Josh Chang
Co-Founder at The National Institutes of Health
Silver Spring, Maryland, United States
Summary
👤
Senior🎓
Top SchoolJosh Chang is an applied mathematician, research scientist, and entrepreneurial co-founder with 12 years of experience applying advanced quantitative methods to health, medicine, and AI. He leads Sound Prediction Inc and directs Mederrata Research, translating probabilistic modeling, Bayesian inference, and transparent analytics into actionable decisions that reduce medical adverse events and readmissions. His NIH roles and postdoctoral work blend mathematical modeling of physiology (e.g., aggregation processes, mitochondrial calcium regulation) with machine-learning methods—ranging from functional nonparametric techniques to neural-network representations of Bayesian posteriors implemented in TensorFlow Probability. Comfortable across Python, Stan, R and classical math, he pairs deep theory with production-oriented data science for government and clinical settings. Based in Silver Spring, MD, he has a PhD from UCLA and a track record of turning sophisticated inference and modeling ideas into usable tools for real-world biomedical problems.
12 years of coding experience
8 years of employment as a software developer
High School Diploma, High School Diploma at Gretchen Whitney High SchoolBachelor's degree, Mathematics, Bachelor's degree, Mathematics at University of California, Los Angeles
English
Github Skills (88)
probabilistic-programming10
deep-learning10
bayesian-methods10
statistics10
data-science10
probabilistic-reasoning10
bayesian10
tensorflow10
machine-learning10
representation-learning9
stan9
bayesian-data-analysis9
bayesian-inference9
bayesian-statistics9
azuread8
Programming languages (10)
Github contributions (5)
CC-RMD-EpiBio/autoencirt
May 2020 - Jan 2026
Bayesian in-model IRT factorization
Contributions:2 releases, 47 PRs, 45 pushes in 5 years 8 months
bayesian
joshchang/dfsinference
Jul 2014 - Mar 2016
Contributions:7 commits, 7 pushes, 1 comment in 1 year 8 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.