Updated: June 3rd, 2025

Education

04/2014-03/2020 Hamamatsu University School of Medicine, Shizuoka, Japan
Doctor of Medicine (MD)
04/2022-03/2023 St. Luke’s International University Graduate School of Public Health, Tokyo, Japan
Master of Public Health (MPH)
09/2023-05/2025 Columbia University Mailman School of Public Health, New York, NY
Master of Science (MS) in Biostatistics - Public Health Data Science Track



Work Experience

04/2020-03/2022 Full-time Resident Physician at Keio University Hospital, Tokyo, Japan
• Provide direct patient care under supervision, including history-taking, physical exams, and clinical decision-making
05/2024-12/2024 Full/Part-time Content Intern at MDCalc, New York
• Collaborate with the editorial and medical content teams to research and develop high-quality clinical decision tools used by healthcare professionals globally
10/2024-Present Part-time Research Assistant (Biostatistics) at Tokyo Medical University Gastroenterology Dept., Tokyo, Japan
• Provide biostatistics consulting for physician-led research projects, including study design, sample size estimation, data analysis, and reporting



Research Experience

Published
Evaluation of cesarean delivery risk by physician sex. Joyama Y, Hayasaka M, Robbins LS, Saade G, Kawakita T. American journal of perinatology. May 19, 2025. doi:10.1055/a-2615-5055. [link]

Associations between dietary potassium intake and urinary potassium excretion: a protocol for systematic review and meta-analysis. Morimoto N, Jamil H, Alakkari M, Joyama Y, et al. Syst Rev. 2024;13(1):185. doi:10.1186/s13643-024-02603-3. [link]

In Progress
Safety assessment of endoscopic papillectomy in older patients
• Planning and performing statistical analysis using data from electronic health record

Analysis of endoscopic techniques to prevent delayed bleeding after endoscopic papillectomy
• Designed and conducted propensity score-matched cohort analyses to assess clinical outcomes; in process of submission

Academic Projects
Investigation of menopause as a moderator in the relationship between physical activity and cognitive aging
• Collaborated with school faculty (Dr. Seonjoo Lee) to conduct data visualization and regression analyses, assessing the moderating role of menopausal status on cognitive benefits of physical activity



Skills

Data Analysis and Visualization: R, SAS, Stata, Shiny, SQL, Metabase
Computer: JavaScript, HTML, Git, Microsoft Office
Languages: Japanese (fluent), English (proficient), Chinese (conversational)