Faculty Directory

Diana Ceballos is an Assistant Professor in the Department of Environmental Occupational Health Sciences at the University of Washington. She received her PhD in Environmental and Occupational Hygiene from the University of Washington, and she also holds a MS in Atmospheric Chemistry from the University of Nevada-Reno and a BS in Chemical Engineering from the Universidad Pontificia Bolivariana in Medellin, Colombia. She did her postdoctoral training at the University of Washington, and subsequently became an Associate Industrial Hygienist Service Fellow and a Senior Industrial Hygienist Service Fellow at the Centers for Disease Control and Prevention, National Institute for Occupational Safety…

As clinical research director and principal research scientist at the MIT Laboratory for Computational Physiology (LCP), and as a practicing intensive care unit (ICU) physician at the Beth Israel Deaconess Medical Center (BIDMC), Leo brings together clinicians and data scientists to support research using data routinely collected in the process of care. His group built and maintains the publicly-available Medical Information Mart for Intensive Care (MIMIC) database and the Philips-MIT eICU Collaborative Research Database, with more than 20,000 users from around the world. In addition, Leo is one of the course directors for HST.936 – global health informatics to improve…

Dr. Tich Changamire, M.d., Ph.D., MBA, is the Vice President, Chief Medical Officer of CareFirst BlueCross BlueShield (CareFirst). He is responsible for leading CareFirst’s efforts to achieve excellence in healthcare affordability, quality, and accessibility through innovative initiatives to improve the health of members and communities in Maryland, the District of Columbia, and Northern Virginia.Dr. Changamire is a board-certified family physician with more than 20 years of industry experience, including medical and health plan knowledge, provider-based healthcare leadership, value-based healthcare, population health, clinical quality improvement and the business of healthcare.Before joining CareFirst, Dr. Changamire served as Chief Medical Officer and Regional…

Dr. Christiani’s major research interests are occupational, environmental and molecular epidemiology. He has been active in developing new methods for assessing health effects after exposure to pollutants and has a very active interest in international occupational and environmental health studies. In collaboration with other investigators at HSPH, he has developed new biologic markers used in examination of pollutant-induced diseases such as lung cancer, bladder cancer, skin cancer and upper respiratory-tract inflammation. For example, he has led a large multidisciplinary study of the molecular and genetic analysis of lung cancer with specific attention towards genetic susceptibility to lung cancer and genetic-environmental…

Manuel Cifuentes, ScD, MD, MPH, is a Public Health Researcher and the Senior Biostatistician in the Center for Health Policy and Research at the University of Massachusetts Medical School. Until August, 2015 he was an Associate Professor of Epidemiology and Biostatistics in the Department of Work Environment at the University of Massachusetts Lowell, where he continues advising research activities of doctoral students. He is a former scientist of the Liberty Mutual Research Institute and an Assistant Professor of the University of Concepcion Medical School in Chile. Dr. Cifuentes is a Clinical Specialist in adult psychiatry and he holds a doctoral…

Dr. Cohen is a Research Associate Professor of Medicine at the Tufts Medical Center Institute for Clinical Research and Health Policy Studies, and Deputy Director of the Center for the Evaluation of Value and Risk in Health. His research has focused on the application of simulation to assess the risks, benefits, and costs of health interventions. His work has evaluated a range of medical and public health interventions.  He is currently working on the assessment of “value frameworks” – i.e., systematic approaches – developed by various organizations to characterize the “value” and “affordability” of pharmaceuticals.  He is also working on…

Subena Colligan, M.S., CIH, CSP, is an Author, Consultant, and Executive Coach, known for her expertise in occupational health and safety. As the founder of S. Colligan Coaching and EHS Transformation Consultants, Subena empowers businesses and professionals to foster safe, compliant, and effective work environments. With her extensive experience in industrial hygiene and occupational safety she provides tailored solutions that help organizations meet regulatory standards while protecting employee well-being.A Veteran of the United States Air Force, Subena's military service laid the foundation for her leadership skills and commitment to excellence. She is also the Past-Chair/ Director for the Board for…

Renee Crichlow, MD, FAAFP, practiced full-spectrum Family Medicine with Obstetrics for more than 20 years and is now the chief medical officer of Codman Square Health Center in Boston, a Vice-chair at the Boston University Medical School Department of Family Medicine, and is she is also a Lecturer at the Harvard University Chan School of Public Health. Dr. Crichlow has lived and worked in both rural and urban environments. She and her family lived for six years in Red Lodge, Montana when Dr. Crichlow was seeing patients and teaching Family Medicine at a federally qualified community health center in Billings,…