
Medical Director of The Breast Center at Montefiore Nyack Hospital
Sunny D. Mitchell, MD, a board-certified and fellowship-trained oncolplastic breast surgeon, is the Medical Director of The Breast Center at Montefiore Nyack Hospital. Dr. Mitchell has extensive experience working with high-risk breast cancer populations and provides patient-centered care with a holistic approach. She is passionate about helping her patients, from diagnosis through the entire survivorship process, which begins at the time of diagnosis, continues through treatment, and beyond.
Dr. Mitchell is a pioneer in the field of oncoplastic breast surgery and wrote the Oncoplastic Breast Conservation Surgical Atlas on performing lumpectomies via anatomically discrete incisions. She specializes in breast-conserving and nipple-sparing surgical techniques that leave a very small surgical footprint while still providing the best possible optimal medical and cosmetic results. As an expert Hidden Scar™ breast surgeon, Dr. Mitchell teaches other breast surgeons who are pursuing training for this highly skilled and advanced surgical procedure.
Dr. Mitchell received her medical doctorate from the Universidad Autonoma de Guadalajara in Guadalajara, Mexico, and New York Medical College in Valhalla, NY. She completed her general surgery residency at Stamford Hospital/Columbia University College of Physicians and Surgeons, where she was Administrative Chief Surgical Resident. She completed her breast surgery fellowship at Columbia University College of Physicians & Surgeons, New York Presbyterian Hospital.
Prior to Montefiore Nyack Hospital, Dr. Mitchell’s previous positions include Attending Breast Surgeon and Director of the Breast Clinic at Stamford Hospital in Stamford, CT; Clinical Instructor of Surgery at Columbia University College of Physicians & Surgeons; Director of Breast Surgery at White Plains Hospital in White Plains, NY; and Associate Chairperson of Surgery and Director of Women’s Health Services at Coney Island Hospital in Brooklyn, NY.
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An Extraordinarily Talented Breast Cancer Surgeon

Sheldon Marc Feldman, MD
“Dr. Sunny Mitchell is an extraordinarily talented breast cancer surgeon. She has expertise in all basic and advanced procedures including highly complex oncoplastic and reconstructive procedures. Her unique skill set provides patients with exceptional cosmetic results while eradicating the breast cancer. Additionally, her patient-centered approach provides great comfort to patients during their breast cancer journey. Communication between The Breast Cancer Program at Nyack and the Montefiore program in the Bronx is fluid, so that patients under Dr. Mitchell’s care can also receive consultative input from our National Cancer Institute (NCI) designated breast cancer team.” — Sheldon Marc Feldman, MD, Chief, Breast Surgery and Breast Surgical Oncology, and Director, Breast Cancer Services at Montefiore Health System.
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