Prior to becoming Co-Director in 2014, he served as Director of Biostatistics and Epidemiology, since joining CDRG in 2000. His current professional interests include the application of multi-state models to observational epidemiologic analyses, the use of causal inference techniques such as marginal structural models, and other methods of addressing time-varying confounding when using administrative health care claims data.

Dr. Johansen's research focus is patient-oriented research among patients with chronic kidney disease (CKD) and end-stage renal disease (ESRD). In particular, she studies the pathogenesis of debility and evaluates therapeutic strategies to improve functional status in patients on dialysis, addressing these issues through several lines of investigation, including primary data collection through cohort and interventional studies and through use of national data available through the United States Renal Data System (USRDS). Mentoring is also an important focus for Dr. Johansen, and she holds a K24 to support her mentoring efforts.

She obtained her MD degree from the University of California, San Francisco, and completed her internal medicine residency at the University of Utah, then completed a fellowship and a Master of Science degree in Clinical Research, with an emphasis on epidemiology, at the University of Minnesota. Her research interests include risk prediction and the use of large data sets to create understandable tools that are useful in clinical settings at the point of care. She is also interested in mixed qualitative and quantitative methods, interdisciplinary team approaches, stakeholder engagement, and research on improving racial and gender disparities in health outcomes.

She served as a senior biostatistician for the United States Renal Data System (USRDS) and the Cardiovascular Special Studies Center of the USRDS for 14 years. She has extensive training in the fields of biostatistics and epidemiology, and broad experience in using administrative databases, applying statistical methods, and designing and conducting studies through federal and commercially funded projects. Her research interests include cancer epidemiology, the late effects of cancer therapy, in particular cardiotoxicity and nephrotoxicity of chemotherapy in cancer survivors, and comparative effectiveness research. Her experience includes cancer surveillance and care studies in the clinical areas of solid tumors, acute lymphoid leukemia, multiple myeloma, and primary immune thrombocytopenia.

She was the lead biostatistician for the National Kidney Foundation’s Kidney Early Evaluation Program (KEEP) Coordinating Center from 2000 through 2011, and served as a co-investigator in the Centers for Disease Control and Prevention’s Chronic Kidney Disease Detection Program from 2006 through 2009. Dr. Li has broad experience in health economics, health service research and policy, and biostatistics methodology. She has authored over 80 publications in peer-reviewed journals, addressing clinical outcomes and Medicare expenditures in dialysis patients, chronic kidney disease risk factors and outcomes in high-risk populations, and diabetes care and related outcomes.

He has served as an investigator and lead biostatistician at CDRG. He served as a co-investigator and lead biostatistician for the United States Renal Data System and as Senior Staff for Biostatistics for the Scientific Registry of Transplant Recipients. Dr. Liu’s research interest is in the development and application of statistical methodology in observational data analyses for surveillance and comparative effectiveness research, emphasizing disease mapping, health care profiling, patient comorbidity burden evaluation, analyses of data with complex relationships, bias correction, and clinical outcome analyses. He has authored more than 90 peer-reviewed journal articles in these related fields.

CDRG’s transplantation division currently operates the SRTR under contract with the Health Resources and Services Administration of the US Department of Health and Human Services. Dr. Snyder oversees CDRG’s research in the areas of organ, eye, and tissue donation and transplantation. His research focuses on data analytics targeted at healing and saving more lives through transplantation, with a particular focus on data used for quality monitoring and quality improvement.

She received her Doctor of Pharmacy degree from the University of Texas Health Science Center, where she also completed a fellowship in adult medicine. She served as a clinical practitioner at Hennepin County Medical Center in Minneapolis for several years where she provided medication therapy management of dialysis and chronic kidney disease (CKD) patients. Her current research interests include prevention and treatment of CKD symptoms, anemia, mineral and bone disease, and the intersection of heart failure, CKD and acute kidney injury.

His main area of interest is the epidemiologic study of patients with chronic kidney disease and end stage-renal disease, particularly those receiving maintenance dialysis. His particular focus is on the epidemiology of cardiovascular disease and mineral and bone disorders in dialysis patients. He serves as Principal Investigator for several recently undertaken studies using the electronic health records at Hennepin County Medical Center. Dr. Wetmore has authored over 80 peer-reviewed publications and several book chapters. A practicing nephrologist at HCMC seeing inpatients and outpatients, Dr. Wetmore brings real-life clinical experience to his research projects.