Harlan A Nelson

Harlan A Nelson

Senior Data Scientist | Healthcare Analytics | R Practitioner

I build machine learning models that help clinicians understand patient risk. With 15+ years in healthcare data, I work at the intersection of clinical knowledge and modern analytics – turning complex EHR data into actionable insight.

Healthcare ML

Building mortality prediction models and risk stratification systems for sickle cell disease using random forests, SHAP, and external validation across health systems.

R & Tidymodels

Deep practitioner of the modern R ecosystem – tidyverse, tidymodels, targets pipelines, Quarto documents. I teach and mentor others in these tools.

Knowledge Systems

Exploring how typed knowledge graphs can organize analytical reasoning – from clinical research ontologies to this website’s own structure.

Published Researcher

Peer-reviewed work in hepatocellular carcinoma epidemiology, respiratory screening tools, and hospital quality measurement.

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