About Our Surgery Residents


Our residents come from many parts of the world and many different backgrounds. We strive to recruit residents of high academic and personal quality who, through our General Surgery Residency Program, will develop into excellent clinicians, teachers, and scholars.

Residency Leadership

Chief Administrative Residents

 Daniel Cloonan, MDDaniel Cloonan, MD

University of Nebraska Medical Center

Daniel's hometown is Omaha, Nebraska. He received his BS in Biology at the University of Nebraska and his MD, With Distinction, from the University of Nebraska Medical Center, where he was elected to AOA and received the Marjorie Merwin Simons Memorial Scholarship for leadership. Daniel served as President of the UNMC Student Senate and was the UNMC Student Regent to the University of Nebraska Board of Regents.He pursued several research projects including investigating drug metabolism of antiretroviral therapy in transgender women, medical education, and the development of the Clinical Educator Enhanced Medical Education Track. Daniel's surgical interests include pediatric surgery and thoracic surgery. He enjoys cooking, gardening, sport climbing and bouldering.


Ana Sofia Ore Carranza, MD, MPH Ana Sofia Ore Carranza, MD, MPH

Universidad de San Martin de Porres

Ana Sofia's hometown is Lima, Peru. She received her MD from San Martin de Porres University in Lima. During medical school, Ana Sofia volunteered in Zimbabwe and Kenya, preparing women's health campaigns and working on the surgical floors in community hospitals and rural clinics. After finishing medical school, Ana Sofia joined the Master of Science in Clinical Research program at the Dresden International University in Germany. After graduating she moved to Boston where she completed a research fellowship at the Pancreas and Liver Institute at BIDMC, which resulted in multiple publications focusing on large database outcomes in pancreatic surgery. During this time, Ana Sofia also received her MPH from the Harvard T.H. Chan School of Public Health with a concentration in Clinical Effectiveness and Public Health Leadership. Her surgical interest is colorectal surgery. Ana Sofia enjoys running, traveling, and finding new Peruvian restaurants.


Administrative Residents for Research

J. Christopher Polanco SantanaJ. Christopher Polanco Santana, MD, MSc, MPH

Pontificia Universidad Católica Madre y Maestra Facultad de Ciencias de la Salud

Chris' hometown is Cabarete, Dominican Republic. He received his MD from Pontificia Universidad Católica Madre y Maestra in the Dominican Republic. After medical school, Chris pursued a research fellowship with Dr. Tara Kent at BIDMC. He went on to receive a Master's of Science degree from Dresden International University in Germany and a Master's of Public Health degree from the Harvard T.H. Chan School of Public Health. As a MPH student, Chris continued to work as a research fellow with Dr. Tara Kent at BIDMC. He participated in a series of studies related to clinical and pathophysiological HPB surgery problems, as well as a project elucidating whether letters of recommendation writer characteristics, including gender, age, professorial rank, and leadership positions, predict language bias and the Provider Awareness and Cultural Dexterity Toolkit for Surgeons (PACTS) Trial. Chris' interests include kitesurfing and hiking. He is also a self-taught computer programmer since the age of 12.


Darian Hoagland, MDDarian Hoagland, MD

University of Virginia School of Medicine

Darian comes from New Jersey and graduated from the University of Maryland with a BS in Biological Sciences and Women's Studies. She received her MD from the University of Virginia School of Medicine, where she was elected to AOA. During medical school, Darian pursued several clinical research projects, was active in a number of peer mentorship programs, and served as President of the UVA Chapter of the Association of Women Surgeons. Darian's hobbies include hiking, concert-going, visiting wineries, knitting, and reading.


For more information, please contact:

Department of Surgery
Beth Israel Deaconess Medical Center
Lowry Medical Office Building
110 Francis Street, Suite 9B
Boston, MA 02215
Phone: 617-632-9236
617-632-7424
Email us