology

Fact Sheets

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Board Certifications

  • Surgery General

    Certification Organization
    AB of Surgery
    Latest Certification Date
    2022
    Original Certification Date
    2008

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Contacts

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Locations

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