Dr. Joseph “Joe” Larsen, Ph.D. is a post-doctoral research fellow at the Veterans Affairs (VA) Boston Healthcare System in the Big Data Scientist Training Enhancement Program (BD-STEP) with an appointment at Harvard Medical School and the Division of Aging at Brigham and Women’s Hospital in Boston, Massachusetts. His research focuses include modeling human evolution and the progression of diseases (e.g., cancer and COVID-19) as well as his current work on the impact of multimorbidity patterns in patients with non-small cell lung cancer. His research background during his education at UCLA and USC to now his postdoctoral work at the VA Boston and Harvard Medical School has garnered him skills in mathematical modeling, statistical analyses, large database acumen, electronic health records (EHR) utilization, survival analysis, and machine learning, which he uses to study disease progression and its impact on patient outcomes and care utilization