Dr. Mose S. Hayes

Dr. Leone received his MD from Universidad del Salvador, Argentina in 2005. He completed his residency in Internal Medicine at University of Miami Jackson Memorial Hospital in 2011, and went on to complete fellowships in Hematology and Medical Oncology at University of Pittsburgh Medical Center in 2014. He was faculty at University of Iowa Hospitals and Clinics from 2014 through 2017. In 2017, he joined the staff of Brigham and Women's Hospital and Dana-Farber, where he is a medical oncologist and clinical investigator in the Breast Oncology Center. His research focuses on brain metastases, male breast cancer and novel therapies in the treatment of breast cancer. Dr. Leone is rated as a Distinguished provider by MediFind in the treatment of Breast Cancer in Men. His top areas of expertise are Breast Cancer in Men, Breast Cancer, Brain Tumor, and Inflammatory Breast Cancer.

Michael Hassett is an Oncologist in Boston, Massachusetts. Dr. Hassett is rated as a Distinguished provider by MediFind in the treatment of Breast Cancer in Men. His top areas of expertise are Breast Cancer in Men, Breast Cancer, Angiosarcoma, and Inflammatory Breast Cancer. Dr. Hassett is currently accepting new patients.

Dr. Tolaney is Chief of the Division of Breast Oncology at Dana-Farber Cancer Institute, and Associate Professor of Medicine at Harvard Medical School.  She is a breast medical oncologist whose research focuses on the development of novel therapies in the treatment of breast cancer.  She has been instrumental in developing several treatment approaches for breast cancer, including approaches focused on tailoring therapy for early stage HER2+ disease, use of cdk 4/6 inhibitors, antibody drug conjugates, and immunotherapy.She is a member of the National Cancer Institute Breast Cancer Steering Committee and is Vice Chair for Late-Stage Development in Breast Cancer in the Alliance for Clinical Trials in Oncology. Her research has been funded by the Breast Cancer Research Foundation and Susan G. Komen. She currently chairs multiple phase 3 trials in breast cancer and serves on several steering committees for practice-changing trials.  Her work has been published in journals such as the New England Journal of Medicine, Lancet, Lancet Oncology, Journal of Clinical Oncology, and others. She received her undergraduate degree from Princeton University in 1998 and her medical degree from UC San Francisco in 2002. She subsequently completed her residency in Internal Medicine at Johns Hopkins University, and fellowships in hematology and medical oncology at Dana-Farber Cancer Institute. She obtained a Masters in Public Health from the Harvard School of Public Health in 2007. In 2008, she joined the staff of Dana-Farber Cancer Institute and Brigham and Women's Hospital. Dr. Tolaney is rated as an Elite provider by MediFind in the treatment of Breast Cancer in Men. Her top areas of expertise are Breast Cancer, HER-2 Positive Breast Cancer, Inflammatory Breast Cancer, and Triple-Negative Breast Cancer.